❶ 如何使用javascript製作驗證碼
你這太簡單了吧，呵呵！
使用方法：
1. 將以下代碼保存為img.asp
2. 在要顯示位置插入<img src="img.asp?number=55-00">
<%
Call Com_CreatValidCode(Request.QueryString("number"))
Public Sub Com_CreatValidCode(pTel)
'----------禁止緩存
Response.Expires = 0
Response.AddHeader "Pragma","no-cache"
Response.AddHeader "cache-ctrol","no-cache"
Response.ContentType = "Image/BMP"
Randomize
Dim i, ii, iii ,rndColor,strLen,sql,rs
Const cOdds = 5 '------------雜點出現的機率
Const str="0123456789-"
strLen = len(pTel)
rndColor = ChrB(cint(rnd*255)) & ChrB(cint(rnd*255)) & ChrB(cint(rnd*255))
'-----------顏色的數據(字元，背景)
Dim vColorData(1)
'vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0) '----藍0，綠0，紅0（黑色）
'vColorData(1) = ChrB(255) & ChrB(255) & ChrB(255) '----藍250，綠236，紅211（淺藍色）
'vColorData(0) = ChrB(197) & ChrB(106) & ChrB(49) '---- 藍0，綠0，紅0（黑色）
'vColorData(1) = ChrB(238) & ChrB(210) & ChrB(193) '-----藍250，綠236，紅211（淺藍色）
vColorData(0) = ChrB(0) & ChrB(0) & ChrB(0) '---------藍0，綠0，紅0（黑色）
vColorData(1) = ChrB(205) & ChrB(237) & ChrB(245) '------------藍250，綠236，紅211（淺藍色）
'--------------------隨機產生字元
Randomize
Dim vCode()
redim vCode(strLen-1)
For i = 0 To strLen-1
vCode(i) =instr(1,str,mid(pTel,i+1,1),1)-1
Next
'-----------字元的數據
Dim vNumberData(11)
'Verdana Font
vNumberData(0) = "1111111111"
vNumberData(1) = "1111111111"
vNumberData(2) = "0111111111"
vNumberData(3) = "1111111111"
vNumberData(4) = "0111111111"
vNumberData(5) = "1111111111"
vNumberData(6) = "1111111111"
vNumberData(7) = "1111111111"
vNumberData(8) = "1111111111"
vNumberData(9) = "0111111111"
vNumberData(10) = "1111111111"
vNumberData(11) = "1111111111"
'-----------------輸出圖像文件頭 <br>
Response.BinaryWrite ChrB(66) & ChrB(77) &chrb(((strLen*8*10*3+54) mod 256)) & chrb(((strLen*8*10*3+54)\ 256)mod 256) & ChrB((((strLen*8*10*3+54)\ 256)\256)mod 256) & ChrB(((((strLen*8*10*3+54)\ 256)\256)\256)mod 256) & ChrB(0) & ChrB(0) &_
ChrB(0) & ChrB(0) & ChrB(54) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(40) & ChrB(0) &_
ChrB(0) & ChrB(0) & ChrB(strLen*8) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(10) & ChrB(0) &_
ChrB(0) & ChrB(0) & ChrB(1) & ChrB(0)
'------------------輸出圖像信息頭
Response.BinaryWrite ChrB(24) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)&_
ChrB((strLen*8*10*3)mod 256)&ChrB(((strLen*8*10*3)\256)mod 256)&ChrB((((strLen*8*10*3)\256)\256)mod 256)&ChrB(((((strLen*8*10*3)\256)\256)\256)mod 256)&_
ChrB(196) & ChrB(14) & ChrB(0) & ChrB(0) & ChrB(196) & ChrB(14)&ChrB(0) & ChrB(0) &_
ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0) & ChrB(0)
For i = 9 To 0 Step -1 '----------歷經所有行
For ii = 0 To strLen-1 '-------歷經所有字
For iii = 1 To 8 '--------歷經所有像素
'---------逐行、逐字、逐像素地輸出圖像數據
If Rnd * 99 + 1 < cOdds Then '---------隨機生成雜點
Response.BinaryWrite rndColor
Else
Response.BinaryWrite vColorData(Mid(vNumberData(vCode(ii)), i * 8 + iii, 1))
End If
Next
Next
Next
End Sub
%>
是否可以解決您的問題？
❷ 用JavaScript怎麼設置驗證碼
我的開發工具是myeclipse復制以下代碼,即可生成效果.
