How to use comparison operator in Javascript for two input values

Question

I want to compare the two input values, just try in javascript, but it\'s not working fine. I\'m using the following code

function check_closing()
{
var opening         


        

Answer 1

You're comparing the strings instead of integers, so you need to convert the strings to integers. Since as strings, '8541' > '8241'

>>>'8541' > '8241'
true
>>>'954' > '8241'
true

>>>8541 > 8241
true
>>>954 > 8241
false

So you want:

function check_closing()
{
    var opening = parseInt($('#opening').val());
    var closing = parseInt($('#closing').val());
    if(opening > closing)
    {
        alert('Opening is greater than Closing. Please enter the correct value');
        $('#closing').val('');
    }
}

To add more to why exactly this happened, in case you're interested: Strings are compared character by character, iirc. So the '9' is greater than the '8' but the '8241' is less than '8541' because '2' is less than '5'.