Question

I have this code but I can only get it to work in Internet Explore – it doesn’t work in Firefox:

var max1box = document.getElementById('length'),
    max2box = document.getElementById('width');
    max1 = 100;
    min1 = 20;
    max2 = 200;
    min2 = 10;

max1box.addEventListener('change',validateValues);
max2box.addEventListener('change',validateValues);

function validateValues() {

    if (this == max1box && this.value > max1 && this.value > max2box.value)
    {
       max1box = max2box; 
       max2box = this;  
    } 

    if (max1box .value > max1) {
        max1box .value = max1;
    }
    if (max1box .value < min1) {
        max1box .value = min1;
    }        

    if (max2box.value > max2) {
        max2box.value = max2;
    }
    if (max2box.value < min2) {
        max2box.value = min2;
    }
   }

http://jsfiddle.net/gdau4/

The Javascript code simply just doesn’t work at all. It’s as if I’ve just got two normal text boxes.

I have tested it in Firefox 3.6 and Internet Explore 9.

Answer 1

In method

 addEventListener

The third parameter is required in firefox, and it’s a boolean variable standing for event bubling.
You can try

 max1box.addEventListener('change',validateValues,false);
 max2box.addEventListener('change',validateValues,false);