jquery - how to set and retrieve values from array stored using data()

Question

I'm trying to create an array, assign it to a div-element, push() a value and retrieve it again at a later stage.

Can someone tell me, what I'm missing...:

// set Array
// $(this) is the HTML-element which should get array assigned
var stack = [],
    stack.push('#'+$(this).find(':jqmData(role="page")').attr('id')),

$(this).data( stack );

Using

console.log( $(this).data(stack) );

I'm getting back the whole HTML element, while

console.log( $(this).data(stack[0] OR stack.length) );

don't work.

How can I access the elements that I (presumably...) pushed into the array?

Alex Turpin · Accepted Answer · 2011-10-19 14:18:28Z

3

You need to name your data. For example:

$("div").data("stack", []); //This sets the data key "stack" to an empty array
$("div").data("stack").push(123); //This retrieves the array and pushes a number to the array
console.log($("div").data("stack")); //This prints the array

answered Oct 19, 2011 at 14:18

Alex Turpin

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Comments

John Strickler · Accepted Answer · 2011-10-19 14:16:50Z

1

To assign data to an element you have to give it a key to index by.

PUT

$(this).data('stack', stack);

GET

var stack = $(this).data('stack');

answered Oct 19, 2011 at 14:16

John Strickler

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Comments

aziz punjani · Accepted Answer · 2011-10-19 18:42:44Z

0

Data takes a key, value pair. You're not passing in the key.

$(this).data('stack', stack );

Then to retrieve it:

$(this).data('stack');

edited Oct 19, 2011 at 18:42

answered Oct 19, 2011 at 14:17

aziz punjani

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