Check if string contains character not on list

Question

For example, I have an approved list of characters: "a", "b", and "c".

So if I had the string:

var string = "aaabc8abccc";

I would like the script to detect the fact that the "8" is not "a", "b", or "c" and output:

var output = "aaabc<span style='color:red;'>8</span>abccc";

How can I do this?

Ofer Zelig · Accepted Answer · 2012-03-25 07:06:39Z

5

Regex:

result = subject.replace(/[^abc]/ig, "<span style='color:red;'>$&</span>");

answered Mar 25, 2012 at 7:06

Ofer Zelig

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1 Comment

@qwertymk, It matches the matched string. I've always loved: gskinner.com/RegExr

mowwwalker · Accepted Answer · 2012-03-25 07:05:26Z

3

var strn= "aaabc8abccc";
var chrs = 'abc';
strn=strn.replace(new RegExp('([^'+chrs+'])','g'),'<span style="color:red">$1</span>');

answered Mar 25, 2012 at 7:05

mowwwalker

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I'm not gonna lie, there was some initial turbulence with the code, but it works now.

ProdoElmit · Accepted Answer · 2012-03-25 07:10:21Z

-2

You can do it with regular expressions using string.replace(regexp/substr,newstring)

In your case it will be something like

string.replace(/^[a-z]*/,"<span>$1</span>")

answered Mar 25, 2012 at 7:10

ProdoElmit

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