<html xmlns=" http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>無標題頁</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<div id="divCode" style="background-color:White; width:52px; height:16px; padding:5px; text-align:center; vertical-align:middle; letter-spacing:5px; border:solid 1px blue"><span></span><span ></span><span ></span><span ></span></div>
</div>
<input id="Button1" type="button" value="換一張" onclick="JavaScript:validteCode()"/>
</form>
</body>
</html>
<script language="JavaScript" type="text/JavaScript">
function validteCode()
{
var codes = new Array(4); //用於存儲隨機驗證碼
var colors = new Array("Red","Green","Gray","Blue","Maroon","Aqua","Fuchsia","Lime","Olive","Silver");
for(var i=0;i < codes.length;i++)
{//獲取隨機驗證碼
codes[i] = Math.floor(Math.random()*10);
}
var spans = document.getElementById("divCode").all;
for(var i=0;i<spans.length;i++)
{
spans[i].innerHTML=codes[i];
spans[i].style.color = colors[Math.floor(Math.random()*10)]; //隨機設置驗證碼顏色
}
}
document.onload = validteCode();
</script>
❸ 用Javascript做一個「獲取驗證碼」的按鈕
<!DOCTYPEHTML>
<html>
<head>
<metacharset="UTF-8"/>
<title>pro.html</title>
<styletype="text/css">
.checkCode{
cursor:pointer;
border:1pxsolidblack;
text-align:center;
line-height:26px;
width:115px;
height:35px;
}
</style>
<scripttype="text/javascript">
varsleep=30,interval=null;
window.onload=function()
{
varbtn=document.getElementById('btn');
btn.onclick=function()
{
if(!interval)
{
this.style.backgroundColor='rgb(243,182,182)';
this.disabled="disabled";
this.style.cursor="wait";
this.value="重新發送("+sleep--+")";
interval=setInterval(function()
{
if(sleep==0)
{
if(!!interval)
{
clearInterval(interval);
interval=null;
sleep=30;
btn.style.cursor="pointer";
btn.removeAttribute('disabled');
btn.value="免費獲取驗證碼";
btn.style.backgroundColor='';
}
returnfalse;
}
btn.value="重新發送("+sleep--+")";
},1000);
}
}
}
</script>
</head>
<body>
<inputclass="checkCode"type="button"id="btn"value="免費獲取驗證碼"/>
</body>
</html>
❹ 生成驗證碼，JavaScript，求大佬解答
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
div {
width: 150px;
height: 120px;
background-color: lightblue;
font-size: 44px;
text-align: center;
line-height: 120px;
}
</style>
</head>
<body>
<div></div>
<button>生成驗證碼</button>
<script>
// 獲取div盒子
var divs = document.querySelector('div');
// 獲取按鈕
var button = document.querySelector('button');
// 自定義數組
var ary = ['1','2','3','a','b','c'];
// 點擊事件
button.onclick = function () {
// 在下一次點擊時候清空盒子內文字
divs.innerText = '';
// 定義一個字元串
var str = '';
// 循環3次獲取數組中的數字
for (var i = 1; i <=3 ; i++){
// 定義一個0-6的隨機數並且向下取整
m= Math.floor(Math.random()*6);
// 以隨機數作為數組索引將數組中的值賦值給a
var a = ary[m];
// 把得到的數字進行字元串拼接
str = str +a ;
// 將拼接得到的字元串賦值給盒子中的文字
divs.innerText = str ;
}
}
</script>
</body>
</html>
❺ 求一個能實現驗證碼效果的js代碼
<html>
<head>
<style type="text/css">
.code{
background-image:url(111.jpg);
font-family:Arial,宋體;
font-style:italic;
color:green;
border:0;
padding:2px 3px;
letter-spacing:3px;
font-weight:bolder;
}
.unchanged {
border:0;
}
</style>
<script language="javascript" type="text/javascript">
var code ; //在全局 定義驗證碼
function createCode(){
code = new Array();
var codeLength = 4;//驗證碼的長度
var checkCode = document.getElementById("checkCode");
checkCode.value = "";
var selectChar = new Array(2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z');
for(var i=0;i<codeLength;i++) {
var charIndex = Math.floor(Math.random()*32);
