How to use Array and IndexOf together?

Question

I am trying to create an array of strings and use indexOf function to check if the text exists on or not, if it does I want it to execute else do nothing? for .e.g One exists on so indexOf recognizes that executes The problem is this code is not working at the moment it was working when I was not using an array.

UPDATES- Thanks that indexOf works fine but the way I have used an array on var str doesn't seem to work.

HTML


 One
 No.

Jquery

var array =  ['One', 'Two', 'Three', 'Four'];
var str = $('td:contains(" + array + ")').text();
if(array.indexOf(str) > -1){
 console.log('Array works');
}

Any help will be much appreciated

user_367401 · Answer

You're using it the wrong way around. In this case, you want the indexOf() prototype of Array, not string, so your logic should be:

if( array.indexOf(str) > -1 )
{
  // Do stuff!
}

user_1169342 · Answer

As @BenM specified, the .indexOf() method is not used this way.

Maybe this snippet will be of use :

var array =  ['One', 'Two', 'Three', 'Four'];

// iterate over every  element found in the page with the .each() function
$('td').each(
    function(){
        if(array.indexOf($(this).text()) > -1){
            console.log('"' + $(this).text() + '" was found in the array');
        }
    }
);

How to use Array and IndexOf together?

2 Answers