本文实例为大家分享了js实现随机五位数验证码的具体代码，供大家参考，具体内容如下
功能展示：
点击按钮，随机生成数字+大小写字母验证码
所有代码：
<!DOCTYPE html>
<html>
<head>
<meta charset=\"UTF-8\">
<title>随机生成验证码</title>
</head>
<style>
/*验证码*/
.upload-awrp {
overflow: hidden;
margin: 120px 0;
}
.code {
font-family: Arial;
font-style: italic;
font-size: 30px;
border: 0;
padding: 2px 3px;
letter-spacing: 3px;
font-weight: bolder;
float: left;
cursor: pointer;
width: 150px;
height: 60px;
line-height: 60px;
text-align: center;
vertical-align: middle;
border: 1px solid #6D6D72;
}
</style>
<body>
<!--随机验证码-->
<div id=\"check-code\" style=\"overflow: hidden;\">
<div class=\"code\" id=\"data_code\"></div>
</div>
<script src=\"js/jquery.min.js\"></script>
<script type=\"text/javascript\">
$.fn.code_Obj = function(o) {
var _this = $(this);
var options = {
code_l: o.codeLength,//验证码长度
codeChars: [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\',
\'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\'
],
codeColors: [\'#f44336\', \'#009688\', \'#cddc39\', \'#03a9f4\', \'#9c27b0\', \'#5e4444\', \'#9ebf9f\', \'#ffc8c4\', \'#2b4754\', \'#b4ced9\', \'#835f53\', \'#aa677e\'],
code_Init: function() {
var code = \"\";
var codeColor = \"\";
var checkCode = _this.find(\"#data_code\");
for(var i = 0; i < this.code_l; i++) {
var charNum = Math.floor(Math.random() * 52);
code += this.codeChars[charNum];
}
for(var i = 0; i < this.codeColors.length; i++) {
var charNum = Math.floor(Math.random() * 12);
codeColor = this.codeColors[charNum];
}
console.log(code);
if(checkCode) {
checkCode.css(\'color\', codeColor);
checkCode.className = \"code\";
checkCode.text(code);
checkCode.attr(\'data-value\', code);
}
}
};
options.code_Init();//初始化验证码
_this.find(\"#data_code\").bind(\'click\', function() {
options.code_Init();
});
};
$(\'#check-code\').code_Obj({
codeLength: 5
});
</script>
</body>
</html>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
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