How to check if a text variable is contained within another variable

Question

just wondering how I can check to see if a text variable is contained within another variable. like

 var A = "J";

 var B = "another J";

something like :contains but for variables.

thanks

Ikke · Accepted Answer · 2009-08-07 08:41:20Z

2

Javascript itself has a function for this: indexOf.

alert("blaat".indexOf('a') != -1);

answered Aug 7, 2009 at 8:41

Ikke

102k23 gold badges101 silver badges121 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Amber · Accepted Answer · 2009-08-07 08:50:15Z

2

Assuming you mean you want to find whether the contents of A are in B, just use the following:

var found = !(B.indexOf(A) == -1);

answered Aug 7, 2009 at 8:50

Amber

531k89 gold badges643 silver badges558 bronze badges

Elzo Valugi · Accepted Answer · 2009-08-07 08:39:44Z

0

You want to check if one string belongs into another? You can use regular expresions or strpos like function

function strpos( haystack, needle, offset){
    var i = (haystack+'').indexOf(needle, (offset ? offset : 0));
    return i === -1 ? false : i;
}

To my knowledge jQuery doesn't have a native function for doing what you want.

answered Aug 7, 2009 at 8:39

Elzo Valugi

28.1k17 gold badges97 silver badges115 bronze badges