How Can I Prevent Form Submission on Shift Enter in a Text Area?

Shift Enter in TextArea: Generating a New Line

When users press the Enter key inside a text area, submitting the form is the expected behavior. However, if Shift is pressed in combination with Enter, it's often desirable to move the caret to a new line rather than submit the form.

Solution:

There are two primary solutions to this issue:

1. Modify Existing Code:

If there's an existing script that causes Enter to submit the form, modify it to check for the Shift key. Here's an example:

if (evt.keyCode == 13 && !evt.shiftKey) {
    form.submit();
}

2. Use JavaScript and jQuery:

If you don't have access to the existing code, implement this solution using JavaScript and jQuery:

$("#your_textarea_id").keydown(function(evt) {
    if (evt.keyCode == 13 && evt.shiftKey) {
        pasteIntoInput(this, "\n");
        evt.preventDefault();
    }
}).keypress(function(evt) {
    if (evt.keyCode == 13 && evt.shiftKey) {
        pasteIntoInput(this, "\n");
        evt.preventDefault();
    }
});

This code will insert a newline character (n) into the textarea when Shift Enter is pressed, preventing the form from submitting.

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