This article analyzes the solution to the problem that JavaScript trim function cannot be used under IE, which has certain reference value for web front-end design. The specific analysis is as follows:
First of all, there is no problem using JavaScript’s trim function under Firefox:
<script language="javascript"> var test1 = " aa "; test1 = test1.toString(); test1 = test1.trim(); </script>
There is no problem when using this method under Firefox, but an error occurs under IE!
We can modify this:
String.prototype.trim=function(){return this.replace(/(^\s*)|(\s*$)/g,"");}
Add this sentence to the header, and the above can be run under both IE and FF:
<script language="javascript">
String.prototype.trim=function(){return this.replace(/(^\s*)|(\s*$)/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>
I believe that what is described in this article has good reference value for everyone to use javascript to design the compatibility of WEB front-end browsers.
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