javascript 阻止事件冒泡
event.stopPropagation() 阻止事件冒泡
event.preventDefault() 阻止事件的默认动作
<!DOCTYPE html><html><head> <script src="http://code.jquery.com/jquery-latest.js"></script></head><body> <a href="http://jquery.com">default click action is prevented</a><div id="log"></div><script>$("a").click(function(event) { event.preventDefault(); $('<div/>') .append('default ' + event.type + ' prevented') .appendTo('#log');});</script></body></html>??