如果你处在局域网的内网中,想获取你的外网IP地址。这里有一个使用Javascript调用ip138获取外网IP的方法,十分简单,代码如下:

 

JavaScript代码
  1. <script language="javascript">      
  2. xml=new ActiveXObject("Microsoft.XMLHTTP");      
  3. xml.open("GET","http://www.ip138.com/ip2city.asp",false);      
  4. xml.send();      
  5. kk=xml.ResponseText;      
  6. i=kk.indexOf("[");      
  7. ie=kk.indexOf("]");      
  8. ip=kk.substring(i+1,ie);      
  9. document.write("<span style=‘color:red;font-size:12;‘ cursor=‘hand‘>您的IP地址是:" + ip + "</span>");      
  10. </script>  

 

1 创建脚本块
<script language=”JavaScript”>
JavaScript 代码写在这里面
</script>

2 隐藏脚本代码
<script language=”JavaScript”>
<!–
document.write(“Hello”);
// –>
</script>
在不支持JavaScript的浏览器中将不执行相关代码

3 浏览器不支持的时候显示
<noscript>
Hello to the non-JavaScript browser.
</noscript>

4 链接外部脚本文件
<script language=”JavaScript” src="/”filename.js"”></script>

5 注释脚本
// This is a comment
document.write(“Hello”); // This is a comment
/*
All of this
is a comment
*/

6 输出到浏览器
document.write(“<strong>Hello</strong>”);

7 定义变量
var myVariable = “some value”;

8 字符串相加
var myString = “String1” + “String2”;

9 字符串搜索
<script language=”JavaScript”>
<!–
var myVariable = “Hello there”;
var therePlace = myVariable.search(“there”);
document.write(therePlace);
// –>
</script>

10 字符串替换
thisVar.replace(“Monday”,”Friday”);

11 格式化字串
<script language=”JavaScript”>
<!–
var myVariable = “Hello there”;
document.write(myVariable.big() + “<br>”);
document.write(myVariable.blink() + “<br>”);
document.write(myVariable.bold() + “<br>”);
document.write(myVariable.fixed() + “<br>”);
document.write(myVariable.fontcolor(“red”) + “<br>”);
document.write(myVariable.fontsize(“18pt”) + “<br>”);
document.write(myVariable.italics() + “<br>”);
document.write(myVariable.small() + “<br>”);
document.write(myVariable.strike() + “<br>”);
document.write(myVariable.sub() + “<br>”);
document.write(myVariable.sup() + “<br>”);
document.write(myVariable.toLowerCase() + “<br>”);
document.write(myVariable.toUpperCase() + “<br>”);
var firstString = “My String”;
var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
// –>
</script>

12 创建数组
<script language=”JavaScript”>
<!–
var myArray = new Array(5);
myArray[0] = “First Entry”;
myArray[1] = “Second Entry”;
myArray[2] = “Third Entry”;
myArray[3] = “Fourth Entry”;
myArray[4] = “Fifth Entry”;
var anotherArray = new Array(“First Entry”,”Second Entry”,”Third Entry”,”Fourth Entry”,”Fifth Entry”);
// –>
</script>

13 数组排序
<script language=”JavaScript”>
<!–
var myArray = new Array(5);
myArray[0] = “z”;
myArray[1] = “c”;
myArray[2] = “d”;
myArray[3] = “a”;
myArray[4] = “q”;
document.write(myArray.sort());
// –>
</script>

14 分割字符串
<script language=”JavaScript”>
<!–
var myVariable = “a,b,c,d”;
var stringArray = myVariable.split(“,”);
document.write(stringArray[0]);
document.write(stringArray[1]);
document.write(stringArray[2]);
document.write(stringArray[3]);
// –>
</script>

15 弹出警告信息
<script language=”JavaScript”>
<!–
window.alert(“Hello”);
// –>
</script>

16 弹出确认框
<script language=”JavaScript”>
<!–
var result = window.confirm(“Click OK to continue”);
// –>
</script>

17 自定义函数
<script language=”JavaScript”>
<!–
function multiple(number1,number2) {
var result = number1 * number2;
return result;
}
// –>
</script>