code +=selectChar[charIndex];
}
if(code.length != codeLength){
createCode();
}
checkCode.value = code;
}
function validate () {
var inputCode = document.getElementById("input1").value.toUpperCase();
if(inputCode.length <=0) {
alert("請輸入驗證碼！");
return false;
}
else if(inputCode != code ){
alert("驗證碼輸入錯誤！");
createCode();
return false;
}
else {
alert("成功！");
return true;
}
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head>
<body onLoad="createCode();">
<input type="text" id="input1" />
<input type="button" id="checkCode" class="code" style="width:60px" onClick="createCode()" /> <a href="#" onClick="createCode()">看不清楚</a>
<input id="Button1" onClick="validate();" type="button" value="確定" />
<script></script>
</body>
</html>
你要是的是不是這種效果
❻ JS 怎麼製作數字、字母、漢字混合的驗證碼
/***************************************************/
/**效果倒是出來了,但是不是十分好看*********/
/**建議還是單選漢字或者去掉漢字看看*******/
/**************************************************/
<html>
<head>
<style type="text/css">
.code{
background-image:url(code.jpg);
font-family:Arial;
font-style:italic;
color:Red;
border:0;
padding:2px 3px;
letter-spacing:3px;
font-weight:bolder;
}
.unchanged {
border:0;
}
</style>
<script language="javascript" type="text/javascript">
var code ; //在全局 定義驗證碼
function createCode(){
code = "";
var codeLength = 100;//驗證碼的長度
var checkCode = document.getElementById("checkCode");
checkCode.value = "";
var selectChar = new Array(2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','J','K','L','M','N','P','Q','R','S','T','U','V','W','X','Y','Z','\u7684','\u4e00','\u4e86','\u662f','\u6211','\u4e0d','\u5728','\u4eba','\u4eec','\u6709','\u6765','\u4ed6','\u8fd9','\u4e0a','\u7740','\u4e2a','\u5730','\u5230','\u5927','\u91cc','\u8bf4','\u5c31','\u53bb','\u5b50','\u5f97','\u4e5f','\u548c','\u90a3','\u8981','\u4e0b','\u770b','\u5929','\u65f6','\u8fc7','\u51fa','\u5c0f','\u4e48','\u8d77','\u4f60','\u90fd','\u628a','\u597d','\u8fd8','\u591a','\u6ca1','\u4e3a','\u53c8','\u53ef','\u5bb6','\u5b66','\u53ea','\u4ee5','\u4e3b','\u4f1a','\u6837','\u5e74','\u60f3','\u751f','\u540c','\u8001','\u4e2d','\u5341','\u4ece','\u81ea','\u9762','\u524d','\u5934','\u9053','\u5b83','\u540e','\u7136','\u8d70','\u5f88','\u50cf','\u89c1','\u4e24','\u7528','\u5979','\u56fd','\u52a8','\u8fdb','\u6210','\u56de','\u4ec0','\u8fb9','\u4f5c','\u5bf9','\u5f00','\u800c','\u5df1','\u4e9b','\u73b0','\u5c71','\u6c11','\u5019','\u7ecf','\u53d1','\u5de5','\u5411','\u4e8b','\u547d','\u7ed9','\u957f','\u6c34','\u51e0','\u4e49','\u4e09','\u58f0','\u4e8e','\u9ad8','\u624b','\u77e5','\u7406','\u773c','\u5fd7','\u70b9','\u5fc3','\u6218','\u4e8c','\u95ee','\u4f46','\u8eab','\u65b9','\u5b9e','\u5403','\u505a','\u53eb','\u5f53','\u4f4f','\u542c','\u9769','\u6253','\u5462','\u771f','\u5168','\u624d','\u56db','\u5df2','\u6240','\u654c','\u4e4b','\u6700','\u5149','\u4ea7','\u60c5','\u8def','\u5206','\u603b','\u6761','\u767d','\u8bdd','\u4e1c','\u5e2d','\u6b21','\u4eb2','\u5982','\u88ab','\u82b1','\u53e3','\u653e','\u513f','\u5e38','\u6c14','\u4e94','\u7b2c','\u4f7f','\u5199','\u519b','\u5427','\u6587','\u8fd0','\u518d','\u679c','\u600e','\u5b9a','\u8bb8','\u5feb','\u660e','\u884c','\u56e0','\u522b','\u98de','\u5916','\u6811','\u7269','\u6d3b','\u90e8','\u95e8','\u65e0','\u5f80','\u8239','\u671b','\u65b0','\u5e26','\u961f','\u5148','\u529b','\u5b8c','\u5374','\u7ad9','\u4ee3','\u5458','\u673a','\u66f4','\u4e5d','\