How to remove $ from javascript variable?

Question

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Remove characters from a string

I have a variable p which I would like to remove the $ from. This variable will be a number such as $10.56. How can I do this? I thought it could be done using .replace('$','') but i'm not quite sure how to implement this.

Here is my javascript code:

function myFunction() {
  var p = parseFloat(document.getElementById('p_input').value);
  var q = parseFloat(document.getElementById('q_input').value);
  if (!q){
  document.getElementById('t').value = '';
  }
  else {
  var t = q * p;
  document.getElementById('t_output').value = t;
  }
}

The code you have provided is irrelevant to your question. Start with var p = "$10.56" and work from there. — ColinE, Dec 20 '12 at 08:45
`replace()` returns the string with the replaced stuff. Have you tried `var newString = oldString.replace('$', '');` ? — undefined, Dec 20 '12 at 08:47
yes i did try it. But I didn't know where to put the replace part. — rural.user, Dec 20 '12 at 11:59

Cerbrus · Answer 1 · 2012-12-20T08:52:47.497

6

It's pretty simple:

var myString = "$15.62"
console.log(myString.replace('$', ''));
//Logs: "15.62"

Please note that this new value is not actually "saved" to myString, you'll have to assign it to a variable, yourself:

var newString = myString.replace('$', '');

edited Dec 20 '12 at 08:52

answered Dec 20 '12 at 08:45

Cerbrus

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+1 - you are JavaScript genius! – ColinE Dec 20 '12 at 08:46
@ColinE: Bow before the might of my loose typing! (thanks!) – Cerbrus Dec 20 '12 at 08:47
@dystroy: Nitpicking, but you're right. Edited :P – Cerbrus Dec 20 '12 at 08:48
1

@Cerbrus Frankly, you're answering a trivial question that was answered in comment before you. Nitpicking is kindof kind and the minimum we can do, don't you think ? – Denys Séguret Dec 20 '12 at 08:49
*places a wooden wing bow on the keyboard* – John Dvorak Dec 20 '12 at 08:49

score 2 · Accepted Answer · answered Dec 20 '12 at 08:46

2

Try this, assuming that the values of p_input and q_input will be the money values:

var p = parseFloat(document.getElementById('p_input').value.replace('$', ''));
var q = parseFloat(document.getElementById('q_input').value.replace('$', ''));

answered Dec 20 '12 at 08:46

Stegrex

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How to remove $ from javascript variable?

2 Answers2