Js classic case code analysis-JS Tutorial-php.cn

Js classic case code analysis

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Release： 2018-05-22 11:32:09

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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>

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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>

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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>

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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!