Copy into text box but remove spaces/commas/formatting/signs (Javascript)

[sports_brah]

Per title, I'm looking to make a small little feature which would allow people to paste in two separate boxes some numbers. There is a calculation that is run when a button is clicked.

I'm using a bit of HTML/Javascript, but I'm running into an issue.

If number goes in like 1000 then it is fine. If the number is put in like 1,000 (or there is a space or a CCY sign) then it returns NaN which is less than useful....

Anyone got a way around this? Thanks.

 

[jsmoke]

Have a look at isNaN to validate numbers in textbox, otherwise you will need to write a parser to remove any commas, spaces or other chars.

 

[planty]

You can use a regex in javascript to remove any non-numeric characters:

myString = myString.replace(/\D/g,'');

You could execute this on your values when the calculation button is clicked.

 

[GravyMonster]

Just be aware that if you're working with floating point numbers that will remove the '.' too. Try:

var number = parseFloat(yourValue.replace(/[^\d.]/g, '');

You may also need to add '-' to the capturing group if you want to allow negative numbers.