Removing the last digits in string

Question

I have a string that looks like this:

[APPLE PIE] Sei Shoujo Sentai Lakers 3 Battle Team Lakers 3 (100% FULL-PIC)_20121104_032834

I want to remove the digits at the end of the string, basically the 16 digits at the end of the string. In the end it should look like this:

[APPLE PIE] Sei Shoujo Sentai Lakers 3 Battle Team Lakers 3 (100% FULL-PIC)

This is my code that I have written so far

var str="[APPLE PIE] Sei Shoujo Sentai Lakers 3 Battle Team Lakers 3 (100% FULL-PIC)_20121104_032834";
var n=str.substr(1,74);
document.write(n);

The problem is the string will be different so each will have different amount of characters. So how I remove the digits at the end of the string in javascript?

Answer 1

If it is always exactly 16 digits in the end of the string then:

s = s.substr(0, s.length - 16);

Otherwise you can use regexp:

s = s.replace(/[_0-9]+$/, '');