JavaScript Multi Dimentional Array

Question

I have created a multidimensional array for a jobs feed like so:

var jobs = [                
        ["JOB222" , "Painter"],                 
        ["JOB333" , "Teacher"],                 
        ["JOB444" , "Delivery Driver"],             
];

I can access the array using the index number

alert( jobs[2][1] ); // Alerts Delivery Driver

If I set the reference number manually, I can loop through the array to find a match.

var viewingJobRef = "JOB333";
for (var i=0;i<jobs.length;i++) {

    if (jobs[i][0] == viewingJobRef) {
      alert(jobs[i][1]); // This will alert Teacher
    }

}

So my question is, is it possible to access the array directly and not use a loop?

var viewingJobRef = "JOB333";
alert( jobs[viewingJobRef][1] );  // I want this to alert Teacher

Firefox error console says: jobs[viewingJobRef]is undefined, how do I do it?

Use an object instead of an array

Gary
– Gary

2014-04-09 13:26:35 +00:00
Commented Apr 9, 2014 at 13:26 — Gary
– Gary, Commented Apr 9, 2014 at 13:26

YannPl · Accepted Answer · 2014-04-09 13:26:08Z

10

You want to use objects:

var jobs = {                
        "JOB222" : "Painter",                 
        "JOB333" : "Teacher",                 
        "JOB444" : "Delivery Driver"             
};

Access like this :

var viewingJobRef = "JOB333";
alert( jobs[viewingJobRef] );

OR

alert( jobs["JOB333"] );

OR

alert( jobs.JOB333 );

answered Apr 9, 2014 at 13:26

YannPl

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1 Comment

Scott Over a year ago

Thanks you, this works perfect, I'll use objects instead of arrays.

blue · Accepted Answer · 2014-04-09 13:28:13Z

0

You may use objects:

var jobs = {
    "JOB222": "Painter",
    "JOB333": "Teacher",
    "JOB444": "Delivery Driver"
};

And loop with:

for ( var i in jobs ) {...}

Or access directly like:

alert( jobs.JOB333 );

answered Apr 9, 2014 at 13:28

blue

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