34:["$","title",null,{"children":"What the ... JS Pt. 3 | Jing D | Observable"}] 3c:T552,md`
### Static Properties & Methods | Property | Return Type | Description | Usage | | --- | --- | --- | --- | | Symbol.asyncIterator | method | object's default AsyncIterator | await...of | | Symbol.hasInstance | method | if a constructor recognizes the argument as its instance | instanceof | | Symbol.isConcatSpreadable | Boolean | if an object should be flattened to its array elements | Array.prototype.concat() | | Symbol.iterator | method | default iterator for an object | for...of | | Symbol.match | method | matches against a string, also to determine if an object may be used as a regex | String.prototype.match() | | Symbol.matchAll | method | returns an iterator, that yields matches of the regex against a string | String.prototype.matchAll() | | Symbol.replace | method | replaces matched substrings of a string | String.prototype.replace() | | Symbol.search | method | the index within a string that matches the regex | String.prototype.search() | | Symbol.species | constructor function | used to create derived objects | | | Symbol.toPrimitive | method | converting an object to a primitive value | | | Symbol.toStringTag | string | the default description of an object | Object.prototype.toString() | | Symbol.unscopables | object | property names that are excluded from the environment bindings of the associated object | | `3d:T433,md`
## Math *Math works with the Number type. It doesn't work with BigInt* All properties and methods of Math are static! | | -5.05| 0.59 | null | undefined| | | --- | --- | --- | --- | --- | --- | |Math.floor(x) | -6 | 0 | 0 | NaN | | |Math.ceil(x) | -5 | 1 | 0 | NaN | | |Math.round(x) | -5 | 1 | 0 | NaN | rounded to the nearest int | |Math.trunc(x) | -5 | 0| 0 | NaN | integer part by removing decimals | |Math.fround(x) | -5.050..| 0.589.. | 0 | NaN | nearest 32-bit single precision float | - Math.random() - Math.abs(x) - Math.max([x[, y[, …]]]), Math.min([x[, y[, …]]]) - Math.pow(x, y) - Math.sign(x) - Math.sqrt(x), Math.cbrt(x) - Math.clz32(x) - Math.exp(x), Math.expm1(x) - Math.imul(x, y) - Math.log(x), Math.log1p(x), Math.log10(x), Math.log2(x) - Math.hypot([x[, y[, …]]]) | Trignometric | hyperbolic #ES2015 | | --- | --- | | Math.cos(x)| Math.cosh(x) | | Math.sin(x)| Math.sinh(x) | | Math.tan(x)| Math.tanh(x) | | Math.asin(x)| Math.asinh(x) | | Math.acos(x)| Math.acosh(x) | | Math.atan(x)| Math.atanh(x) | | Math.atan2(y, x)| | `3e:T63b,md`
### Date Parts | getter | setter | UTC getter | UTC setter | | --- | --- | --- | --- | |getFullYear() |setFullYear() |getUTCFullYear() |setUTCFullYear() | |getYear()| setYear() | | | |getMonth() |setMonth() |getUTCMonth() | setUTCMonth() | |getDate()| setDate()|getUTCDate() |setUTCDate()| |getDay() | |getUTCDay() | | |getTime() |setTime() | | | |getHours() |setHours() |getUTCHours() | setUTCHours() | |getMinutes() |setMinutes() |getUTCMinutes() | setUTCMinutes() | |getSeconds() |setSeconds() |getUTCSeconds() | setUTCSeconds() | |getMilliseconds() |setMilliseconds() |getUTCMilliseconds() | setUTCMilliseconds() | |getTimezoneOffset() | | | |
