Cannot appendChild of "null"?

So I’m trying to make it so that when a user presses the “send” button, the text typed into the input “messageInput” will appear in a new

element inside the div “content”.

(js)

document.getElementById(“send”).onclick = function() {
var message = document.getElementById(“messageInput”).value;
if (message == “”) {

// nothing 

} else {
var message = document.getElementById(“messageInput”).value;
var para = document.createElement(“p”);
var node = document.createTextNode(message);
para.appendChild(node);
var element = document.getElementById(“content”);
element.appendChild(para);
}
}

I took this code from w3schools so I’m unsure why there’s an error. The error is basically “Uncaught TypeError: Cannot read property ‘appendChild’ of null”. The error occurs at the line “element.appendChild(para)”.
Alright, sorry if this was a repeat, it didn’t seem to be one when I checked, and apologies if my error is extremely obvious. Thanks in advance.

Hey @penguinlino its a little difficult to fully debug this without your html but looks like document.getElementById(“content”) is returning null, are you sure that there is an element in your html with id “content”?

1 Like

Wrap your code in a window.onload function, or move the script tag to the bottom of the page. Also make sure that an element with the id “content” exists.

2 Likes

You should probably put it on the bottom of <body> because head scripts can be weird at times

ah I checked again, thanks for reminding me. I got class confused with id, so apologies for the stupid mistake. but anyways thanks!

1 Like

no worries! glad you sorted it out :slight_smile:

1 Like