Use JQuery to check if a String exists in an index of an Array

Question

Currently I am doing the following to check if a String exists in an array:

  $('#finance').click(function(){ // Show Finance & OD
                console.log('Finance jobs');
                for(i = 0; i < jobs.length; i ++){
                    if(jobs[i].department === "Finance & OD"){
                        console.log(jobs[i]);
                    }
                }
            });

However, I'd like to just check if a sub string exists and for it to not be case sensitive. So I tried this but It did not work:

$('#finance').click(function(){ // Show Finance & OD
                    console.log('Finance jobs');
                    for(i = 0; i < jobs.length; i ++){
                        if(jobs[i].department.toLowerCase().indexOf("Finance & OD") >= 0){
                            console.log(jobs[i]);
                        }
                    }
                });

I got this error in the console window: Uncaught TypeError: Cannot read property 'toLowerCase' of undefined

I'm wondering how I could fix my code so that rather checking for the entire string, I would check for part of the String say "Finance" for example and that it would not be case sensitive.

can you show what does 'jobs' variable contain..?

Sudhir Bastakoti
– Sudhir Bastakoti

2015-03-23 10:29:44 +00:00
Commented Mar 23, 2015 at 10:29 — Sudhir Bastakoti
– Sudhir Bastakoti, Commented Mar 23, 2015 at 10:29

OddDev · Accepted Answer · 2015-03-23 10:44:21Z

4

Do it like this:

$('#finance').click(function(){ // Show Finance & OD
                    console.log('Finance jobs');
                    for(i = 0; i < jobs.length; i ++){
                        if(jobs[i].department != 'undefined' && jobs[i].department.toLowerCase().indexOf("Finance & OD") >= 0){
                            console.log(jobs[i]);
                        }
                    }
                });

I think the problem is that you loop through some "undefineds" and therefor get an uncatched exception.

edited Mar 23, 2015 at 10:44

answered Mar 23, 2015 at 10:32

OddDev

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Comments

jogesh_pi · Accepted Answer · 2015-03-23 10:42:12Z

1

This is you can check for particular word and also not case-sensitive:

var jobs = ["Finance & OD", "texT"];
for( var i in jobs ) {

    var regex = new RegExp( "Finance", "i" );
    if( jobs[i].match( regex ) ) {
        console.log(jobs[i]);
    }
}

answered Mar 23, 2015 at 10:42

jogesh_pi

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Comments

Viswanath Donthi · Accepted Answer · 2015-03-23 10:33:11Z

0

You need to check for undefined. Try this:

if(jobs[i].department != "undefined" && jobs[i].department.toLowerCase().indexOf("Finance & OD") >= 0){
     console.log(jobs[i]);
}

answered Mar 23, 2015 at 10:33

Viswanath Donthi

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