Question

i need help with a function in javascript.

I have strings like this: 124text or 12hello

I need a function which maked the following:

foo('124text') -> 123

and

foo('12hello') -> 12

in words: i give it a input string and the function return a integer which is the number infront of this string

how to do it with javascript?

Answer 1

parseInt will do exactly that

parseInt('123abc',10) //returns 123 as a number

Live example: http://jsfiddle.net/eAe4v/