如何清除Enter或换行符（html / javascript）的文本框？

Question

I've created a simple online chat room using HTML, JavaScript and CSS. Anyway, I recently added a feature to automatically submit the message upon the enter key being pressed. But whenever I do this, the value of the text box has a new line in it.

Here's an example...
Before submitting a message

document.getElementById("send").value;

""
After submitting a message

document.getElementById("send").value;

"
"
Any help would be appreciated, thanks :)

Answer 1

If you want to completely remove them

var UserInput = document.getElementById("send").value
UserInput = UserInput.replace(/(?:\r\n|\r|\n)/g, '');

The replace function checks the string for returns and new lines using a regular expression, when it finds one, it replaces it with "", or nothing.

Hope this helps you