JS 登记监听

JS 注册监听

<div id ="testdiv">div </div><script>var inputElem = document.createElement("input"); //创建组建inputElem.name = "name";inputElem.type = "checkbox";inputElem.checked = "true";inputElem.onclick=myfun;          //注册监听事件，监听函数为myfunvar labelSpan = document.createElement("span"); var br = document.createElement("br");alert(document.getElementById("testdiv"));document.getElementById('testdiv').appendChild(inputElem); function myfun(){    alert("ok");}</script>