### Printing Dates | method | description | output | | --- | --- | --- | | toDateString() | "date" portion of the Date | "Mon Jun 08 2020" | | toISOString() | ISO 8601 Extended Format | "2020-06-08T19:10:00.000Z" | | toJSON() | used by JSON.stringify() | "2020-06-08T19:10:00.000Z" | | toGMTString() | deprecated. Use toUTCString() instead | | | toUTCString() | string using the UTC timezone | "Mon, 08 Jun 2020 19:10:00 GMT" | | toLocaleDateString() | based on system settings | "6/8/2020" | | toLocaleFormat() | deprecated | | | toLocaleString() | Overrides Object.prototype.toLocaleString() | "6/8/2020, 3:10:00 PM" | | toLocaleTimeString() | locality-sensitive representation of the time | "3:10:00 PM" | | toTimeString() | "time" portion in system locale | "15:10:00 GMT-0400 (Eastern Daylight Time)" | | toString() | | "Mon Jun 08 2020 15:10:00 GMT-0400 (Eastern Daylight Time)" | | valueOf() | | 1591643400000 |`3f:[] 38:{"id":"5020a81d2163ba37","slug":"what-the-js-pt-3","title":"What the ... JS Pt. 3","thumbnail":"ebe68933ff14ce057007aa55e3f1dba5be0e092b1d30909023989bd18beabdab","access_level":"public","create_time":"$D2020-08-17T21:23:44.020Z","update_time":"$D2020-09-01T03:24:23.938Z","view_time":null,"first_public_time":"$D2020-08-17T21:46:34.293Z","has_unpublished_edits":null,"fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"d10f468021cb6169","login":"mystiquepanda","name":"Jing D","avatar_url":"https://avatars-next.observableusercontent.com/4cf5309591931daa3113ac391031aae6cd78ac18089619fd39c4a77f8eefd07e","tier":"starter_2024","bio":"","followed_by_you":false,"follows_you":false},"version":268,"publish_version":268,"role":null,"authored":false,"authors":[{"type":"individual","id":"41f898cb9b136929","login":"mystiquepanda","name":"Jing D","avatar_url":"https://avatars-next.observableusercontent.com/4cf5309591931daa3113ac391031aae6cd78ac18089619fd39c4a77f8eefd07e","tier":null,"bio":"","followed_by_you":false,"follows_you":false}],"members":[{"type":"individual","id":"41f898cb9b136929","login":"mystiquepanda","name":"Jing D","avatar_url":"https://avatars-next.observableusercontent.com/4cf5309591931daa3113ac391031aae6cd78ac18089619fd39c4a77f8eefd07e","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":{"id":"bd861e327ed5fcab","slug":"what-the-js","title":"What the ... JS","owner":{"id":"d10f468021cb6169","login":"mystiquepanda","name":"Jing D"}},"type":"notebook","body":{"titling":"auto","title":"What the ... JS Pt. 3","cells":[{"id":0,"value":"md`# What the ... JS Pt. 3\n**[ Fundamental Objects ]**`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":10,"value":"toc({selector: \"h2,h3,h4,h5,h6\", heading: \"Table of Contents\"});","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":15,"value":"md`\n

