javascript

Javascript trim function not available under IE

Javascript’s trim function works fine under firefox

<script language="javascript">
var test1 = " aa ";
test1 = test1.toString();
test1 = test1.trim();
</script>

This works fine in firefox, but it reports an error in IE So we can change that

String.prototype.trim=function(){return this.replace(/(^s*)|(s*$)/g,"");}

Add this sentence to the top, and the top one will run under both IE and FF

<script language="javascript">
String.prototype.trim=function(){return this.replace(/(^s*)|(s*$)/g,"");}
var test1 = " aa ";
test1 = test1.toString();
test1 = test1.trim();
</script>

Methods provided by JQuery:

<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.js"></script>
</head>
<body>
<button>Show Trim Example</button>
<script>

$("button").click(function () {
var str = " lots of spaces before and after ";
alert("'" + str + "'");

str = jQuery.trim(str);
alert("'" + str + "' - no longer");
});

</script>
</body>
</html>