Question

Its about to find filename and after that so find some matching string

var imgurl = "http://domain.com/wp-content/uploads/2012/10/DSC_2355-515x440.test.jpg";
var filename = /.*(?=\.)/.exec(imgurl.match(/.*\/(.*)$/)[1]);


if( filename.indexOf( "515x" ) !== -1 ) {
   alert("found!")
}



$("body").append(filename);

When i use filename.indexOf( "515x" ) so it doesn’t work

But it work when i use imgurl.indexOf( "515x" )

What i did wrong ?

Test the code here : http://jsfiddle.net/YkXTs/

Answer 1

Try this: http://jsfiddle.net/KQ4Kn/

This will fit the need filename.toString().indexOf("515x") :)

Code

var imgurl = "http://domain.com/wp-content/uploads/2012/10/DSC_2355-515x440.test.jpg";
var filename = /.*(?=\.)/.exec(imgurl.match(/.*\/(.*)$/)[1]);

if(filename.toString().indexOf("515x") != -1) {
   alert("found!")
}



$("body").append(filename);
​