\n## Symbol\n\"primitive data type\"\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":18,"value":"u = new Symbol('unique')\n//Factory pattern, not a constructor","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":20,"value":"Symbol('unique') === Symbol('unique')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":22,"value":"Symbol.for('common') === Symbol.for('common')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":26,"value":"JSON.stringify({[Symbol('foo')]: 'foo'})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":28,"value":"{\n let sym = Symbol('random')\n let obj = {[sym]: false}\n return [obj[sym],obj[Object(sym)]]\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":29,"value":"$3c","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":31,"value":"Symbol.keyFor(Symbol.for('common'))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":33,"value":"md`\n
\n### Instance Properties & Methods`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":35,"value":"Symbol.for('unique').description","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":38,"value":"Object.getPrototypeOf(Symbol.for('unique'))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":40,"value":"md`\n

\n## Boolean\nprimitive Boolean true & false !== true & false of Boolean object\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":42,"value":"{\n // Any object that is not undefined or null\n let x = new Boolean(false);\n if (x) {\n return \"fake truth\";\n }\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":45,"value":"[Boolean(0), Boolean(-0), Boolean(null), Boolean(false), Boolean(NaN), Boolean(undefined), Boolean('')]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":47,"value":"[Boolean(true), Boolean('true'), Boolean('false'), Boolean('random'), Boolean([]), Boolean({})]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"md`\n

\n## Error objects\n\n- Error\n- AggregateError \n- EvalError\n- InternalError \n- RangeError\n- ReferenceError\n- SyntaxError\n- TypeError\n- URIError\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":52,"value":"md`\n

\n## Number`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":54,"value":"123 === 123.0 ","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":55,"value":"Number(254).toString(16)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":58,"value":"Number(-0xff).toString(2)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":60,"value":"// locale and the fallback language\nNumber(12345.6789).toLocaleString(['ban', 'id'])","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":62,"value":"// locale and number type\nNumber(12345.6789).toLocaleString('de-DE', { style: 'currency', currency: 'EUR' })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":64,"value":"// local locale and config\nNumber(12345.6789).toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":206,"value":"[0xF,0b1111,0o17,Number('0b1111')]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":209,"value":"[Number.parseInt('111', 2),Number.parseInt('111', 8)]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":66,"value":"md`\n| caller| args | toFixed() | toPrecision() |\n| --- | --- | --- | --- |\n|Number(3.14159)| none | \"3\" | \"3.14159\" |\n|Number(3.14159)| 0 | \"3\" | RangeError |\n|Number(3.14159)| 4 | \"3.1416\" | \"3.142\" |\n|Number(3.14159)| 7 | \"3.1415900\" | \"3.141590\" |\n|Number(3.14159)| 101 | RangeError | RangeError |\n|Number(100) | 1 | \"100.0\" | \"1e+2\" |\n|Number(100) | 3 | \"100.000\"| \"100\" |\n|Number(2.35) | 1 | \"2.4\" | \"2\" |\n|*Number(2.55)* | 1 | \"2.5\" | \"3\" |\n|Number(-2.35) | 1 |\"-2.4\"| \"-2\" |\n|-2.35 | 1| -2.4 | -2 | \n\n*Floating point precision issue*\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":213,"value":"0.1 + 0.2 === 0.3","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":217,"value":"Number.MAX_SAFE_INTEGER","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":219,"value":"Number.MIN_SAFE_INTEGER","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":221,"value":"Number.isSafeInteger(Number.MIN_SAFE_INTEGER-1)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":68,"value":"md`\n

\n## BigInt\n#ES2020 #ES10\n
max value -> 2^25 - 1\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":70,"value":"1n+1n*10","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":72,"value":"5n / 2n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":74,"value":"1n+2n*10n%7n-5n**2n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":76,"value":"5n&13n|5n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":78,"value":"mixed = [4n, 6, -12n, 10, 4, 0, 0n]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":80,"value":"mixed.sort()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":82,"value":"mixed.sort((a, b) => a - b) ","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":84,"value":"mixed.sort((a, b) => (a < b) ? -1 : ((a > b) ? 1 : 0))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":86,"value":"BigInt.asIntN(10, 2n ** (10n - 1n) - 1n); //max","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":88,"value":"BigInt.asIntN(10, 2n ** (10n - 1n) );","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":90,"value":"BigInt.asUintN(64, 2n ** 64n - 1n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":92,"value":"// overflow\nBigInt.asUintN(64, 2n ** 64n) ","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":94,"value":"md`A BigInt behaves like a Number in cases where:\n- converted to a Boolean: via the Boolean function;\n- logical operators ||, &&, and !; or\n- conditional test ie. if`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":96,"value":"JSON.stringify(BigInt(1)) ","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":98,"value":"{\n BigInt.prototype.toJSON = function() { return this.toString() }\n return JSON.stringify(BigInt(1)) \n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":100,"value":"$3d","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":223,"value":"[Math.sign(0),\nMath.sign(55),\nMath.sign(-55)]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":225,"value":"Math.sign(NaN)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":227,"value":"Math.trunc(3.1)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":229,"value":"Math.cbrt(8)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":215,"value":"Math.abs(0.1 + 0.2- 0.3)\n## Date\n*epoch: midnight on January 1, 1970, UTC*\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":102,"value":"Date.now() //milliseconds since epoch","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":105,"value":"md`\n
\n### Instance Methods `","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":107,"value":"new Date(Date.UTC(2020, 5, 8, 19, 10, 0)); // month is 0 indexed","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":110,"value":"new Date(Date.UTC(2020, 5, 8, 19, 10, 0)).toLocaleString('de-DE', { weekday: 'long', year: 'numeric', month: 'long', day: 'numeric' })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":112,"value":"$3e","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":117,"value":"md`\n

