INPUT TEXT SELECTION CODE SNIPPETS

gistfile1.js

// GET CURSOR POSITION
jQuery.fn.getCursorPosition = function() {
	if (this.lengh == 0) return -1;
	return $(this).getSelectionStart();
}



//Set Text Selection
jQuery.fn.getSelectionStart = function() {
	if (this.lengh == 0) return -1;
	input = this[0];



	var pos = input.value.length;



	if (input.createTextRange) {
		var r = document.selection.createRange().duplicate();
		r.moveEnd('character', input.value.length);
		if (r.text == '')
			pos = input.value.length;
		pos = input.value.lastIndexOf(r.text);
	} else if (typeof(input.selectionStart) != "undefined")
		pos = input.selectionStart;



	return pos;
}



//SET CURSOR POSITION
jQuery.fn.setCursorPosition = function(pos) {
	this.each(function(index, elem) {
		if (elem.setSelectionRange) {
			elem.setSelectionRange(pos, pos);
		} else if (elem.createTextRange) {
			var range = elem.createTextRange();
			range.collapse(true);
			range.moveEnd('character', pos);
			range.moveStart('character', pos);
			range.select();
		}
	});
	return this;
};



//different version of SET CURSOR POSITION function above
function setCursorPos(node, pos) {



	var node = (typeof node == "string" || node instanceof String) ? document.getElementById(node) : node;
	node.focus(); //crucial for firefox



	if (!node) {
		return false;
	} else if (node.createTextRange) {
		var textRange = node.createTextRange();
		textRange.collapse(true);
		// textRange.moveEnd(pos); //see api textRange requires 2 params
		// textRange.moveStart(pos);
		textRange.moveStart('character', pos);
		textRange.moveEnd('character', 0);
		// console.log('textRange...');
		textRange.select();
		return true;
	} else if (node.setSelectionRange) {
		node.setSelectionRange(pos, pos);
		// console.log('setSelectionRange...');
		return true;
	}



	return false;
}