jQuery - select all text from a textarea

问题

How can I make it so when you click inside a textarea, its entire content gets selected?

And eventually when you click again, to deselect it.

回答1:

To stop the user from getting annoyed when the whole text gets selected every time they try to move the caret using their mouse, you should do this using the focus event, not the click event. The following will do the job and works around a problem in Chrome that prevents the simplest version (i.e. just calling the textarea's select() method in a focus event handler) from working.

jsFiddle: http://jsfiddle.net/NM62A/

Code:

<textarea id="foo">Some text</textarea>

<script type="text/javascript">
    var textBox = document.getElementById("foo");
    textBox.onfocus = function() {
        textBox.select();

        // Work around Chrome's little problem
        textBox.onmouseup = function() {
            // Prevent further mouseup intervention
            textBox.onmouseup = null;
            return false;
        };
    };
</script>

jQuery version:

$("#foo").focus(function() {
    var $this = $(this);
    $this.select();

    // Work around Chrome's little problem
    $this.mouseup(function() {
        // Prevent further mouseup intervention
        $this.unbind("mouseup");
        return false;
    });
});

回答2:

Better way, with solution to tab and chrome problem and new jquery way

$("#element").on("focus keyup", function(e){

        var keycode = e.keyCode ? e.keyCode : e.which ? e.which : e.charCode;
        if(keycode === 9 || !keycode){
            // Hacemos select
            var $this = $(this);
            $this.select();

            // Para Chrome's que da problema
            $this.on("mouseup", function() {
                // Unbindeamos el mouseup
                $this.off("mouseup");
                return false;
            });
        }
    });

回答3:

I ended up using this:

$('.selectAll').toggle(function() {
  $(this).select();
}, function() {
  $(this).unselect();
});

回答4:

Slightly shorter jQuery version:

$('your-element').focus(function(e) {
  e.target.select();
  jQuery(e.target).one('mouseup', function(e) {
    e.preventDefault();
  });
});

It handles the Chrome corner case correctly. See http://jsfiddle.net/Ztyx/XMkwm/ for an example.

回答5:

$('textarea').focus(function() {
    this.select();
}).mouseup(function() {
    return false;
});

回答6:

Selecting text in an element (akin to highlighting with your mouse)

Using the accepted answer on that post, you can call the function like this:

$(function() {
  $('#textareaId').click(function() {
    SelectText('#textareaId');
  });
});

来源：https://stackoverflow.com/questions/5797539/jquery-select-all-text-from-a-textarea

标签

javascript

jquery

forms

textarea

selection