CODEWITHSUNDEEP
javascriptarraysindexing
menardmam
menardmam

Reputation: 9986

How to pass a variable in array index

i repeat the title because everything is there : How to pass a variable in array index

var xyz = 0;
var somearray = ['a','b','c'];
var content = somearray[xyz]; - **that dont work !**

what should be the RIGHT way to do that ?

Upvotes: 3

Views: 14996

Answers (2)

Oddlyeven
Oddlyeven

Reputation: 11

Just a stab in the dark here, but perhaps the OP is using inArray and might be asking (indirectly) how to get the intellisense working in whatever tool they're using.

If that's the case, I'm sure someone here can provide a more elegant solution but something similar to the following should work:

var somearray = ['a','b','c'];
var index = $.inArray('a', somearray);
if (index > -1) {
    index = isNaN(index) ? 0 : index;
    var content = somearray[index];
}

Upvotes: 1

Joe Zitzelberger
Joe Zitzelberger

Reputation: 4263

That actually is correct. After executing your code, minus the comment, content contains 'a'.

<html>
<head>
   <title>Test</title>
</head> 
<body>
<script type="text/javascript"> 
    var xyz = 0;
    var somearray = ['a','b','c'];
    var content = somearray[xyz];
    alert(content);
</script>
</body>
</html>

You should get a nice little alert box that says "a".

Upvotes: 0

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