jquery check is string is inside a string

Question

I got 2 variables;

value = 'com'; longString= "com-233-123-232-123";

I'd like to check if "value" is inside "longString". I tried using regex with test() but I fail, maybe you know better.

Jahan Zinedine · Accepted Answer · 2011-01-09 13:26:11Z

3

I think the indexOf(substr, [start]) is enough no need to regex.

indexOf(substr, [start])

Searches and (if found) returns the index number of the searched character or substring within the string. If not found, -1 is returned. "Start" is an optional argument specifying the position within string to begin the search. Default is 0.

http://www.javascriptkit.com/javatutors/string4.shtml

answered Jan 9, 2011 at 13:26

Jahan Zinedine

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Comments

Wasim Karani · Accepted Answer · 2011-01-09 13:41:48Z

2

Two ways

1st indexOf

if (longString.indexOf(value) != -1)
   // found
else
   // not found

2nd split

var value = 'com'; var longString= "com-233-123-232-123";
var split1=longString.split("-");
var i=0;
var found=0;
while (i<split1.length)
{
    if(split1[i]==value)
    {
        found=1;
        break;
    }
    i++;
}
if(found==1)
    //found
else
    //not found

answered Jan 9, 2011 at 13:41

Wasim Karani

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Comments

MarkXA · Accepted Answer · 2011-01-09 13:26:02Z

2

Don't use regular expressions for this - if the value you're looking for can be interpreted as a regular expression itself then you'll have trouble. Just check for longString.indexOf(value) != -1.

answered Jan 9, 2011 at 13:26

MarkXA

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Comments

Jonathan Leffler · Accepted Answer · 2011-07-09 05:53:19Z

2

What does jQuery has to do with this? This is a simple Javascript problem

if (longString.indexOf(value) != -1)
    // We found it
else
   // We didn't find it

edited Jul 9, 2011 at 5:53

Jonathan Leffler

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answered Jan 9, 2011 at 13:24

abyx

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1 Comment

angry kiwi Over a year ago

hmm I dont know man, just asking jquery maybe because I prefer jquery solution, but anything that works is good.

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