Javascript adding numbers as strings

Question

I have the following code which interprets the numbers as strings and adds them like 100300 instead of 400:

var rate = document.getElementById(\'pur_price\')         


        

Answer 1

Use function parseInt() it can be:

document.getElementById('avg_claim_rate').value=id;
document.getElementById('amount_claim').value=parseInt(pprice)+refurb;

Answer 2

var result = +pprice + + refurb;

Answer 3

As @sergio said, you can use JavaScript's built in parseInt function. Just for reference, you can multiply it by one. JavaScript always converts a string to a number if you multiply it. So you could do something like this:

var num1 = "300";
var num2 = "100";

var num1 = num1 * 1; // Converts string to the number 300
var num2 = num2 * 1;

document.getElementById('number').value = num1+num2;

<input id="number"/>

This is just an alternate way to do the same thing. Use whatever is easiest for you. Hope that helps!

Answer 4

You can use parseInt function:

var pprice = parseInt(document.getElementById('pur_price').value, , 10);
var rate1 = parseInt(document.getElementById('select2').value, , 10);