u60a8','\u6bcf','\u98ce','\u7ea7','\u8ddf','\u7b11','\u554a','\u5b69','\u4e07','\u5c11','\u76f4','\u610f','\u591c','\u6bd4','\u9636','\u8fde','\u8f66','\u91cd','\u4fbf','\u6597','\u9a6c','\u54ea','\u5316','\u592a','\u6307','\u53d8','\u793e','\u4f3c','\u58eb','\u8005','\u5e72','\u77f3','\u6ee1','\u65e5','\u51b3','\u767e','\u539f','\u62ff','\u7fa4','\u7a76','\u5404','\u516d','\u672c','\u601d','\u89e3','\u7acb','\u6cb3','\u6751','\u516b','\u96be','\u65e9','\u8bba','\u5417','\u6839','\u5171','\u8ba9','\u76f8','\u7814','\u4eca','\u5176','\u4e66','\u5750','\u63a5','\u5e94','\u5173','\u4fe1','\u89c9','\u6b65','\u53cd','\u5904','\u8bb0','\u5c06','\u5343','\u627e','\u4e89','\u9886','\u6216','\u5e08','\u7ed3','\u5757','\u8dd1','\u8c01','\u8349','\u8d8a','\u5b57','\u52a0','\u811a','\u7d27','\u7231','\u7b49','\u4e60','\u9635','\u6015','\u6708','\u9752','\u534a','\u706b','\u6cd5','\u9898','\u5efa','\u8d76','\u4f4d','\u5531','\u6d77','\u4e03','\u5973','\u4efb','\u4ef6','\u611f','\u51c6','\u5f20','\u56e2','\u5c4b','\u79bb','\u8272','\u8138','\u7247','\u79d1','\u5012','\u775b','\u5229','\u4e16','\u521a','\u4e14','\u7531','\u9001','\u5207','\u661f','\u5bfc','\u665a','\u8868','\u591f','\u6574','\u8ba4','\u54cd','\u96ea','\u6d41','\u672a','\u573a','\u8be5','\u5e76','\u5e95','\u6df1','\u523b','\u5e73','\u4f1f','\u5fd9','\u63d0','\u786e','\u8fd1','\u4eae','\u8f7b','\u8bb2','\u519c','\u53e4','\u9ed1','\u544a','\u754c','\u62c9','\u540d','\u5440','\u571f','\u6e05','\u9633','\u7167','\u529e','\u53f2','\u6539','\u5386','\u8f6c','\u753b','\u9020','\u5634','\u6b64','\u6cbb','\u5317','\u5fc5','\u670d','\u96e8','\u7a7f','\u5185','\u8bc6','\u9a8c','\u4f20','\u4e1a','\u83dc','\u722c','\u7761','\u5174','\u5f62','\u91cf','\u54b1','\u89c2','\u82e6','\u4f53','\u4f17','\u901a','\u51b2','\u5408','\u7834','\u53cb','\u5ea6','\u672f','\u996d','\u516c','\u65c1','\u623f','\u6781','\u5357','\u67aa','\u8bfb','\u6c99','\u5c81','\u7ebf','\u91ce','\u575a','\u7a7a','\u6536','\u7b97','\u81f3','\u653f','\u57ce','\u52b3','\u843d','\u94b1','\u7279','\u56f4','\u5f1f','\u80dc','\u6559','\u70ed','\u5c55','\u5305','\u6b4c','\u7c7b','\u6e10','\u5f3a','\u6570','\u4e61','\u547c','\u6027','\u97f3','\u7b54','\u54e5','\u9645','\u65e7','\u795e','\u5ea7','\u7ae0','\u5e2e','\u5566','\u53d7','\u7cfb','\u4ee4','\u8df3','\u975e','\u4f55','\u725b','\u53d6','\u5165','\u5cb8','\u6562','\u6389','\u5ffd','\u79cd','\u88c5','\u9876','\u6025','\u6797','\u505c','\u606f','\u53e5','\u533a','\u8863','\u822c','\u62a5','\u53f6','\u538b','\u6162','\u53d4','\u80cc','\u7ec6');
for(var i=0;i<codeLength;i++) {
var charIndex = Math.floor(Math.random()*550);
code +=selectChar[charIndex];
}
if(code.length != codeLength){
createCode();
}
checkCode.value = code;
}
function validate () {
var inputCode = document.getElementById("input1").value.toUpperCase();
if(inputCode.length <=0) {
alert("請輸入驗證碼！");
return false;
}
else if(inputCode != code ){
alert("驗證碼輸入錯誤！");
createCode();
return false;
}
else {
alert("OK");
return true;
}
}
</script>
</head>
<body onload="createCode();">
<input type="text" id="input1" />
<input type="text" id="checkCode" class="code" style="width: 1000px" /> <a href="#" onclick="createCode()">看不清楚</a><input id="Button1" onclick="validate();" type="button" value="確定" />
<script></script>
</body>
</html>
❼ 怎樣用JavaScript實現驗證碼的驗證
用JavaScript實現驗證碼的驗證主要代碼如下：
var code ; //在全局定義驗證碼
//產生驗證碼