18 调用JS函数
<a href=”#” onClick=”functionName()”>Link text</a>
<a href="/”javascript:functionName"()”>Link text</a>

19 在页面加载完成后执行函数
<body onLoad=”functionName();”>
Body of the page
</body>

20 条件判断
<script>
<!–
var userChoice = window.confirm(“Choose OK or Cancel”);
var result = (userChoice == true) ? “OK” : “Cancel”;
document.write(result);
// –>
</script>

21 指定次数循环
<script>
<!–
var myArray = new Array(3);
myArray[0] = “Item 0”;
myArray[1] = “Item 1”;
myArray[2] = “Item 2”;
for (i = 0; i < myArray.length; i++) {
document.write(myArray[i] + “<br>”);
}
// –>
</script>

22 设定将来执行
<script>
<!–
function hello() {
window.alert(“Hello”);
}
window.setTimeout(“hello()”,5000);
// –>
</script> 

23 定时执行函数
<script>
<!–
function hello() {
window.alert(“Hello”);
window.setTimeout(“hello()”,5000);
}
window.setTimeout(“hello()”,5000);
// –>
</script>

24 取消定时执行
<script>
<!–
function hello() {
window.alert(“Hello”);
}
var myTimeout = window.setTimeout(“hello()”,5000);
window.clearTimeout(myTimeout);
// –>
</script>

25 在页面卸载时候执行函数
<body onUnload=”functionName();”>
Body of the page
</body>

JavaScript就这么回事2:浏览器输出

26 访问document对象
<script language=”JavaScript”>
var myURL = document.URL;
window.alert(myURL);
</script>

27 动态输出HTML
<script language=”JavaScript”>
document.write(“<p>Here’s some information about this document:</p>”);
document.write(“<ul>”);
document.write(“<li>Referring Document: “ + document.referrer + “</li>”);
document.write(“<li>Domain: “ + document.domain + “</li>”);
document.write(“<li>URL: “ + document.URL + “</li>”);
document.write(“</ul>”);
</script>

28 输出换行
document.writeln(“<strong>a</strong>”);
document.writeln(“b”);

29 输出日期
<script language=”JavaScript”>
var thisDate = new Date();
document.write(thisDate.toString());
</script>

30 指定日期的时区
<script language=”JavaScript”>
var myOffset = -2;
var currentDate = new Date();
var userOffset = currentDate.getTimezoneOffset()/60;
var timeZoneDifference = userOffset – myOffset;
currentDate.setHours(currentDate.getHours() + timeZoneDifference);
document.write(“The time and date in Central Europe is: “ + currentDate.toLocaleString());
</script>

31 设置日期输出格式
<script language=”JavaScript”>
var thisDate = new Date();
var thisTimeString = thisDate.getHours() + “:” + thisDate.getMinutes();
var thisDateString = thisDate.getFullYear() + “/” + thisDate.getMonth() + “/” + thisDate.getDate();
document.write(thisTimeString + “ on “ + thisDateString);
</script>

32 读取URL参数
<script language=”JavaScript”>
var urlParts = document.URL.split(“?”);
var parameterParts = urlParts[1].split(“&”);
for (i = 0; i < parameterParts.length; i++) {
var pairParts = parameterParts[i].split(“=”);
var pairName = pairParts[0];
var pairValue = pairParts[1];
document.write(pairName + “ :“ +pairValue );
}
</script>
你还以为HTML是无状态的么?

