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Js classic case code analysis

php中世界最好的语言Original: 2018-05-22 11:32:091609browse

This time I will bring you Js classic case code analysis. What are the precautions for Js classic case code analysis? . The following is a practical case, let’s take a look.

Mouseover to switch pictures:

<html>
<head>
<script type="text/javascript">
function mouseOver()
{
document.getElementById('b1').src ="diaochan.jpg"
}
function mouseOut()
{
document.getElementById('b1').src ="noimage.gif"
}
</script>
</head>
<body>
<a href="#" 
onmouseover="mouseOver()" onmouseout="mouseOut()">
<img alt="Visit W3School!" src="noimage.gif" id="b1" onmouseover="alert(&#39;你的鼠标在图片上！&#39;)")/>
</a>
</body>
</html>

js displayWeather forecast:

<html>
<head><title></title>
<script type="text/javascript">
</script>
</head>
<body >
<p>
<iframe src="http://m.weather.com.cn/m/pn11/weather.htm" width="480" height="70" frameborder="1"></iframe>
</p>
</body>
</html>

js uses focus to select websites:

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title></title>
 <script type="text/javascript">
  var i = 1;
  var focusid;
  function defau() {
   document.getElementById('1').focus();
   focusid=1;
  }
  function showtable() {
   var id = i + 1;
   document.getElementById(id).focus();
   focusid=id;
   i++;
   if (i == 4) {
    i = 0;
   }
  }
  function openhref() {
   var href = document.getElementById(focusid).href;
   document.location = href;
  }
 </script>
</head>
<body onload="defau()">
<a href="http://www.baidu.com/" id="1">百度</a>
<a href="http://www.google.com.hk/" id="2">谷歌</a>
<a href="http://www.youku.com/" id="3">优酷</a>
<a href="http://www.tudou.com/" id="4">土豆</a>
 <input id="Button1" type="button" value="选择" onclick="showtable()" /><br />
 <input id="Button2" type="button" value="进入" onclick="openhref()" />
</body>
</html>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the PHP Chinese website!

Js classic case code analysis

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