Iterating
data = [ {"city":"seattle", "state":"WA", "population":652405, "land_area":83.9}, {"city":"new york", "state":"NY", "population":8405837, "land_area":302.6}, {"city":"boston", "state":"MA", "population":645966, "land_area":48.3}, {"city":"kansas city", "state":"MO", "population":467007, "land_area":315} ];
function count(values) { var count = 0; data.forEach(function(d) { count += 1; }); console.log(count); }
count
function functionCell(count) { var count1 = 0; data.forEach(function(d) { count1 += 1; }); return count1; }
function count2(values) { var count2 = 0; data.forEach(function(d) { count2 += 1; }); return count2; }
console.log(data.length)
{ let count4 = 0; data.forEach(function(d) { count4 += 1; }); return count4; }
{ var dataObject = {"name":"Carl", "age":"48", "salary":"12300"}; var copyOfData = _.clone(dataObject); copyOfData.age = +copyOfData.age; copyOfData.salary = +copyOfData.salary; console.log(dataObject); }
{ var count = 0; data.forEach(function(d) { // count1 wasn't declared so you got an error -- I think you meant count count += 1; }); return count; }
References
http://learnjsdata.com/iterate_data.html
https://beta.observablehq.com/@mbostock/manipulating-flat-arrays