Question

I want to compare 2 values under some conditions.

If $(".value1").text() and $(".value2").text() start with "v", then check whether
number of $(".value1").length (in this case 0.1)) < $(".value1").length (in this case 0.4)

<div class="value1">v0.1</div>
<div class="value2">v0.4</div>

First, I want to check whether the value of the div starts with "v", then I want to compare the value after the "v".

How would I do that and how would the syntax look like?

Your help is much appreciated.

Answer 1

  var value1 = $('.value1').text();
  var value2 = $('.value2').text();

  if (value1.indexOf('v') == 0 && value2.indexOf('v') == 0) {
    var version1 = parseFloat(value1.substring(1), 10);
    var version2 = parseFloat(value2.substring(1), 10);
    if (version1 > version2) {
      document.write(value1 + ' > ' + value2);
    }
    else if (version1 < version2) {
      document.write(value1 + ' < ' + value2);
    }
    else {
      document.write(value1 + ' == ' + value2);
    }
  }

A working example: http://jsfiddle.net/Kncf4/