JavaScript实现随机五位数验证码

时间:2021-04-02 人气:0
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>
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