BootstrapValidator是一款非常好用的表单验证插件，通过友好的错误提示能增加用户体验。
bootstrapvalidator源码下载
既然是表单验证，那我们最常用的就是用户登录界面，下面来看看测试代码：
<!DOCTYPE html> <html lang="en"> <head> <!-- Required meta tags --> <meta charset="utf-8"> <meta content="width=device-width, initial-scale=1, shrink-to-fit=no"> <!-- Twitter --> <meta content="@themepixels"> <meta content="@themepixels"> <meta content="summary_large_image"> <meta content="Starlight"> <meta content="Premium Quality and Responsive UI for Dashboard."> <meta content="http://themepixels.me/starlight/img/starlight-social.png"> <!-- Facebook --> <meta property="og:url" content="http://themepixels.me/starlight"> <meta property="og:title" content="Starlight"> <meta property="og:description" content="Premium Quality and Responsive UI for Dashboard."> <meta property="og:image" content="http://themepixels.me/starlight/img/starlight-social.png"> <meta property="og:image:secure_url" content="http://themepixels.me/starlight/img/starlight-social.png"> <meta property="og:image:type" content="image/png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="600"> <!-- Meta --> <meta content="Premium Quality and Responsive UI for Dashboard."> <meta content="ThemePixels"> <title>欢迎使用</title> <!-- vendor css --> <link href="https://www.jb51.net/lib/font-awesome/css/font-awesome.css"> <link href="https://www.jb51.net/lib/Ionicons/css/ionicons.css"> <!-- Starlight CSS --> <link href="https://www.jb51.net/css/starlight.css" > <!-- 将下载好的BootstrapValidator js,css文件导入，配合bootstrap插件使用 --> <link href="https://www.jb51.net/vendor/bootstrap/css/bootstrap.css" /> <link href="https://www.jb51.net/dist/css/bootstrapValidator.css" /> <script type="text/javascript" src="https://www.jb51.net/vendor/jquery/jquery.min.js"></script> <script type="text/javascript" src="https://www.jb51.net/vendor/bootstrap/js/bootstrap.min.js"></script> <script type="text/javascript" src="https://www.jb51.net/dist/js/bootstrapValidator.js"></script> </head> <body> <div> <div> <div><span>欢迎使用</span> </div> <form> <div> <input type="text" placeholder="请输入账号"> </div><!-- form-group --> <div> <input type="password" placeholder="请输入密码"> <a href=""external nofollow" tx-info tx-12 d-block mg-t-10">忘记密码？</a> </div><!-- form-group --> <div> <input type="text" placeholder="验证码"> <div> <canvas></canvas> </div> </div> <button type="submit">登录</button> <div>还没有注册账号？ <a href="https://www.jb51.net/page-signup.html">注册</a></div> </form> </div><!-- login-wrapper --> </div><!-- d-flex --> <script src="https://www.jb51.net/lib/popper.js/popper.js"></script> <script src="https://www.jb51.net/lib/bootstrap/bootstrap.js"></script> <script> 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 = $('#canvas').height(); var canvas = document.getElementById("canvas");//获取到canvas的对象，演员 var context = canvas.getContext("2d");//获取到canvas画图的环境，演员表演的舞台 canvas.width = canvas_width; canvas.height = canvas_height; var sCode = "1,2,3,4,5,6,7,8,9,0"; var aCode = sCode.split(","); var aLength = aCode.length;//获取到数组的长度 for (var i = 0; i <= 3; i++) { var j = Math.floor(Math.random() * aLength);//获取到随机的索引值 var deg = Math.random() * 30 * Math.PI / 180;//产生0~30之间的随机弧度 var txt = aCode[j];//得到随机的一个内容 show_num[i] = txt.toLowerCase(); var x = 10 + i * 20;//文字在canvas上的x坐标 var y = 20 + Math.random() * 8;//文字在canvas上的y坐标 context.font = "bold 26px 楷体"; context.translate(x, y); context.rotate(deg); context.fillStyle = randomColor(); context.fillText(txt, 0, 0); context.rotate(-deg); context.translate(-x, -y); } for (var i = 0; i <= 5; i++) { //验证码上显示线条 context.strokeStyle = randomColor(); context.beginPath(); context.moveTo(Math.random() * canvas_width, Math.random() * canvas_height); context.lineTo(Math.random() * canvas_width, Math.random() * canvas_height); context.stroke(); } for (var i = 0; i <= 30; i++) { //验证码上显示小点 context.strokeStyle = randomColor(); context.beginPath(); var x = Math.random() * canvas_width; var y = Math.random() * canvas_height; context.moveTo(x, y); context.lineTo(x + 1, y + 1); context.stroke(); } //为了测试方便不用每次都输入验证码 //$("#checkCodeYZM").val(show_num.join("")); } $(document).ready(function () { //当提交时进行表单验证 代码内容容易看懂 这里不进行注解解释 $('#form').bootstrapValidator({ message: 'This value is not valid', feedbackIcons: { valid: 'glyphicon glyphicon-ok', invalid: 'glyphicon glyphicon-remove', validating: 'glyphicon glyphicon-refresh' }, fields: { username: { message: '用户名验证失败', validators: { notEmpty: { message: '用户名不能为空' }, stringLength: { min: 6, max: 30, message: '用户名必须大于6位且不得超过30位字符' }, } }, password: { message: '密码验证失败', validators: { notEmpty: { message: '密码不能为空' },stringLength: { min: 8, max: 20, message: '密码必须大于8位且不得超过20位字符' }, } }, checkCodeYZM: { message: '验证码验证失败', validators: { notEmpty: { message: '验证码不能为空' } } } } }); }); </script> </body> </html>
下面看看测试效果：
当不输入内容直接提交时，提示不能为空：
当输入字符不符合规定位数时，提示：
可根据需求继续添加表单验证
如果大家还想深入学习，可以点击这里进行学习，再为大家附3个精彩的专题：