33 打开一个新的document对象
<script language=”JavaScript”>
function newDocument() {
document.open();
document.write(“<p>This is a New Document.</p>”);
document.close();
}
</script>

34 页面跳转
<script language=”JavaScript”>
window.location = “http://www.x-force.cn/”;
</script>

35 添加网页加载进度窗口
<html>
<head>
<script language=‘javaScript‘>
var placeHolder = window.open(‘holder.html‘,‘placeholder‘,‘width=200,height=200‘);
</script>
<title>The Main Page</title>
</head>
<body onLoad=‘placeHolder.close()‘>
<p>This is the main page</p>
</body>
</html>

JavaScript就这么回事3:图像

36 读取图像属性
<img src="/”image1.jpg"” name=”myImage”>
<a href=”# ” onClick=”window.alert(document.myImage.width)”>Width</a>

37 动态加载图像
<script language=”JavaScript”>
myImage = new Image;
myImage.src = “Tellers1.jpg”;
</script>

38 简单的图像替换
<script language=”JavaScript”>
rollImage = new Image;
rollImage.src = “rollImage1.jpg”;
defaultImage = new Image;
defaultImage.src = “image1.jpg”;
</script>
<a href="/”myUrl"” onMouseOver=”document.myImage.src = rollImage.src;”
onMouseOut=”document.myImage.src = defaultImage.src;”>
<img src="/”image1.jpg"” name=”myImage” width=100 height=100 border=0>

39 随机显示图像
<script language=”JavaScript”>
var imageList = new Array;
imageList[0] = “image1.jpg”;
imageList[1] = “image2.jpg”;
imageList[2] = “image3.jpg”;
imageList[3] = “image4.jpg”;
var imageChoice = Math.floor(Math.random() * imageList.length);
document.write(‘<img src=”’ + imageList[imageChoice] + ‘“>’);
</script>

40 函数实现的图像替换
<script language=”JavaScript”>
var source = 0;
var replacement = 1;
function createRollOver(originalImage,replacementImage) {
var imageArray = new Array;
imageArray[source] = new Image;
imageArray[source].src = originalImage;
imageArray[replacement] = new Image;
imageArray[replacement].src = replacementImage;
return imageArray;
}
var rollImage = createRollOver(“image1.jpg”,”rollImage1.jpg”);
</script>
<a href=”#” onMouseOver=”document.myImage1.src = rollImage1[replacement].src;”
onMouseOut=”document.myImage1.src = rollImage1[source].src;”>
<img src="/”image1.jpg"” width=100 name=”myImage1” border=0>
</a>

41 创建幻灯片
<script language=”JavaScript”>
var imageList = new Array;
imageList[0] = new Image;
imageList[0].src = “image1.jpg”;
imageList[1] = new Image;
imageList[1].src = “image2.jpg”;
imageList[2] = new Image;
imageList[2].src = “image3.jpg”;
imageList[3] = new Image;
imageList[3].src = “image4.jpg”;
function slideShow(imageNumber) {
document.slideShow.src = imageList[imageNumber].src;
imageNumber += 1;
if (imageNumber < imageList.length) {
window.setTimeout(“slideShow(“ + imageNumber + “)”,3000);
}
}
</script>
</head>
<body onLoad=”slideShow(0)”>
<img src="/”image1.jpg"” width=100 name=”slideShow”>

42 随机广告图片
<script language=”JavaScript”>
var imageList = new Array;
imageList[0] = “image1.jpg”;
imageList[1] = “image2.jpg”;
imageList[2] = “image3.jpg”;
imageList[3] = “image4.jpg”;
var urlList = new Array;
urlList[0] = “http://some.host/”;
urlList[1] = “http://another.host/”;
urlList[2] = “http://somewhere.else/”;
urlList[3] = “http://right.here/”;
var imageChoice = Math.floor(Math.random() * imageList.length);
document.write(‘<a href=”’ + urlList[imageChoice] + ‘“><img src=”’ + imageList[imageChoice] + ‘“></a>’);
</script>

JavaScript就这么回事4:表单

43 表单构成
<form method=”post” action=”target.html” name=”thisForm”>
<input type=”text” name=”myText”>
<select name=”mySelect”>
<option value=”1”>First Choice</option>
<option value=”2”>Second Choice</option>
</select>
<br>
<input type=”submit” value=”Submit Me”>
</form>

44 访问表单中的文本框内容
<form name=”myForm”>
<input type=”text” name=”myText”>
</form>
<a href=‘#‘ onClick=‘window.alert(document.myForm.myText.value);‘>Check Text Field</a>

