How can I access a data from another object in JavaScript?

Question

I want to access availJobs in jobs.scan object but I couldn't. It is not defined in jobs.attack. What can I do to access the part of jobs.scan in other objects?

var jobs = new Array();

jobs.scan = function() {
    var availJobs = new Array();
    var jobContents = dom.get("app8743457343_content");
    var boldthreads = jobContents.getElementsByTagName('b');
    for(var i = 0; i < boldthreads.length; i++) {
        if(boldthreads[i].style.color == 'silver') {
            availJobs.push(boldthreads[i].textContent);
        }
    }
    return availJobs;
}

jobs.attack = function() {
    jobs.scan();
    alert(jobs.availJobs[0]);
}

jobs.attack();

availJobs[0] in jobs.attack doesn't work. It's undefined. How can I set the availJobs as public and can be accessed in other objects?

Thanks for all the help!! Here's the code that I put:

var jobs = {
    availJobs: new Array(),
    scan: function() {
        var jobContents = dom.get("app8743457343_content");
        var boldthreads = jobContents.getElementsByTagName('b');
        for(var i = 0; i < boldthreads.length; i++) {
            if(boldthreads[i].style.color == 'silver') {
                this.availJobs.push(boldthreads[i].textContent);
            }
        }
    },
    attack: function() {
        this.scan();
        alert(this.availJobs[0]);
    },
};

jobs.attack();

This code is definitely more elegant don't you think? I used this and it worked!

Alex · Accepted Answer · 2020-10-05 11:48:35Z

3

{} is used to initialize an object and Array to initialize an array.

var jobs = {
    availJobs : new Array()
}

jobs.scan = function() {
    var jobContents = dom.get("app8743457343_content");
    var boldthreads = jobContents.getElementsByTagName('b');
    for(var i = 0; i < boldthreads.length; i++) {
        if(boldthreads[i].style.color == 'silver') {
            availJobs.push(boldthreads[i].textContent);
        }
    }
    return availJobs;
}

In a {} declaration, you can put add multiple members to your object if you separe them with a comma , :

var jobs = {
    availJobs : new Array(),
    anotherMember : null,
    anotherArray : new Array(),
    aFunction = function() {...}
}

edited Oct 5, 2020 at 11:48

Alex

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answered Mar 19, 2009 at 13:37

ybo

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Comments

Alex Fort · Accepted Answer · 2009-03-19 13:36:39Z

0

I may be wrong here, but I'm pretty sure you need to declare availJobs outside of the function itself, IE: jobs.availJobs = new Array();

answered Mar 19, 2009 at 13:36

Alex Fort

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Comments

Eugene Morozov · Accepted Answer · 2009-03-19 13:37:38Z

0

Your code is incorrect. jobs.scan is one function, jobs.attack is another. availJobs is a local variable defined in jobs.scan. You can't access local variables of one function from another.

Even more, availJobs doesn't exist by the time you try to access it, because jobs.scan is already finished.

answered Mar 19, 2009 at 13:37

Eugene Morozov

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Comments

chills42 · Accepted Answer · 2009-03-19 13:38:45Z

0

You need to declare the availJobs array and jobs should be an object.

var jobs = {}

jobs.availJobs = []

jobs.scan = function() {
    var availJobs = new Array();
    var jobContents = dom.get("app8743457343_content");
    var boldthreads = jobContents.getElementsByTagName('b');
    for(var i = 0; i < boldthreads.length; i++) {
        if(boldthreads[i].style.color == 'silver') {
            availJobs.push(boldthreads[i].textContent);
        }
    }
    return availJobs;
}

jobs.attack = function() {
    jobs.scan();
    alert(jobs.availJobs[0]);
}

jobs.attack();

answered Mar 19, 2009 at 13:38

chills42

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