js最常用的click事件3种方法

1、onclick=name()

<!DOCTYPE html>
<html leng="en">
    <head>
        <meta charset="utf-8">
        <title>one</title>
    </head>
    <body>
        <div id="dome"></div>
        <button type="button" onclick="displayDate()">点击</button>
        <script>
            function displayDate(){
                document.getElementById("dome").innerHTML=Date();
            }
        </script>
    </body>
</html>

2、js中绑定

<!DOCTYPE html>
<html leng="en">
    <head>
        <meta charset="utf-8">
        <title>one</title>
    </head>
    <body>
        <div id="dome"></div>
        <button type="button">点击</button>
        <script>
            var btn=document.getElementById("btn");
            btn.onclick=function(){
                document.getElementById("dome").innerHTML=Date();
            }
        </script>
    </body>
</html>

3、事件柄方法

//addEventListener 用于向指定元素添加事件句柄
//可以向一个元素添加多次点击事件，后一个点击事件不会覆盖前一个点击事件
<!DOCTYPE html>
<html leng="en">
    <head>
        <meta charset="utf-8">
        <title>one</title>
    </head>
    <body>
        <div id="dome"></div>
        <button type="button">点击</button>
        <script>
            var btn=document.getElementById("btn");
            btn.addEventListener('click',function(){
                document.getElementById("dome").innerHTML=Date();
            },false)
        </script>
    </body>
</html>