45 动态复制文本框内容
<form name=”myForm”>
Enter some Text: <input type=”text” name=”myText”><br>
Copy Text: <input type=”text” name=”copyText”>
</form>
<a href=”#” onClick=”document.myForm.copyText.value =
document.myForm.myText.value;”>Copy Text Field</a>

46 侦测文本框的变化
<form name=”myForm”>
Enter some Text: <input type=”text” name=”myText” onChange=”alert(this.value);”>
</form>

47 访问选中的Select
<form name=”myForm”>
<select name=”mySelect”>
<option value=”First Choice”>1</option>
<option value=”Second Choice”>2</option>
<option value=”Third Choice”>3</option>
</select>
</form>
<a href=‘#‘ onClick=‘alert(document.myForm.mySelect.value);‘>Check Selection List</a>

48 动态增加Select项
<form name=”myForm”>
<select name=”mySelect”>
<option value=”First Choice”>1</option>
<option value=”Second Choice”>2</option>
</select>
</form>
<script language=”JavaScript”>
document.myForm.mySelect.length++;
document.myForm.mySelect.options[document.myForm.mySelect.length – 1].text = “3”;
document.myForm.mySelect.options[document.myForm.mySelect.length – 1].value = “Third Choice”;
</script>

49 验证表单字段
<script language=”JavaScript”>
function checkField(field) {
if (field.value == “”) {
window.alert(“You must enter a value in the field”);
field.focus();
}
}
</script>
<form name=”myForm” action=”target.html”>
Text Field: <input type=”text” name=”myField”onBlur=”checkField(this)”>
<br><input type=”submit”>
</form>

50 验证Select项
function checkList(selection) {
if (selection.length == 0) {
window.alert(“You must make a selection from the list.”);
return false;
}
return true;
}

51 动态改变表单的action
<form name=”myForm” action=”login.html”>
Username: <input type=”text” name=”username”><br>
Password: <input type=”password” name=”password”><br>
<input type=”button” value=”Login” onClick=”this.form.submit();”>
<input type=”button” value=”Register” onClick=”this.form.action = ‘register.html’; this.form.submit();”>
<input type=”button” value=”Retrieve Password” onClick=”this.form.action = ‘password.html’; this.form.submit();”>
</form>

52 使用图像按钮
<form name=”myForm” action=”login.html”>
Username: <input type=”text” name=”username”><br>
Password: <input type=”password”name=”password”><br>
<input type=”image” src="/”login.gif"” value=”Login”>
</form>

53 表单数据的加密
<SCRIPT LANGUAGE=‘JavaScript‘>
<!–
function encrypt(item) {
var newItem = ‘‘;
for (i=0; i < item.length; i++) {
newItem += item.charCodeAt(i) + ‘.‘;
}
return newItem;
}
function encryptForm(myForm) {
for (i=0; i < myForm.elements.length; i++) {
myForm.elements[i].value = encrypt(myForm.elements[i].value);
}
}

//–>
</SCRIPT>
<form name=‘myForm‘ onSubmit=‘encryptForm(this); window.alert(this.myField.value);‘>
Enter Some Text: <input type=text name=myField><input type=submit>
</form>

JavaScript就这么回事5:窗口和框架

54 改变浏览器状态栏文字提示
<script language=”JavaScript”>
window.status = “A new status message”;
</script>

55 弹出确认提示框
<script language=”JavaScript”>
var userChoice = window.confirm(“Click OK or Cancel”);
if (userChoice) {
document.write(“You chose OK”);
} else {
document.write(“You chose Cancel”);
}
</script>

56 提示输入
<script language=”JavaScript”>
var userName = window.prompt(“Please Enter Your Name”,”Enter Your Name Here”);
document.write(“Your Name is “ + userName);
</script>

57 打开一个新窗口
//打开一个名称为myNewWindow的浏览器新窗口
<script language=”JavaScript”>
window.open(“http://www.liu21st.com/”,”myNewWindow”);
</script>

58 设置新窗口的大小
<script language=”JavaScript”>
window.open(“http://www.liu21st.com/”,”myNewWindow”,‘height=300,width=300‘);
</script>

