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天天代码

2024-08-26 22:01:04   222人阅读

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Document</title>
 6     <script type="text/javascript">
 7         window.onload = function(){
 8             var btn_obj = document.getElementById("yc");
 9             btn_obj.onclick = function(){
10                 var div_obj = document.getElementsByTagName(‘div‘)[0];
11                 if (div_obj.style.display == "none") {
12                     div_obj.style.display = "block";
13                 }else {
14                     div_obj.style.display = "none";
15                 }
16             }
17         }
18         var wd;
19         function op () {
20              var url    = "满天星案例.html";
21              var names  = "打开电脑中的网页";
22              var option = "width=300,height=300";
23              wd = window.open(url,names,option);
24         }
25         function cl () {
26             window.close();  
27         }
28         
29     </script>
30 </head>
31 <body>
32     <div style="width:200px; height:200px; background-color:#0f0; display:none;"></div>
33     <button id="yc">显示或隐藏</button>
34     <button onclick="cl()">关闭窗口</button>
35     <button onclick="op()">打开新窗口</button>
36 </body>
37 </html>
 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Document</title>
 6     <style class="text/css">
 7         div{
 8             border: 1px solid #f00;
 9         }
10     </style>
11     <script type="text/javascript">
12         //createTagName 在后面添加一个新的标签
13         function createTagName(){
14             //node 节点
15             var img_node = document.createElement("img");
16             //把创建的标签追加到body标签里面去
17             //appendChild(要追加的标签对象)
18             document.body.appendChild(img_node);
19             img_node.setAttribute("src","images/en.jpg");
20         }
21 
22     </script>
23 </head>
24 <body>
25     <button onclick="createTagName()">创建标签</button>
26 </body>
27 </html>
 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Document</title>
 6     <script type="text/javascript">
 7         window.onload = function(){
 8             setInterval("createImg()",1000);
 9         }
10         var img_min_width = 15;
11         var img_max_width = 90;
12 
13         var X_left = 0;
14         var x_right = window.innerWidth-img_max_width;
15         var y_top = 0;
16         var y_bottom = window.innerHeight-img_max_width;
17 
18 
19 
20         function createImg () {
21             var img_node = document.createElement("img");
22             img_node.setAttribute("src","images/xingxing.gif");
23             document.body.appendChild(img_node);
24             img_node.setAttribute("width",getRandom(img_min_width,img_max_width));
25             var x = getRandom(x_right,X_left);
26             var y = getRandom(y_bottom,y_top);
27             img_node.setAttribute("style","position:absolute;left:"+x+"px;top:"+y+"px;");
28             img_node.setAttribute("onclick","removeImg(this)");
29         }
30 
31         function getRandom (max,min) {
32               return Math.floor(Math.random()*(max-min+1)+min);
33         }
34         function removeImg(obj){
35             obj.parentNode.removeChild(obj);
36         }
37     </script>
38 </head>
39 <body>
40     
41 </body>
42 </html>

 

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