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Store and use an array using the HTML data tag and jQuery

Posted by: admin November 29, 2017 Leave a comment

Questions:

I am attempting to store an array in the HTML data tag. For example:

<div data-locs="{'name':'London','url':'/lon/'},{'name':'Leeds','url':'/lds'}">

I am accessing that data using jQuery. I realise that this is stored as a string, and I’ve tried various methods to convert it to an array, but I’ve hit a wall. If you take a look at this jsFiddle page you’ll see a full example of what I’m trying to do.

http://jsfiddle.net/B4vFQ/

Any ideas?

Thanks!

Answers:

If you use valid JSON ([ and ] for the array, double quotes instead of single), like this:

<div id="locations" data-locations='[{"name":"Bath","url":"/location/bath","img":"/thumb.jpg"},{"name":"Berkhamsted","url":"/location/berkhamsted","img":"/thumb.jpg"}]'>

Then what you have (using .data()) to get the array will work:

$('#locations').data('locations');

You can test it here.

Questions:
Answers:

Try adding [ and ] to beginning and end (this makes it valid JSON). After doing so, you can use JSON.parse() to convert it to a native JavaScript object.

Questions:
Answers:

Try this:

var testOne = eval("new Array(" + $('#locations').data('locations') + ")");

Look at it in jsfiddle.