<p>该范例使用 addEventListener() 方法在按钮中添加多个事件</p>

<button id="myBtn">点我</button>

<p id="demo"></p>

<script>

var x = document.getElementById("myBtn");

x.addEventListener("mouseover", myFunction);

x.addEventListener("click", mySecondFunction);

x.addEventListener("mouseout", myThirdFunction);

function myFunction()

{

    document.getElementById("demo").innerHTML += "鼠标经过!<br>"

}

function mySecondFunction()

{

    document.getElementById("demo").innerHTML += "点击!<br>"

}

function myThirdFunction()

{