Question

I have two textboxes, with that am trying to validate like

var max = $("#txtMaximumMark").val()
var min = $("#txtMinimumMark").val();

var valid = max > min;

if I give 10 as minimun and 100 as maximum, it shows the given value is valid, but if I give 40 as minimum and 100 as maximum, the valid returns false, whats goin on here, why it returns false, can anyone help me here…

Answer 1

Because it’s comparing strings. Using .val() returns strings, so when you compare them, it compares them as strings.

In strings, 4 is higher than 1, so 40 is higher than 100 (like a is higher than baaa).

To do your comparison correctly, use parseInt to cast your strings to integers:

var valid = parseInt( max, 10 ) > parseInt( min, 10 );