html - jQuery Get Position of Character in a Div?

Question

Hi Guys [and girls] :)

Just wondering whether it's possible to get the absolute positiong of a character within a div ?

<div class="mycooldiv">
    bunch of text is in here and for example some # and some other cool #
</div>

i.e. using jQuery UI Position perhaps or otherwise - how would I get for example the position of # ?

Answer 1

If your element only contains text, you can wrap the character in an inline element, and get the position of the element using .offset(). Then, place the original text back. Fiddle: http://jsfiddle.net/Dp6JR/

var $elem = $('.mycooldiv');
var text = $elem.html();
var newText = text.replace(/#/, '<span class="get-position-of-it"></span>');
$elem.html(newText); //Set wrapper
var offset = $(".get-position-of-it").offset();
$elem.html(text)    ; //Place back
var topPos = offset.top;
var left = offset.left;

Note: This function gets the position of the first found # character. If you want to get the position of all characters, add g to the Regular expression (/#/g).

Getting all positions - Fiddle: http://jsfiddle.net/Dp6JR/1/

The offsets of all characters will be stored in a 2-dimensional array (matrix).

var positions = [];
var $elem = $('.mycooldiv');
var text = $elem.html();
var newText = text.replace(/#/g, '<span class="get-position-of-it"></span>');
$elem.html(newText); //Set wrapper
$(".get-position-of-it").each(function(){
    var offset = $(this).offset();
    positions.push([offset.left, offset.top]);
});
$elem.html(text)    ; //Place back
//`positions` is an array of all offset information

The output can be equivalent to:

var positions = [
    [0, 0],
    [100, 0]
];