String replace in javascript

Question

So I have this string var total_res = R4-4R4-5; and I want to replace R4-5 substring with "",but I have tried this code so far and it doesn't work:

Javascript:

<script>
 $(document).ready(function(){
 ss = "R4-5";
 lool = total_res.replace(ss,"");
 alert(lool);//it alerts the same original string
 }); 
</script>

What is wrong? Thank you for your help.

Answer 1

I'm not sure if you meant to or not, but total_res should be declared as a string...like:

var total_res = "R4-4R4-5";

Using your code, it works like that:

http://jsfiddle.net/rV8Cb/

If you checked your browser's (error) console, you'd see: Unexpected token ILLEGAL.

Note that .replace() only replaces the first occurrence of the string. You'd have to use a regular expression if you want to replace every occurrence of "R4-5" in the string.

Answer 2

You need to define total_res in quotes. then it works fine for me.

var total_res = "R4-4R4-5";

http://jsfiddle.net/PxJrn/