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[Java教程]jQuery实现密码强度检测


jQuery普遍运用于JAVA_WEB前端,可以说jQuery的运用无处不在,学好jQuery,对于一个程序员来说是必由之路。下面简单介绍一下jQuery实现密码强度检测。

如图所示:

核心代码:

第一步:css样式:

/** 清除内外边距 **/body, h1, h2, h3, h4, h5, h6, hr, p,blockquote, /* structural elements 结构元素 */dl, dt, dd, ul, ol, li, /* list elements 列表元素 */pre, /* text formatting elements 文本格式元素 */form, fieldset, legend, button, input, textarea, /* form elements 表单元素 */ /* table elements 表格元素 */img/* img elements 图片元素 */{ border:medium none; margin: 0; padding: 0;}input::-ms-clear{display:none;}/** 设置默认字体 **/body,button, input, select, textarea {  font-family:微软雅黑, Verdana, Geneva, sans-ser;  font-size:14px;  color:#666;}h1, h2, h3, h4, h5, h6 { font-size: 100%; }em{font-style:normal;}/** 重置列表元素 **/ul, ol, li { list-style: none outside; display:block; overflow:hidden; }/** 重置超链接元素 **/a { text-decoration: none; color:#333;}/** 重置图片元素 **/img{ border:0px;}/** 重置表格元素 **//**************会员注册 start*********************/.ywz_zhuce_wenzi{float:left; width:1000px; text-align:left; height:30px;line-height:30px; font-weight:bold; font-size:16px; color:#333; }.ywz_zhuce_zou1{ float:left; width:1000px; height:690px; border:1px #dcdcdc solid;}.ywz_zhuce_huanying{ float:left; width:600px; margin-left:61px; margin-top:36px; font-size:16px; font-weight:bold;color:#797979;}.ywz_zhuce_bao{ float:left; width:640px; height:360px; padding: 30px 0px 0px 66px; border-right:1px dashed #e5e5e5;} .ywz_zhucexiaobo{ float:left; width:620px; padding-bottom:10px;padding-top:5px; margin-left:20px;}.ywz_zhuce_youjian{ float:left; width:100px; margin: 5px 0 0 0; font-size:14px; text-align:right; }/*用户*/.ywz_hong{ color:#ff4e00; font-size:12px; font-family:"宋体";}/*加红*/.ywz_zhuce_kuangzi{ float:left; width:226px; height:38px; color:#171717;}.ywz_zhuce_kuangwenzi2{float:left;  color:#3e3e3e; width:210px; height:36px; border: 1px solid #C4C4C4; padding:0 15px 0 15px; line-height:35px; _padding-left:20px;outline:medium;}.ywz_zhuce_kuangwenzib{float:left; border: 1px solid #C4C4C4; color:#3e3e3e; width:210px; height:36px; padding: 0 15px 0 15px; line-height:35px; _padding-left:20px;outline:medium;}.ywz_zhuce_input{float:left; color:#3e3e3e; width:126px; height:36px; border:0; padding-left:25px; line-height:35px; _padding-left:20px;outline:medium; border-left: 1px solid #c4c4c4; border-top: 1px solid #c4c4c4;border-bottom: 1px solid #ebebeb; border-right: 1px solid #ebebeb; line-height:36px; color:#b6b6b6;}.ywz_zhuce_yuo{ float:right; width:240px; margin-top:60px;}.ywz_zhuce_yongkuang1{ font-size:16px; font-weight:bold; color:#010101; clear:both; text-align:left; text-indent:22px;}.ywz_zhuce_hongkuang{ float:left; margin-top:15px; background:#fe7213;}.ywz_zhuce_hongkuang a{ float:left; font-size:14px; background: #A2A2A2; width:137px; height:34px; font-weight:bold; color:#FFF; line-height:34px;}.ywz_zhuce_hongkuang a:hover{ float:left; background: #C00; width:137px; height:34px; color:#FFF; }.ywz_zhuce_denglusanjiao{ float:left; margin-top:12px; margin-left:35px; color:#fff;}.ywz_zhuce_muqian{ float:left; width:205px; margin-top:30px; font-size:12px; color:#666; text-align:left;}.ywz_zhuce_hongzi{ color:#ff6701;}.ywz_zhuce_kuangwenzi3{ float:left; background: url(../images/zhuce_kuang_03.jpg) no-repeat; border:0; color:#3e3e3e; width:222px; height:30px; padding-left:2px; padding-top:12px;}.ywz_tc_dl{ float:left; background:url(../images/denglu-yaoshi_03.jpg) no-repeat; width:20px; height:30px;}.ywz_zhuce_yongyu{ float:left; color:#468e9d; font-size:12px; padding-left:15px; margin-top:10px; _padding-left:5px; }/*后面的文字*/.ywz_zhuce_yongyu a{ color:#468e9d; }.ywz_zhuce_yongyu a:hover{ color:#468e9d; text-decoration:underline;}.ywz_zhuce_yongyu1{ float:left; color: #C00 ; font-size:12px; padding-left:10px; margin-top:10px; _padding-left:0px; }/*后面的文字*/.ywz_zhuce_yongyu1 