Html：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE-edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title></title>
<link rel="stylesheet" href="../css/bootstrap.min.css">
<link rel="stylesheet" href="../css/open-iconic-bootstrap.min.css">
<link rel="stylesheet" href="../css/icomoon.css">
<link rel="stylesheet" href="../css/style.css">
</head>
<body>
<section class="probootstrap-section">
<div class="container">
<div class="row">
<div class="col-md-6">
<form action="#" method="post" class="probootstrap-form mb-5" id="form">
<div class="form-group">
<label for="l_username">用户名</label>
<input type="text" class="form-control" id="username" name="username" placeholder="请输入用户名">
</div>
<div class="form-group">
<label for="l_pwd">密码</label>
<input type="password" class="form-control" id="pwd" name="pwd" placeholder="请输入密码">
</div>
<div class="form-group">
<label for="l_pwd">确认密码</label>
<input type="password" class="form-control" id="pwdAgain" name="pwdAgain" placeholder="请输入确认密码">
</div>
<div class="form-group">
<label for="l_email">邮箱</label>
<input type="email" class="form-control" id="email" name="email" placeholder="请输入Email">
</div>
<div class="form-group">
<label for="l_checkCode">验证码</label>
<input type="text" class="form-control" id="checkCode" name="checkCode" placeholder="请输入验证码">
<div class="code" class="form-control">
<canvas id="canvas" width="100" height="36"></canvas>
</div>
</div>
<div class="form-group">
<input type="submit" class="btn btn-primary" id="submit" name="submit" value="提交">
</div>
</form>
</div>
</div>
</div>
</section>
<script src="../js/jquery-3.7.1.js"></script>
<script src="../js/checkCode.js"></script>
<script src="../js/popper.min.js"></script>
<script src="../js/bootstrap.min.js"></script>
<script src="../js/bootstrapValidator.min.js"></script>
<script>
$(document).ready(function () {
$('#form').bootstrapValidator({
// 默认的提示消息
message: 'This value is not valid',
// 表单框里右侧的icon
feedbackIcons: {
valid: 'glyphicon glyphicon-ok',
invalid: 'glyphicon glyphicon-remove',
validating: 'glyphicon glyphicon-refresh'
},
submitHandler: function (validator, form, submitButton) {
// 表单提交成功时会调用此方法
// validator: 表单验证实例对象
// form jq对象 指定表单对象
// submitButton jq对象 指定提交按钮的对象
},
fields: {
username: {
message: '用户名验证失败',
validators: {
notEmpty: {
message: '用户名不能为空'
},
stringLength: { //长度限制
min: 6,
max: 18,
message: '用户名长度必须在6到18位之间'
},
regexp: { //正则表达式
regexp: /^[a-zA-Z0-9_]+$/,
message: '用户名只能包含大写、小写、数字和下划线'
}
}
},
pwd: {
message: '密码验证失败',
validators: {
notEmpty: {
message: '密码不能为空'
},
stringLength: { //长度限制
min: 6,
max: 18,
message: '密码长度必须在6到18位之间'
},
identical: { //比较是否相同
field: 'pwdAgain', //需要进行比较的input name值
message: '两次密码不一致'
}
}
},
pwdAgain: {
message: '确认密码验证失败',
validators: {
identical: { //比较是否相同
field: 'pwd', //需要进行比较的input name值
message: '两次密码不一致'
}
}
},
email: {
message: '邮箱验证失败',
validators: {
emailAddress:{
message: "邮箱格式不正确"
}
}
},
checkCode:{
message: '验证码验证失败',
validators: {
notEmpty: {
message: '验证码不能为空'
}
}
}
}
});
});
</script>
</body>
</html>Js：
var show_num = [];//将要生成的随机验证码
draw(show_num);
/**点击验证码重新生成*/
$("#canvas").on('click', function () {
draw(show_num);
});
function randomColor() {//得到随机的颜色值==>把颜色设置为黑色，看的清楚
var r = Math.floor(0);
var g = Math.floor(0);
var b = Math.floor(0);
return "rgb(" + r + "," + g + "," + b + ")";
}
function draw(show_num) {
var canvas_width = $('#canvas').width();
var canvas_height = $('#canvas').height();
var canvas = document.getElementById("canvas");//获取到canvas的对象，演员
var context = canvas.getContext("2d");//获取到canvas画图的环境，演员表演的舞台
canvas.width = canvas_width;
canvas.height = canvas_height;
var sCode = "1,2,3,4,5,6,7,8,9,0";
var aCode = sCode.split(",");
var aLength = aCode.length;//获取到数组的长度
for (var i = 0; i <= 3; i++) {
var j = Math.floor(Math.random() * aLength);//获取到随机的索引值
var deg = Math.random() * 30 * Math.PI / 180;//产生0~30之间的随机弧度
var txt = aCode[j];//得到随机的一个内容
show_num[i] = txt.toLowerCase();
var x = 10 + i * 20;//文字在canvas上的x坐标
var y = 20 + Math.random() * 8;//文字在canvas上的y坐标
context.font = "bold 26px 楷体";
context.translate(x, y);
context.rotate(deg);
context.fillStyle = randomColor();
context.fillText(txt, 0, 0);
context.rotate(-deg);
context.translate(-x, -y);
}
for (var i = 0; i <= 5; i++) { //验证码上显示线条
context.strokeStyle = randomColor();
context.beginPath();
context.moveTo(Math.random() * canvas_width, Math.random() * canvas_height);
context.lineTo(Math.random() * canvas_width, Math.random() * canvas_height);
context.stroke();
}
for (var i = 0; i <= 30; i++) { //验证码上显示小点
context.strokeStyle = randomColor();
context.beginPath();
var x = Math.random() * canvas_width;
var y = Math.random() * canvas_height;
context.moveTo(x, y);
context.lineTo(x + 1, y + 1);
context.stroke();
}
//为了测试方便不用每次都输入验证码
//$("#checkCode").val(show_num.join(""));
}