Resolved Function to check if a string contains numbers

[hunter1611]

Hey everyone,

Is there a Javascript function to check if a string contains any numbers?

Also, is there one to check if a string contains special characters or symbols?

Thanks!

[WolfShade]

RegEx (Regular Expression) test:

var regexNum = /\d/g;// Global check for numbers
var a = "This contains no numbers", b="This contains 1 number";
var c = regexNum.test(a), d = regexNum.test(b);
alert(c + " and " + d);// will alert false and true

[hunter1611]

Ok so, slightly confused. How do I plug a variable into that? Is regexNum the variable you're checking for numbers?

(Sorry, I'm really not a Javascript person..I fumble through it as needed).

[Philip M]

Originally Posted by hunter1611

Ok so, slightly confused. How do I plug a variable into that? Is regexNum the variable you're checking for numbers?

(Sorry, I'm really not a Javascript person..I fumble through it as needed).

The variables a and b in Wolfshade's example contain the strings to be analysed.

To answer your second question

var str = "This string contains 2 special characters ! and ?"
alert (/[^a-z0-9\s\_]/gi.test(str)); // i.e. anything other than letters, numbers, space, underscore

[hunter1611]

Heh, whoops, ignore this post...something broke in my script...

[hunter1611]

OK! Got it working! Thank you!