59 设置新窗口的位置
<script language=”JavaScript”>
window.open(“http://www.liu21st.com/”,”myNewWindow”,‘height=300,width=300,left=200,screenX=200,top=100,screenY=100‘);
</script>

60 是否显示工具栏和滚动栏
<script language=”JavaScript”>
window.open(“http://www.x-force.cn/",toolbar=no, menubar=no);
</script>

61 是否可以缩放新窗口的大小
<script language=”JavaScript”>
window.open(‘http://www.x-force.cn/‘ , ‘myNewWindow‘, ‘resizable=yes‘ );</script>

62 加载一个新的文档到当前窗口
<a href=‘#‘ onClick=‘document.location = ‘125a.html‘;‘ >Open New Document</a>

63 设置页面的滚动位置
<script language=”JavaScript”>
if (document.all) { //如果是IE浏览器则使用scrollTop属性
document.body.scrollTop = 200;
} else { //如果是NetScape浏览器则使用pageYOffset属性
window.pageYOffset = 200;
}</script>

64 在IE中打开全屏窗口
<a href=‘#‘ onClick=”window.open(‘http://www.juxta.com/‘,‘newWindow‘,‘fullScreen=yes‘);”>Open a full-screen window</a>

65 新窗口和父窗口的操作
<script language=”JavaScript”>
//定义新窗口
var newWindow = window.open(“128a.html”,”newWindow”);
newWindow.close(); //在父窗口中关闭打开的新窗口
</script>在新窗口中关闭父窗口
window.opener.close()

66 往新窗口中写内容
<script language=”JavaScript”>
var newWindow = window.open(“”,”newWindow”);
newWindow.document.open();
newWindow.document.write(“This is a new window”);
newWIndow.document.close();
</script>

67 加载页面到框架页面
<frameset cols=”50%,*”>
<frame name=”frame1” src="/”135a.html"”>
<frame name=”frame2” src="/”about:blank"”>
</frameset>
在frame1中加载frame2中的页面
parent.frame2.document.location = “135b.html”;

68 在框架页面之间共享脚本
如果在frame1中html文件中有个脚本
function doAlert() {
window.alert(“Frame 1 is loaded”);
}
那么在frame2中可以如此调用该方法

<body onLoad=”parent.frame1.doAlert();”>
This is frame 2.
</body>

69 数据公用
可以在框架页面定义数据项,使得该数据可以被多个框架中的页面公用
<script language=”JavaScript”>
var persistentVariable = “This is a persistent value”;
</script>
<frameset cols=”50%,*”>
<frame name=”frame1” src="/”138a.html"”>
<frame name=”frame2” src="/”138b.html"”>
</frameset>

这样在frame1和frame2中都可以使用变量persistentVariable

70 框架代码库
根据以上的一些思路,我们可以使用一个隐藏的框架页面来作为整个框架集的代码库

<frameset cols=”0,50%,*”>
<frame name=”codeFrame” src="/”140code.html"”>
<frame name=”frame1” src="/”140a.html"”>
<frame name=”frame2” src="/”140b.html"”>
</frameset>

密码已经是我们生活工作中必不可少的工具,但一个不安全的密码有又有可能会给我们造成不必要的损失。作为网站设计者,如果我们在网页中能对用户输入的密码进行安全评估,并显示出相应的提示信息,那么对用户设置一个安全的密码将有很大帮助。同时也使得网站更具人性化,更有吸引力.

什么是一个安全的密码呢?本程序按以下的方式进行评估.

1.如果密码少于5位,那么就认为这是一个弱密码.

2.如果密码只由数字、小写字母、大写字母或其它特殊符号当中的一种组成,则认为这是一个弱密码.

3.如果密码由数字、小写字母、大写字母或其它特殊符号当中的两种组成,则认为这是一个中度安全的密码.

4.如果密码由数字、小写字母、大写字母或其它特殊符号当中的三种以上组成,则认为这是一个比较安全的密码.

