Skip to content

Instantly share code, notes, and snippets.

@chrisevans

chrisevans/LICENSE.txt

Forked from atk/LICENSE.txt
Created August 5, 2011 05:57
Show Gist options
  • Save chrisevans/1126989 to your computer and use it in GitHub Desktop.
Save chrisevans/1126989 to your computer and use it in GitHub Desktop.
Download ZIP
polyfill an ES5-compatibile Array.isArray where needed.
Raw
annotated.js
// only set function if not already available
Array.isArray || (Array.isArray = function(
a // array or not array, this is the question
){
// test with Object.prototype.toString
return {}.toString.call(a) == '[object Array]'
});
Raw
index.js
Array.isArray||(Array.isArray=function(a){return{}.toString.call(a)=='[object Array]'});
Raw
LICENSE.txt
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
Version 2, December 2004
Copyright (C) 2011 Alex Kloss <[email protected]>
Everyone is permitted to copy and distribute verbatim or modified
copies of this license document, and changing it is allowed as long
as the name is changed.
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. You just DO WHAT THE FUCK YOU WANT TO.
Raw
package.json
{
"name": "isarray",
"description": "polyfill an ES5-compatibile Array.isArray where needed.",
"keywords": [
"polyfill",
"es5",
"isArray"
]
}
Raw
test.html
<!DOCTYPE html>
<title>Foo</title>
<div>Expected value: <b>false, true, false, false, false</b></div>
<div>Actual value: <b id="ret"></b></div>
<script>
// write a small example that shows off the API for your example
// and tests it in one fell swoop.
var isArray = Array.isArray||(Array.isArray=function(a){return{}.toString.call(a)=='[object Array]'});
document.getElementById( "ret" ).innerHTML = [isArray({}), isArray([]), isArray(""), isArray(0), isArray(true)];
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment