CODEWITHSUNDEEP
javascriptgetelementbyidappendchildcreateelement
Wez
Wez

Reputation: 10712

Javascript Append Child AFTER Element

I would like to append an li element after another li inside a ul element using javascript, This is the code I have so far..

var parentGuest = document.getElementById("one");
var childGuest = document.createElement("li");
childGuest.id = "two";

I am familiar with appendChild,

parentGuest.appendChild(childGuest);

However this appends the new element inside the other, and not after. How can I append the new element after the existing one? Thanks.

<ul>
  <li id="one"><!-- where the new li is being put --></li>
  <!-- where I want the new li -->
</ul>

Upvotes: 85

Views: 133397

Answers (7)

Jonathan Applebaum
Jonathan Applebaum

Reputation: 5986

Use the parent element children array.
In the example below we are adding a new element after the first child element (hence we will insert the new element before the element in index 1):

parentElement.insertBefore(newElement, parentElement.children[1]);

Upvotes: 3

Sagar V
Sagar V

Reputation: 12478

after is now a JavaScript method

MDN Documentation

Quoting MDN

The ChildNode.after() method inserts a set of Node or DOMString objects in the children list of this ChildNode's parent, just after this ChildNode. DOMString objects are inserted as equivalent Text nodes.

The browser support is Chrome(54+), Firefox(49+) and Opera(39+). It doesn't support IE and Edge.

Snippet

var elm=document.getElementById('div1');
var elm1 = document.createElement('p');
var elm2 = elm1.cloneNode();
elm.append(elm1,elm2);

//added 2 paragraphs
elm1.after("This is sample text");
//added a text content
elm1.after(document.createElement("span"));
//added an element
console.log(elm.innerHTML);
<div id="div1"></div>

In the snippet, I used another term append too

Upvotes: 6

Meligy
Meligy

Reputation: 36594

If you are looking for a plain JS solution, then you just use insertBefore() against nextSibling.

Something like:

parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling);

Note that default value of nextSibling is null, so, you don't need to do anything special for that.

Update: You don't even need the if checking presence of parentGuest.nextSibling like the currently accepted answer does, because if there's no next sibling, it will return null, and passing null to the 2nd argument of insertBefore() means: append at the end.

Reference:

.

IF you are using jQuery (ignore otherwise, I have stated plain JS answer above), you can leverage the convenient after() method:

$("#one").after("<li id='two'>");

Reference:

Upvotes: 20

vitalikaz
vitalikaz

Reputation: 578

You need to append the new element to existing element's parent before element's next sibling. Like:

var parentGuest = document.getElementById("one");
var childGuest = document.createElement("li");
childGuest.id = "two";
parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling);

Or if you want just append it, then:

var parentGuest = document.getElementById("one"); 
var childGuest = document.createElement("li"); 
childGuest.id = "two"; 
parentGuest.parentNode.appendChild(childGuest);

Upvotes: 18

nathnolt
nathnolt

Reputation: 535

You could also do

function insertAfter(node1, node2) {
    node1.outerHTML += node2.outerHTML;
}

or

function insertAfter2(node1, node2) {
    var wrap = document.createElement("div");
    wrap.appendChild(node2.cloneNode(true));
    var node2Html = wrap.innerHTML;
    node1.insertAdjacentHTML('afterend', node2Html);
}

Upvotes: 1

Yoshi
Yoshi

Reputation: 54649

You can use:

if (parentGuest.nextSibling) {
  parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling);
}
else {
  parentGuest.parentNode.appendChild(childGuest);
}

But as Pavel pointed out, the referenceElement can be null/undefined, and if so, insertBefore behaves just like appendChild. So the following is equivalent to the above:

parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling);

Upvotes: 119

HBP
HBP

Reputation: 16033

This suffices :

 parentGuest.parentNode.insertBefore(childGuest, parentGuest.nextSibling || null);

since if the refnode (second parameter) is null, a regular appendChild is performed. see here : http://reference.sitepoint.com/javascript/Node/insertBefore

Actually I doubt that the || null is required, try it and see.

Upvotes: 1

Related Questions