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Observable
The end-to-end solution for building and hosting better data apps, dashboards, and reports.
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Edited
Sep 10, 2021
5 forks
41 stars
Insert cell
Insert cell
{
const
div
=
html
`<div>`
;
let
request
=
requestAnimationFrame
(
function
tick
(
)
{
div
.
textContent
=
Date
.
now
(
)
;
request
=
requestAnimationFrame
(
tick
)
;
}
)
;
invalidation
.
then
(
(
)
=>
cancelAnimationFrame
(
request
)
)
;
return
div
;
}
Insert cell
Insert cell
{
const
div
=
html
`<div>`
;
while
(
true
)
{
div
.
textContent
=
Date
.
now
(
)
;
yield
div
;
}
}
Insert cell
Insert cell
html
`<div>${
now
}`
Insert cell
Insert cell
{
++
mutable
count
;
// This should always be one.
yield
mutable
count
===
1
?
html
`<div style="color:green;">Success!</div>`
:
html
`<div style="color:red;">Failure!</div>`
;
try
{
yield
invalidation
;
}
finally
{
--
mutable
count
;
}
}
Insert cell
Insert cell
Insert cell
Generators
.
observe
(
notify
=>
{
notify
(
42
)
;
return
(
)
=>
console
.
log
(
"invalidated"
)
;
}
)
Insert cell
Insert cell
{
let
done
=
false
;
return
{
next
(
)
{
if
(
done
)
return
{
done
:
true
}
;
done
=
true
;
return
{
done
:
false
,
value
:
42
}
;
}
,
return
(
)
{
console
.
log
(
"invalidated"
)
;
}
}
;
}
Insert cell
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
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Observable
JavaScript in Observable
Observable
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