\n## String\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":119,"value":"[typeof \"wtjs\", typeof new String(\"wtjs\")]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":121,"value":"\"wtjs\".padEnd(10,\"*\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":158,"value":"\"Some New methods\".startsWith(\"Methods\", 9)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":159,"value":"\"Some New methods\".startsWith(\"Methods\".toLowerCase(), 9)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":161,"value":"\"Some New methods\".endsWith(\"ew \", 9)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":163,"value":"\"Some New methods\".includes(\"Some\", 5)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":165,"value":"\"Loop\".repeat(-2)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":168,"value":"\"Loop\".repeat(0)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":170,"value":"String.fromCodePoint(9731 /*HTML Entity*/, 0x0001D49F /*UTF-32*/)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":172,"value":"md`\n

\n## (Tagged) String Literals\n`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":176,"value":"`\\`` === '`'","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":178,"value":"`${{valueOf:()=>(3),toString:()=>(2)}[Symbol.toPrimitive]=1}`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":180,"value":"String.raw(`print\\nraw`)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":182,"value":"String.raw`print\\nraw\\n${new Date()}`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":184,"value":"String.raw({raw: [1, 2, Number(3)]}, ' one ', {toString:()=>(' two ')},' three ')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":186,"value":"{\n let arr = [];\n let tagged=(str, ...keys)=>{\n arr.push([\"str: \",str]);\n arr.push([\"keys: \",keys]); \n arr.push([\"raw: \",String.raw(str)])\n }\n tagged`tagged template ${{complex:true}} \\n \\u00A9${Number(4)}` //#ES2015\n return arr;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":189,"value":"md`Usecase for tagged string literal`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":192,"value":"{\n function highlight(strings, ...values) {\n // here i is the iterator for the strings array\n return strings.reduce((result, string, i) => {\n return `${result}${string} ${values[i] || ''}`;\n }, '');\n }\n\n const author = 'Thomas A. Edison';\n const statement = `I have not failed. I've just found 10,000 ways that won't work.`;\n return highlight`${statement} by ${author}`;\n \n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":194,"value":"md`[more on tagged template literal](https://codeburst.io/javascript-es6-tagged-template-literals-a45c26e54761)`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":123,"value":"md`\n

\n## RegExp`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":125,"value":"typeof /ab+c/i","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":127,"value":"Object.getPrototypeOf(/ab+c/i).constructor.name","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":130,"value":"\"John Smith\".replace(/(\\w+)\\s(\\w+)/, \"$2, $1\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":132,"value":"'Some text\\nAnd some more\\r\\nAnd yet\\rThis is the end'.split(/\\r\\n|\\r|\\n/)\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":134,"value":"/[^.]+/.exec('http://mysub.domain.com')[0].substr(7)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":136,"value":"res = (/d(b+)(d)/i).exec('cdbBdbsbz')\n// looks like Array but not quite","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":4,"value":"md`\n
\n# Appendix`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":6,"value":"import {toc} from \"@harrystevens/toc\"","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","tool":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W3f","stdlib":"1"}} 33:null