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Using jQuery.data to store a list of items

I am working on a page where I need to associate a list of objects with a table row, and I use jQuery.

jQuery.data seems to just bind a piece of data to a key, whereas I like it more

id=4,setting=2
id=3,setting=1
...

I do not know how long the list can be, and it can be empty.

Is there any reasonable way to do this?

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3 answers

You can store anything as jQuery data, so you can do this:

var myData = [ { id: 4, setting: 2 }, [ id:3, setting:1 ] };

$("#myitem").data("mydata", myData);

If you want to select something by id, you can do this:

var myData = {};

myData[4] = 2;
myData[3] = 1;

$("#myitem").data("mydata", myData);

Then you can access your settings as follows:

var value = $("#myitem").data("mydata")[3]; // returns 1
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, , , , ?

jquery...

$("div").data("blah", {id: 4,setting: 2});
var myBlah = $("div").data("blah");
var id = myBlah["id"];
var setting = myBlah["setting"];

, .

+1

You can use arrays to store lists and JSON objects to store key-value pairs.

<div id="DIV1"></div>
<div id="DIV2"></div>
<div id="DIV3"></div>
<div id="DIV4"></div>
<table><tbody><tr id="TR1"><td><td/></tr></tbody></table>
<script type="text/javascript">
$(function() {
    $("#TR1").data("blah", [{id: 4, setting: 2}, {id: 3, setting: 1}]);
    $("#DIV1").text($("#TR1").data("blah")[0].id);
    $("#DIV2").text($("#TR1").data("blah")[0].setting);
    $("#DIV3").text($("#TR1").data("blah")[1].id);
    $("#DIV4").text($("#TR1").data("blah")[1].setting);
});
</script>
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