Calculating text width

Question

I\'m trying to calculate text width using jQuery. I\'m not sure what, but I am definitely doing something wrong.

So, here is the code:

var c = $(\'.c         


        

Answer 1

Here's a function that's better than others posted because

1. it's shorter
2. it works when passing an , , or "string".
3. it's faster for frequent uses because it reuses an existing DOM element.

Demo: http://jsfiddle.net/philfreo/MqM76/

// Calculate width of text from DOM element or string. By Phil Freo 
$.fn.textWidth = function(text, font) {
    if (!$.fn.textWidth.fakeEl) $.fn.textWidth.fakeEl = $('').hide().appendTo(document.body);
    $.fn.textWidth.fakeEl.text(text || this.val() || this.text()).css('font', font || this.css('font'));
    return $.fn.textWidth.fakeEl.width();
};