Javascript .indexOf not working on an int array

javascript indexof
gta0004 picture gta0004 · Jan 29, 2013 · Viewed 22.2k times · Source

Code:

function showlayer(name){
    var size = js_array.length
    var index = js_array.indexOf(name);
    var plusOne = js_array[index+1];
    document.write("" + name + "<br />" + js_array + "<br />" + index + "<br />" +
                   plusOne + "<br />" )
    ...
}

Output:

301
300,299,301,290,303,304,302,310,291,306,308,305,307,292,294,295,309
-1
300

All possible values of name are in the array, but for some reason indexOf() never finds them. Whats up?

Answer

Naftali aka Neal picture Naftali aka Neal · Jan 29, 2013

Try this instead:

...
var index = js_array.indexOf(parseInt(name, 10)); // so that it does not try to compare strings...
...

Related questions

How to find the array index with a value?

Say I've got this imageList = [100,200,300,400,500]; Which gives me [0]100 [1]200 etc. Is there any way in JavaScript to return the index with the value? I.e. I want the index for 200, I get returned 1.

Read More
How to trim a file extension from a String in JavaScript?

For example, assuming that x = filename.jpg, I want to get filename, where filename could be any file name (Let's assume the file name only contains [a-zA-Z0-9-_] to simplify.). I saw x.substring(0, x.indexOf('.jpg')) on …

Read More
Get value of a string after last slash in JavaScript

I am already trying for over an hour and cant figure out the right way to do it, although it is probably pretty easy: I have something like this : foo/bar/test.html I would like to use jQuery to …

Read More