html选中区域判断

getSelectionHTML : function() {
		var userSelection;
		if (window.getSelection) {
			// W3C Ranges
			userSelection = window.getSelection();
			// Get the range:
			if (userSelection.getRangeAt)
				var range = userSelection.getRangeAt(0);
			else {
				var range = document.createRange();
				range.setStart(userSelection.anchorNode,
						userSelection.anchorOffset);
				range
						.setEnd(userSelection.focusNode,
								userSelection.focusOffset);
			}
			// And the HTML:
			var clonedSelection = range.cloneContents();
			var div = document.createElement('div');
			div.appendChild(clonedSelection);
			return div.innerHTML;
		} else if (document.selection) {
			// Explorer selection, return the HTML
			userSelection = document.selection.createRange();
			return userSelection.htmlText;
		} else {
			return '';
		}
	}

 

转自：http://snipplr.com/view/10912/get-html-of-selection/