I have to embed some tracking code on my site. So I have a list of LI elements with an ID value that I want to place inside an array of the snippet. They should be numeric like, 123, 456, etc inside an object. I want to do it in pure JavaScript.
This is my code I have tried. My HTML:
<ul id="itemGrid">
<li class="item" id="1080"> product code </li>
<li class="item" id="1487"> product code </li>
<li class="item" id="1488"> product code </li>
...
</ul>
This is the JavaScript code
// Get all LI items and get the ID of them in the object viewList
var catId = document.getElementById('itemGrid').getElementsByTagName('li');
window.criteo_q = window.criteo_q || [];
window.criteo_q.push(
// SHOULD BE LIKE THIS
// { event: "viewList", item: ["First item id", "Second item id", "Third item id"] }
// My actual code
{ event: "viewList", item: [ catId[].id ] }
);
You can use querySelectorAll to select all the matching elements passed as selector.
The selector '#itemGrid li[id]' will select all the <li> elements inside #itemGrid element having id attribute on it.
The querySelectorAll returns a collection of HTML elements. Iterate over this collection to get the individual element id.
var lis = document.querySelectorAll('#itemGrid li[id]');
var arr = [];
for (var i = 0; i < lis.length; i++) {
arr.push(+lis[i].id);
}
console.log(arr);
document.write('<pre>' + JSON.stringify(arr, 0, 4) + '</pre>');<ul id="itemGrid">
<li class="item" id="1080">1080</li>
<li class="item" id="1487">1487</li>
<li class="item" id="1488">1488</li>
</ul>
<hr />Collected from the Internet
Please contact [email protected] to delete if infringement.
Comments