javascript制做短信验证码的办法:【var code; window.onload = function creatCode() { code=""; var codeLength = 4; var checkCode = ...}】。
文中作业环境:windows10系统软件、javascript 1.8.5、thinkpad t480计算机。
应用javascript完成登录验证码作用,以下是实际的实现编码:
test.html
<!DOCTYPE html>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
<title>短信验证码</title>
<script src = "checkCode.js"> </script>
</head>
<body>
<div>
<input type = "text" id = "input"/>
<input type = "button" id="code" οnclick="createCode()"/>
<input type = "button" value = "认证" onclick = "validate()"/>
</div>
</body>
</html>
checkCode.js
var code ; //在全局性界定短信验证码
window.onload = function createCode(){
code = "";
var codeLength = 4;//短信验证码长度
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');//随机数字
for(var i = 0; i < codeLength; i ) {//循环系统实际操作
var index = Math.floor(Math.random()*36);//获得随机数字的检索(0~35)
code = random[index];//依据检索获得随机数字加进code上
}
checkCode.value = code;//把code值值赋短信验证码
}
//校检短信验证码
function validate(){
var inputCode = document.getElementById("input").value.toUpperCase(); //获得输入短信验证码并转化为英文大写
if(inputCode.length <= 0) { //若输入短信验证码长度为0
alert("Empty Code!"); //则弹出来请输入验证码
}
else if(inputCode != code ) { //若输入短信验证码与所产生的短信验证码不一致时
alert("Error Code"); //则弹出来短信验证码输错
createCode();//更新短信验证码
document.getElementById("input").value = "";//清除输入框
}
else { //键入恰当时
alert("OK"); //弹出来^-^
}
}
点一下时不会挪位置的代码:
<p class="red"><a href="javascript:;" οnclick="createCode()">看不清楚?</a></p>
强烈推荐学习培训:javascript视频教学
以上就是关于javascript怎么制作短信验证码的具体内容,大量欢迎关注AdminJS其他类似文章!