Javascript trim function not available under IE

2020-03-30 03:55:16
OfStack

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>