a{ color:#C00; text-decoration:none; }.ywz_zhuce_yongyu1 a:hover{ color:#C00; }.ywz_zhuce_xiaoxiaobao{ float:left; width:226px; }.ywz_zhuce_hongxian{ float:left; background:#ff3300; width:62px; height:4px; margin-top:5px; margin-left:5px; _margin-top:0px;_height:2px; font-size:0px;}.ywz_zhuce_hongxian2{ float:left; background: #099; width:62px; height:4px; margin-top:5px; margin-left:5px; _margin-top:0px;_height:2px; font-size:0px;}.ywz_zhuce_hongxian3{ float:left; background: #060; width:62px; height:4px; margin-top:5px; margin-left:5px; _margin-top:0px;_height:2px; font-size:0px;}.ywz_zhuce_huixian{ float:left; background:#d6d3d3; width:62px; height:4px; margin-top:5px; _margin-top:0px; margin-left:5px; _height:2px;font-size:0px;}.ywz_zhuce_hongxianwenzi{ float:left; width:62px; margin-left:5px; text-align:center; color:#b0adad; font-size:12px; }.ywz_zhuce_tongyi{ float: right; width:530px; margin-bottom:10px; }/*同意内面*/.ywz_zhuce_dui{ float:left; width:10px; height:10px;}.ywz_zhuce_tongyiwenzi{ float:left; font-size:12px; color:#555; padding-bottom:10px;}/*同意*/.ywz_zhuce_lanseai{ color:#1190ae;}.ywz_jhbg1{ background: url(../images/DENGSE_03.jpg) no-repeat center top; width:7px; height:12px; _padding-top:5px; _height:2px; _font-size:0px; *height:16px; display: inline-block; }.ywz_zhuce_bgkuang{float:right; width:520px; text-align:center;}.ywz_zhuce_tijiao{ float:left; background:#e6343c; width:200px; height:40px; }.ywz_zhuce_tijiao a{ float:left; background: #e6343c; width:2020px; height:40px; color:#FFF; font-size:16px; line-height:40px; }.ywz_zhuce_tijiao a:hover{ float:left; background:#d52028; width:200px; height:40px; }.ywz_zhuce_zhujiwenzi{ float:left; font-size:18px; font-weight:bold; color:#fff; padding-left:55px; padding-top:15px;}.register_hy2{ margin-top: 6px; float:left; height:30px; line-height:30px !important; font-family:微软雅黑,Verdana, Geneva, sans-serif;}/*弹窗注册*/.reg_succes1 a{ color:#FFF; line-height:26px;}  /*人头*/.ywz_zhuce_kuangwenzi{ float:left; background: url(../images/deng1.jpg) no-repeat; border:0; color:#3e3e3e; width:221px; height:40px; line-height:35px; padding-left:25px;  _padding-left:20px; outline:medium; }/*邮箱*/.ywz_zhuce_kuangwenzi0{ float:left; background: url(../images/zhuce_kuang_03.jpg) no-repeat; border:0; color:#3e3e3e; width:220px; height:35px; line-height:35px; padding-left:5px; _padding-left:7px;outline:medium;}/*钥匙*/.ywz_zhuce_kuangwenzi1{ float:left; background: url(../images/dengl_06.jpg) no-repeat; border:0; color:#3e3e3e; width:210px; height:40px; line-height:35px; padding-left:25px; _padding-left:20px;outline:medium;}/*框*/.ywz_zhuce_denglu{ float:left; color:#468e9d; font-size:12px; padding-top:10px; padding-left:15px; _padding-left:0px;}.ywz_zhuce_denglu a{ color:#468e9d; }.ywz_zhuce_denglu a:hover{ color:#468e9d; text-decoration: underline;}.ywz_zhuce_denglulo{ float:left; width:110px; color:#949494; margin-top:15px; font-size:12px; }.ywz_zhuce_denglu1{ color:#468e9d; font-size:12px; }.ywz_zhuce_denglu1 a{ color:#468e9d; }.ywz_zhuce_denglu1 a:hover{ color:#468e9d; text-decoration: underline;}.ywz_zhuce_denglukuang{ float:left; width:500px; margin-top:0px;height:40px; text-align:center;}.dcdl{width:500px; background:#e6343c; width:182px; height:40px; line-height:40px;text-align:center; color:#fff; font-size:16px; font-weight:bold; border:none;}.dcdl:hover{ background:#c1171f;}.ywz_zhuce_kuangzilu{ float:left; width:105px;}.ywz_zhuce_kuangzidenglu{ float:left; background: url(../images/dengloo_03.jpg) no-repeat; border:0px; color:#3e3e3e; width:120px; height:37px; line-height:30px; padding-left:5px;outline:medium;}/*验证码*/.ywz_denglu_yanzheng{ float:left; margin-left:15px; padding-left:8px; _margin-left:1px; _padding-left:2px; }.ywz_zhuce_dengbao{ float:left; width:640px; height:280px; padding: 30px 0px 0px 66px; border-right:1px dashed #e5e5e5;} 