window.onload = function createCode(){
code = "";
var codeLength = 4;//驗證碼的長度
var checkCode = document.getElementById("code");
var random = new Array(0,1,2,3,4,5,6,7,8,9,'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R',
'S','T','U','V','W','X','Y','Z');//隨機數
for(var i = 0; i < codeLength; i++) {//循環操作
var index = Math.floor(Math.random()*36);//取得隨機數的索引（0~35）
code += random[index];//根據索引取得隨機數加到code上
}
checkCode.value = code;//把code值賦給驗證碼
}
//校驗驗證碼
function validate(){
var inputCode = document.getElementById("input").value.toUpperCase(); //取得輸入的驗證碼並轉化為大寫
if(inputCode.length <= 0) { //若輸入的驗證碼長度為0
alert("請輸入驗證碼！"); //則彈出請輸入驗證碼
}
else if(inputCode != code ) { //若輸入的驗證碼與產生的驗證碼不一致時
alert("驗證碼輸入錯誤！@_@"); //則彈出驗證碼輸入錯誤
createCode();//刷新驗證碼
document.getElementById("input").value = "";//清空文本框
}
else { //輸入正確時
alert("^-^"); //彈出^-^
}
}
❽ 使用JavaScript，如何生成漢字驗證碼
簡單代碼如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>JS生成驗證碼</title>
<style type="text/css">
.code {
background-image: url(code.jpg);
font-family: Arial;
font-style: italic;
color: Red;
border: 0;
padding: 2px 3px;
letter-spacing: 3px;
font-weight: bolder;
}
.unchanged {
border: 0;
}
</style>
<script language="javascript" type="text/javascript">
var code; //在全局 定義驗證碼
function createCode() {
code = "";
var codeLength = 6;//驗證碼的長度
var checkCode = document.getElementById("checkCode");
var selectChar = new Array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9,'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');//所有候選組成驗證碼的字元，當然也可以用中文的
for (var i = 0; i < codeLength; i++) {
var charIndex = Math.floor(Math.random() * 36);
code += selectChar[charIndex];
}
//alert(code);
if (checkCode) {
checkCode.className = "code";
checkCode.value = code;
}
}
function validate() {
var inputCode = document.getElementById("input1").value;
if (inputCode.length <= 0) {
alert("請輸入驗證碼！");
} else if (inputCode != code) {
alert("驗證碼輸入錯誤！");
createCode();//刷新驗證碼
} else {
alert("^-^ OK");
}
}
</script>
</head>
<body onload="createCode()">
<form action="#">
<input type="text" id="input1" /> <input type="text" onclick="createCode()" readonly="readonly" id="checkCode" class="unchanged" style="width: 80px" /><br />
<input id="Button1" onclick="validate();" type="button" value="確定" />
</form>
</body>
</html>
注意別用在實際生產項目中
❾ javascript表單驗證碼怎麼寫
驗證碼javascript是實現不了的，只能使用其他變成語言比如php、。net、jsp等
❿ 用js進行手機號驗證碼要求長度是11位,只能是數字怎麼做,能不用正則表達式么
首先關於手機號長度可以使用js判斷用戶輸入長度，如果不等於11位可以進行相關提示，具體可參考以下代碼
<!DOCTYPEhtml>
<html>
<head>
<metacharset="utf-8">
<title>標題</title>
<scripttype="text/javascript">
window.onload=function(){
varaIpt=document.getElementsByTagName('input')
aIpt[1].onclick=function(){
if((aIpt[0].value).length==11){
alert("您輸入的長度是11位")
}
else{
alert("請進行正確的輸入")
}
}
}
</script>
</head>
<body>
<inputtype="text"placeholder="請輸入11位數字"name="">
<inputtype="button"value="跳轉"name="">
</body>
</html>
判斷用戶輸入的是不是數字，可以使用isNaN進行判斷，具體可以參考以下代碼
<!DOCTYPEhtml>
<html>
<head>
<metacharset="utf-8">
<title>標題</title>
<scripttype="text/javascript">
window.onload=function(){
varaIpt=document.getElementsByTagName('input')
aIpt[1].onclick=function(){
if((aIpt[0].value).length==11&&isNaN(aIpt[0].value)==false){
alert("您輸入的長度是11位")
}
else{
alert("請進行正確的輸入")
}
}
}
</script>
</head>
<body>
<inputtype="text"placeholder="請輸入11位數字"name="">
<inputtype="button"value="跳轉"name="">
</body>
</html>
前面的代碼作為判斷長度的單獨展示，後面的代碼，可以完整的展示限制長度和判斷數字