Uncaught TypeError: Failed to execute ‘appendChild’ on ‘Node’: parameter 1 is not of type ‘Node’.
In summation, the issue was that I didn’t create a node using
document.createElementbefore I used the appendChild function. The code below will show you what I was doing to throw the error and what I did to fix it.
The Below Code Doesn’t Work
I could have sworn that I was using appendChild properly but, alas, I wasn’t. Instead of passing a node to appendChild, I was passing a string.
var link = '<a class="wplauncher-link"> Example Link </a>'; var body = document.getElementsByTagName('body').appendChild(link);
The Below Code Works
Instead, I should have created the link element first, added HTML to it, and then run appendChild. This is illustrated in the code below, which WORKS:
var link = document.createElement('a'); link.className = 'wplauncher-link'; link.innerHTML = 'Example Link'; document.body.appendChild(link);
If you need to add a string of HTML that is more complex than a link, I suggest using the insertAdjacentHTML method. An example of this is visible below:
var link = '<a class="wplauncher-link"> Example Link </a>'; document.body.insertAdjacentHTML('beforeend',link);