Question

I would like to select the text of the input field which currently has focus, so when the user starts typing, the text which is currently in the input field is gone. Can I do this with javascript (or jquery)?

In case the field which currently has focus is not an input field, nothing has to happen.

thanks!

EDIT:
To all the answerers: you all misunderstood (so probably my question was not clear).
I don’t want to select the text on the moment the input field gets the focus. I would like to have a javascript function which selects the text of the input field which has the focus at that moment.

Answer 1

Sorry I misunderstood what you were looking for I think that I have a better understanding of it now. Does this do more of what you were looking to acheive?

//If not using 1.7 for jquery you can use bind
$('input, textarea').on({
    focusin: function(){
        $(this).addClass("focused");
    },
    focusout: function(){
        $(this).removeClass("focused");
    }
});

function highlightText()
{
    var focused = $('input.focused,textarea.focused');

    if (focused.size()) {
        focused.get(0).select();   
    }
}

http://jsfiddle.net/GXFpR/1/