ansaurus

Question

Answer 1

+6 A:

You could try str.match(/\d+/);

Chris Gutierrez 2009-12-04 19:34:06

A better solution than mine... I would of suggested this route if I was up to stuff on my reg expressions...

Ryan 2009-12-04 19:36:59

Thanks, wheres the best place to learn reg expressions for javascript?

usertest 2009-12-04 19:39:35

A pretty good site is regular-expressions.info. It also has a javascript regex tester. http://www.regular-expressions.info/javascriptexample.html

Chris Gutierrez 2009-12-04 20:29:35

Answer 2

A:

Try this...

parseInt("22px");

Ryan 2009-12-04 19:35:20

Answer 3

A:

"22px".substring(0,2); // returns "22"

But this only works if the number has always 2 digits.

Lenni 2009-12-04 19:35:30

Answer 4

A:

i think you can just go str.substring(0, 2)

Ridz 2009-12-04 19:36:22

Like Lenni said, it only works when there are 2 digits.

Jacob Relkin 2009-12-04 19:37:14

Answer 5

+4 A:

If you want an actual number, you should try parseInt(). It will take care of taking off the 'px' for you.

str = "22px";

num = parseInt(str, 10); // pass in the radix for safety :)

assert(num === 22);

Alex Sexton 2009-12-04 19:36:46

How might I extract the number from a number + unit of measure string using JavaScript?