在文本区域上按Enter键时如何提交表单？

Question

I want to submit the content in the textarea as shown below by just hitting the Enter key on any keyboard on planet earth. When the user hits the Shift+Enter key, the caret has to go to a new line and on hitting Enter the submitted textarea content should have the new lines created when the Shift+Enter was pressed. The content of the textarea should be inserted after the the div with class commentWrap but the last submitted comment should apear last and vice verser.

I want this solution to work in all browsers.

<div class="commentWrap"></div>

<textarea id="test"></textarea>

<script type="text/javascript">
    $(document).ready(function() {
        $("#test").keypress(function(e) {
            var textVal = $(this).val();
            if(e.which == 13 && e.shiftKey) {
                //What should I really do here
            }
            else if (e.which == 13 && ! e.shiftKey) {
                e.preventDefault(); //Stops enter from creating a new line
                //this.form.submit(); //or ajax submit
                if (this.value ==="") {
                    alert("Hey punk! Put some text before you hit enter.");
                }else {
                    alert(textVal);
                    $("<div class='comment'>"+ textVal +"</div>").insertAfter('.commentWrap');
                }
            }
        });
    });
</script>

Answer 1

//What should I really do here

Nothing I think, all browsers will insert a new line if shift + enter was pressed so you can just return true;

Answer 2

如果您已经具有用于提交表单的提交按钮，则只需触发点击处理程序即可。

    $("#submitButton").click();