本程序将根据用户输入的密码分别显示不同的颜色表示密码的强度,具体程序如下:

以下是代码:

< script language=javascript>

//CharMode函数
//测试某个字符是属于哪一类.
function CharMode(iN){
if (iN>=48 && iN < =57) //数字
return 1;
if (iN>=65 && iN < =90) //大写字母
return 2;
if (iN>=97 && iN < =122) //小写
return 4;
else
return 8; //特殊字符
}

//bitTotal函数
//计算出当前密码当中一共有多少种模式
function bitTotal(num){
modes=0;
for (i=0;i< 4;i++){
if (num & 1) modes++;
num>>>=1;
}
return modes;
}

//checkStrong函数
//返回密码的强度级别

function checkStrong(sPW){
if (sPW.length< =4)
return 0; //密码太短
Modes=0;
for (i=0;i< sPW.length;i++){
//测试每一个字符的类别并统计一共有多少种模式.
Modes|=CharMode(sPW.charCodeAt(i));
}

return bitTotal(Modes);

}

//pwStrength函数
//当用户放开键盘或密码输入框失去焦点时,根据不同的级别显示不同的颜色

function pwStrength(pwd){
O_color="#eeeeee";
L_color="#FF0000";
M_color="#FF9900";
H_color="#33CC00";
if (pwd==null||pwd==){
Lcolor=Mcolor=Hcolor=O_color;
}
else{
S_level=checkStrong(pwd);
switch(S_level) {
case 0:
Lcolor=Mcolor=Hcolor=O_color;
case 1:
Lcolor=L_color;
Mcolor=Hcolor=O_color;
break;
case 2:
Lcolor=Mcolor=M_color;
Hcolor=O_color;
break;
default:
Lcolor=Mcolor=Hcolor=H_color;
}
}

document.getElementById("strength_L").style.background=Lcolor;
document.getElementById("strength_M").style.background=Mcolor;
document.getElementById("strength_H").style.background=Hcolor;
return;
}

< /script>

< form name=form1 action="" >
输入密码:
< input type=password size=10 onKeyUp=pwStrength(this.value)
onBlur=pwStrength(this.value)>
< br>密码强度:
< table width="217" border="1" cellspacing="0" cellpadding="1" bordercolor="#cccccc"
height="23" style=display:inline>
< tr align="center" bgcolor="#eeeeee">

< td width="33%" id="strength_L">弱< /td>

< td width="33%" id="strength_M">中< /td>

< td width="33%" id="strength_H">强< /td>
< /tr>
< /table>

< /form>

密码已经是我们生活工作中必不可少的工具,但一个不安全的密码有又有可能会给我们造成不必要的损失。作为网站设计者,如果我们在网页中能对用户输入的密码进行安全评估,并显示出相应的提示信息,那么对用户设置一个安全的密码将有很大帮助。同时也使得网站更具人性化,更有吸引力.
什么是一个安全的密码呢?本程序按以下的方式进行评估.
1.如果密码少于5位,那么就认为这是一个弱密码.
2.如果密码只由数字、小写字母、大写字母或其它特殊符号当中的一种组成,则认为这是一个弱密码.
3.如果密码由数字、小写字母、大写字母或其它特殊符号当中的两种组成,则认为这是一个中度安全的密码.
4.如果密码由数字、小写字母、大写字母或其它特殊符号当中的三种以上组成,则认为这是一个比较安全的密码.

具体程序如下(演示地址:http://www.netInter.cn/reg):

< script language=javascript>

//程序设计:环球万维 netInter.cn
//本程序是环球万维原创程序,若需转载,请注明网址及出处,谢谢.
//以上信息与文章正文是不可分割的一部分,所以如果您要转载本文章,您必须保留以上信息.