第二步:导入图片images

第三步:导入js标签库(同时导入JQuery.min)

   $('#tbPassword').focus(function () {      $('#pwdLevel_1').attr('class', 'ywz_zhuce_hongxian');      $('#tbPassword').keyup();    });    $('#tbPassword').keyup(function () {      var __th = $(this);      if (!__th.val()) {        $('#pwd_tip').hide();        $('#pwd_err').show();        Primary();        return;      }      if (__th.val().length < 6) {        $('#pwd_tip').hide();        $('#pwd_err').show();        Weak();        return;      }      var _r = checkPassword(__th);      if (_r < 1) {        $('#pwd_tip').hide();        $('#pwd_err').show();        Primary();        return;      }      if (_r > 0 && _r < 2) {        Weak();      } else if (_r >= 2 && _r < 4) {        Medium();      } else if (_r >= 4) {        Tough();      }      $('#pwd_tip').hide();      $('#pwd_err').hide();    });       function Primary() {      $('#pwdLevel_1').attr('class', 'ywz_zhuce_huixian');      $('#pwdLevel_2').attr('class', 'ywz_zhuce_huixian');      $('#pwdLevel_3').attr('class', 'ywz_zhuce_huixian');    }    function Weak() {      $('#pwdLevel_1').attr('class', 'ywz_zhuce_hongxian');      $('#pwdLevel_2').attr('class', 'ywz_zhuce_huixian');      $('#pwdLevel_3').attr('class', 'ywz_zhuce_huixian');    }    function Medium() {      $('#pwdLevel_1').attr('class', 'ywz_zhuce_hongxian');      $('#pwdLevel_2').attr('class', 'ywz_zhuce_hongxian2');      $('#pwdLevel_3').attr('class', 'ywz_zhuce_huixian');    }    function Tough() {      $('#pwdLevel_1').attr('class', 'ywz_zhuce_hongxian');      $('#pwdLevel_2').attr('class', 'ywz_zhuce_hongxian2');      $('#pwdLevel_3').attr('class', 'ywz_zhuce_hongxian3');    }    function checkPassword(pwdinput) {      var maths, smalls, bigs, corps, cat, num;      var str = $(pwdinput).val()      var len = str.length;      var cat = /.{16}/g      if (len == 0) return 1;      if (len > 16) { $(pwdinput).val(str.match(cat)[0]); }      cat = /.*[\u4e00-\u9fa5]+.*$/      if (cat.test(str)) {        return -1;      }      cat = /\d/;      var maths = cat.test(str);      cat = /[a-z]/;      var smalls = cat.test(str);      cat = /[A-Z]/;      var bigs = cat.test(str);      var corps = corpses(pwdinput);      var num = maths + smalls + bigs + corps;      if (len < 6) { return 1; }      if (len >= 6 && len <= 8) {        if (num == 1) return 1;        if (num == 2 || num == 3) return 2;        if (num == 4) return 3;      }      if (len > 8 && len <= 11) {        if (num == 1) return 2;        if (num == 2) return 3;        if (num == 3) return 4;        if (num == 4) return 5;      }      if (len > 11) {        if (num == 1) return 3;        if (num == 2) return 4;        if (num > 2) return 5;      }    }    function corpses(pwdinput) {      var cat = /./g      var str = $(pwdinput).val();      var sz = str.match(cat)      for (var i = 0; i < sz.length; i++) {        cat = /\d/;        maths_01 = cat.test(sz[i]);        cat = /[a-z]/;        smalls_01 = cat.test(sz[i]);        cat = /[A-Z]/;        bigs_01 = cat.test(sz[i]);        if (!maths_01 && !smalls_01 && !bigs_01) { return true; }      }      return false; }