How can I only allow shift+enter to return new line in text area?

问题

In a default behavior, the textarea "press" enter will become new line, but I don't want to having a new line, I want the user press "shift+enter", instead. How can I do so? or... ...can I return the textarea enter event before it actually fire to the text area?? Thank you.

回答1:

$("textarea").keydown(function(e){
    // Enter was pressed without shift key
    if (e.keyCode == 13 && !e.shiftKey)
    {
        // prevent default behavior
        e.preventDefault();
    }
});

Try the jsFiddle.

来源：https://stackoverflow.com/questions/5842813/how-can-i-only-allow-shiftenter-to-return-new-line-in-text-area