//CharMode函数
//测试某个字符是属于哪一类.
function CharMode(iN){
if (iN>=48 && iN <=57) //数字
return 1;
if (iN>=65 && iN <=90) //大写字母
return 2;
if (iN>=97 && iN <=122) //小写
return 4;
else
return 8; //特殊字符
}

//bitTotal函数
//计算出当前密码当中一共有多少种模式
function bitTotal(num){
modes=0;
for (i=0;i<4;i++){
if (num & 1) modes++;
num>>>=1;
}
return modes;
}

//checkStrong函数
//返回密码的强度级别

function checkStrong(sPW){
if (sPW.length<=4)
return 0; //密码太短
Modes=0;
for (i=0;i<sPW.length;i++){
//测试每一个字符的类别并统计一共有多少种模式.
Modes|=CharMode(sPW.charCodeAt(i));
}

return bitTotal(Modes);

}

//pwStrength函数
//当用户放开键盘或密码输入框失去焦点时,根据不同的级别显示不同的颜色

function pwStrength(pwd){
O_color="#eeeeee";
L_color="#FF0000";
M_color="#FF9900";
H_color="#33CC00";
if (pwd==null||pwd==‘‘){
Lcolor=Mcolor=Hcolor=O_color;
}
else{
S_level=checkStrong(pwd);
switch(S_level) {
case 0:
Lcolor=Mcolor=Hcolor=O_color;
case 1:
Lcolor=L_color;
Mcolor=Hcolor=O_color;
break;
case 2:
Lcolor=Mcolor=M_color;
Hcolor=O_color;
break;
default:
Lcolor=Mcolor=Hcolor=H_color;
}
}

document.getElementById("strength_L").style.background="/Lcolor";
document.getElementById("strength_M").style.background=Mcolor;
document.getElementById("strength_H").style.background=Hcolor;
return;
}

< /script>

< form name=form1 action="" >
输入密码:< input type=password size=10 onKeyUp=pwStrength(this.value) onBlur=pwStrength(this.value)>
< br>密码强度:
< table width="217" border="1" cellspacing="0" cellpadding="1" bordercolor="#cccccc" height="23" style=‘display:inline‘>
< tr align="center" bgcolor="#eeeeee">

< td width="33%" id="strength_L">弱< /td>

< td width="33%" id="strength_M">中< /td>

< td width="33%" id="strength_H">强< /td>
< /tr>
< /table>

< /form>

现在很多浏览器都有“弹出窗口过滤功能”,对于一些网站的功能有一定的限制,那么开发人员怎么样才能知道你的窗口是否被浏览器过滤,弹不出你的功能窗口了呢?icech找到了一段代码能够判断是否浏览器阻止了弹出窗口,并提示用户的方法。市一段javascript代码。

先将这段代码放在head里面

下面是一个下拉菜单的效果测试

这样就可以了,效果不错吧!
转载本文请注明来源于:西部E网 www.weste.net,谢谢支持!

看到了一段防止SQL注入的JavaScript代码,但是似乎在后台解决的话会更好。

[php]
<SCRIPT language="JavaScript">
function Check(theform)
{
if (theform.UserName.value=="")
{
alert("请输入用户名!")
theform.UserName.focus();
return (false);
}
if (theform.Password.value == "")
{
alert("请输入密码!");
theform.Password.focus();
return (false);
}
}
function IsValid( oField )
{
re= /select|update|delete|exec|count|‘|"|=|;|>|<|%/i;
$sMsg = "请您不要在参数中输入特殊字符和SQL关键字!"
if ( re.test(oField.value) )
{
alert( $sMsg );
oField.value = ‘‘;
oField.focus();
return false;
}
}
</SCRIPT>

<input name="UserName" type="text" maxlength="20" id="UserName" onblur="IsValid(this);" style="width:125px;" />
<input name="Password" type="password" maxlength="20" id="Password" onblur="IsValid(this);" style="width:125px;" />
[/php]

JS实现浏览器菜单命令

<object id=min classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11"><param name="Command" value="Minimize"></object>

<object id=max classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11"><param name="Command" value="Maximize"></object>

<object id=close classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11"><PARAM NAME="Command" value="Close"></object>

