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>
时间： 2024-08-09 06:25:37