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 ?
asked Jan 26, 2011 at 22:49
menardmam
9,99229 gold badges87 silver badges114 bronze badges
-
actually the above does work (at least in my test in firebug I get content = 'a'). What about the above isn't working for you?scrappedcola– scrappedcola2011年01月26日 22:55:14 +00:00Commented Jan 26, 2011 at 22:55
-
works heres a demoAly– Aly2011年01月26日 22:55:25 +00:00Commented Jan 26, 2011 at 22:55
2 Answers 2
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];
}
Sign up to request clarification or add additional context in comments.
1 Comment
glenatron
A helpful answer, but inferring a lot more from the question than I think one can so it seems as though you are offering a really helpful answer to a different question.
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".
answered Jan 26, 2011 at 22:54
Joe Zitzelberger
4,3522 gold badges30 silver badges43 bronze badges
1 Comment
Joe Zitzelberger
Did you cut and paste your actual code into your question? Or retype it? You might have a typo in your running source, or a mis-cased character.
lang-js