<input type=button value=最小化 onclick=min.Click()>

<input type=button value=最大化 onclick=max.Click()>

<input type=button value=关闭 onclick=close.Click()></div>

<INPUT type=button onclick="document.execCommand(‘open‘)" value=打开>

<INPUT type=button onclick="document.execCommand(‘saveas‘)" value=保存>

<INPUT type=button onclick="document.execCommand(‘print‘)" value=打印>

<INPUT type=button onclick="document.execCommand(‘selectall‘)" value=全选>

<INPUT type=button onclick="location.replace(‘view-source:‘+location)" value=源文件>

<INPUT type=button onclick="window.external.ShowBrowserUI(‘PrivacySettings‘,null)" value=安全选项>

<input type=button onClick="window.external.ShowBrowserUI(‘LanguageDialog‘, null)" value=语言设置>

<INPUT type=button onclick="window.external.AddFavorite(location.href, document.title)" value=加入收藏夹>

<INPUT type=button onclick="window.external.ShowBrowserUI(‘OrganizeFavorites‘, null)" value=整理收藏夹>

<INPUT onclick=history.go(-1) type=submit value=后退>

<INPUT onclick=history.go(1) type=submit value=前进>

<input type=button value=刷新 name=refresh onclick="window.location.reload()">

<input type="button" value="导入收藏夹" onClick=window.external.ImportExportFavorites(true,‘‘);>

<input type="button" value="导出收藏夹" onClick=window.external.ImportExportFavorites(false,‘‘);>

方法1: 这个方法显示的效果就是一个按钮,比较简单方便,baidu传情使用的就是这个方法。

方法1示例:

方法2: 这个方法就是本站使用的方法。

<SCRIPT language=JavaScript1.2>
message="任何款式的虚拟主机空间均可免费试用一周。(先试用,后付款!)所试用的空间是真实的空间,即试用空间=将要购买的空间。"
ns6switch=1
var ns6=document.getElementById&&!document.all
mes=new Array();
mes[0]=-1;
mes[1]=-4;
mes[2]=-7;mes[3]=-10;
mes[4]=-7;
mes[5]=-4;
mes[6]=-1;
num=0;
num2=0;
txt="";
function jump0(){
if (ns6&&!ns6switch){
jump.innerHTML=message
return
}
if(message.length > 6){
for(i=0; i != message.length;i++){
txt=txt+"<span style=‘position:relative;‘ id=‘n"+i+"‘>"+message.charAt(i)+"</span>"};
jump.innerHTML=txt;
txt="";
jump1a()
}
else{
alert("上海伯汉网络科技有限公司")
}
}
function jump1a(){
nfinal=(document.getElementById)? document.getElementById("n0") : document.all.n0
nfinal.style.left=-num2;
if(num2 != 9){
num2=num2+3;
setTimeout("jump1a()",50)
}
else{
jump1b()
}
}

function jump1b(){
nfinal.style.left=-num2;
if(num2 != 0){num2=num2-3;
setTimeout("jump1b()",50)
}
else{
jump2()
}
}
function jump2(){
txt="";
for(i=0;i != message.length;i++){
if(i+num > -1 && i+num < 7){
txt=txt+"<span style=‘position:relative;top:"+mes[i+num]+"‘>"+message.charAt(i)+"</span>"
}
else{txt=txt+"<span>"+message.charAt(i)+"</span>"}
}
jump.innerHTML=txt;
txt="";
if(num != (-message.length)){
num–;
setTimeout("jump2()",50)}
else{num=0;
setTimeout("jump0()",50)}}
</SCRIPT>
<DIV id=jumpx style="COLOR: #3C6897"></DIV>
<SCRIPT>
if (document.all||document.getElementById){
jump=(document.getElementById)? document.getElementById("jumpx") : document.all.jumpx
jump0()
}
else
document.write(message)
</SCRIPT>

<body>
<div id="ShowTime" align="left"></div>
<script>
/* 显示星期几的JavaScript代码 */
var aa=DateDemo();
document.getElementById("ShowTime").innerHTML=aa;
function DateDemo(){
var d, day, x, s = "今天是: ";
var x = new Array("星期日", "星期一", "星期二");
var x = x.concat("星期三","星期四", "星期五");
var x = x.concat("星期六");
d = new Date();
day = d.getDay();
return(s += x[day]);
}
</script>
</body>