Dynamically create an array in Javascript

Question

I have an ajax request that returns some JSON formatted data. I'm building out a Google Maps display with it so I need to take that data and pass it to a few variables. So I want to build an array like:

var foo = [
    ['A Town', 32.844932, -50.886401, 1, setting1, '<div class="office"><div class="name">Smith</div><div class="location">111 Main Street<br /> Breen, MS<br /> 12345</div><div class="size">18 units<br />300 Foo</div><div class="thelink"><a href="#">Visit</a><br /><a href="#">Output</a></div></div>'],
    ['B Town', 33.844932, -51.886401, 2, setting1, '<div class="office"><div class="name">Jones</div><div class="location">112 Main Street<br /> Breen, MS<br /> 12345</div><div class="size">18 units<br />300 Foo</div><div class="thelink"><a href="#">Visit</a><br /><a href="#">Output</a></div></div>'],
[etc], 
[etc]
    ];

That I can then use to render my google maps locations. I have the JSON data so how do I loop through it and build out such an array? Or is there a better way to do it that I am missing (which is what I suspect, lol)?

Skilldrick · Accepted Answer · 2010-10-01 16:08:45Z

9

Just do:

var foo = [];
for (/*loop*/) {
    foo.push(['this is a new array', 'with dynamic stuff']);
}

answered Oct 1, 2010 at 16:08

Skilldrick

71.1k37 gold badges182 silver badges231 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Robusto · Accepted Answer · 2010-10-01 16:40:01Z

4

In addition to Array.push(), you can also assign values directly to Array indices. For example,

var foo = [];

foo[0] = "Foo 0";
foo[19] = "Bob";

This will give you a sparse array with a length of 20 and values in elements 0 and 19.

edited Oct 1, 2010 at 16:40

answered Oct 1, 2010 at 16:12

Robusto

32k8 gold badges59 silver badges79 bronze badges

1 Comment

Lothar Over a year ago

谢谢，Robusto. I appreciate the extra way to do it.

Alex Wayne · Accepted Answer · 2010-10-01 16:09:14Z

2

You can use the push function on Array objects to build them dynamically.

var a = [];
var b = [1,2,3,4,5,6,7,8,9];

for (var i=0; i<b.length; i++) {
  a.push(b[i]);
}

answered Oct 1, 2010 at 16:09

Alex Wayne

188k52 gold badges328 silver badges363 bronze badges

Collectives™ on Stack Overflow

Dynamically create an array in Javascript

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related