Search text on javascript

Question

How to search text on javascript.

var v=20;
str = "The rain 20 in SPAIN stays mainly in the plain";
var patt1=/ain  v/gi;
var n = str.match(patt1);
alert(n);

i am trying it but not getting any result. Where am i wrong, any buddy can you please help me out.

I want to search ain 20 but ain is constant and 20 come throe var v. — mdivya, Oct 25 '11 at 17:34

Joe · Answer 1 · 2011-10-25T17:37:31.660

1

var v=20;
var str = "The rain 20 in SPAIN stays mainly in the plain";
var patt1=new RegExp("ain " + v, "gi");
var n = str.match(patt1);
alert(n); // alerts 'ain 20'

Example

edited Oct 25 '11 at 17:37

answered Oct 25 '11 at 17:12

Joe

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score 1 · Answer 2 · answered Oct 25 '11 at 17:14

1

I may be missing the point because question was very broad, but you could also use str.indexOf(findThisString)

answered Oct 25 '11 at 17:14

Tim

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score 1 · Accepted Answer · answered Oct 25 '11 at 17:36

var v = 20; // Variable part of search query
var str = "The rain 20 in SPAIN stays mainly in the plain"; // String to search
var n = str.match('ain ' + v); // The searching, returns null if not found or the matches found. Notice the 'ain' string has been added (this can of course be changed)

if(n != null){ // if not null
   alert(n + ' found!');
}else{ // if null
   alert(v + ' not found...');   
}

I think this will help you out: http://jsfiddle.net/xFeAH/

Search text on javascript

3 Answers3