There is no problem using the trim function of javascript under firefox
<script language="javascript"> var test1 = " aa "; test1 = test1.toString(); test1 = test1.trim(); </script>
There is no problem using this under Firefox, but it will be reported in IE.
Then we can modify it
String.prototype.trim=function(){return this.replace(/(^/s*)|(/s*$)/g,"");}Add this sentence on the head, and the above can be run under IE and FF.
<script language="javascript"> String.prototype.trim=function(){return this.replace(/(^/s*)|(/s*$)/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>