String.prototype.startWith=function(str){
var reg=new RegExp("^"+str);
return reg.test(this);
}
String.prototype.endWith=function(str){
var reg=new RegExp(str+"$");
return reg.test(this);
}
<script type="text/javascript">
String.prototype.endWith=function(s){
if(s==null||s==""||this.length==0||s.length>this.length)
return false;
if(this.substring(this.length-s.length)==s)
return true;
else
return false;
return true;
}
String.prototype.startWith=function(s){
if(s==null||s==""||this.length==0||s.length>this.length)
return false;
if(this.substr(0,s.length)==s)
return true;
else
return false;
return true;
}
</script>
