Question

Let’s say I have an array of objects

[{href: 'some_uri', 'class': 'this-css-class'}, {href: 'another_uri', 'class': 'that-css-class'}]

I now want to map that to a html list:

<ul>
  <li class="this-css-class"><a href="some_uri">some_uri</a></li>
  <li class="that-css-class"><a href="another_uri">another_uri</a></li>
</ul>

Assume I add another object to my array, I want to have a new <li> added to the list as well. Conversely, when I $('.that-css-class').remove() one of the list items, I want it to be gone in the array as well.

I would like to keep it in jQuery, as I don’t want to introduce another framework to the project.

Help greatly appreciated, this has been doing my head in.
Thanks.

Answer 1

Something like that ? : http://jsfiddle.net/RZPNG/4/

var datas = [
    {href: 'some_uri', 'class': 'this-css-class'}, 
    {href: 'another_uri', 'class': 'that-css-class'}
],
  ul = $('ul');

$.each(datas, function(key, value) { // initialize list
    createElement(value);
});

function createElement(elem) {
    ul.append($('<li class=' + elem.class + '><a href="' + elem.href + '">' + elem.href + '</a></li>'));
}

function addElement(elem) {
    datas.push(elem);
    createElement(elem);
}

function removeElement(i) {
    datas.splice(i, 1);
    $(ul.find('li').get(i)).remove();
}

addElement({href: 'foo', 'class': 'bar'});
removeElement(1);

Selector way :

var datas = [
    {href: 'some_uri', 'class': 'this-css-class'}, 
    {href: 'another_uri', 'class': 'that-css-class'}
],
  ul = $('ul');

$.each(datas, function(key, value) { // initialize list
    createElement(value);
});

function createElement(elem) {
    ul.append($('<li class=' + elem.class + '><a href="' + elem.href + '">' + elem.href + '</a></li>'));
}

function addElement(elem) {
    datas.push(elem);
    createElement(elem);
}

function removeElement(selector) {
    datas.splice(findElement(selector), 1);
    $(ul.find('li.' + selector)).remove();
}

function findElement(selector) {
    for (var i in datas) {
        if (datas[i].class === selector) {
           return i;   
        }
    }                
}

addElement({href: 'foo', 'class': 'bar'});
removeElement('that-css-class');