Angular 输入框实现自定义验证功能

(编辑：jimmy 日期: 2024/10/1 浏览：2)

此插件使用angular.js、JQuery实现。（jQuery的引入需在angular 之前）

　　用户可以在输入框输入数据后验证必填项、整数型、浮点型验证。

　　如果在form 里面的输入框验证，可以点击提交按钮后，实现必填项验证。

效果图如下：

(1)验证未通过时，背景标红等样式为　　

input.ng-invalid, select.ng-invalid {
   background-color: #ee82ee !important;
   border: 1px solid #CCC;
  }
  .qtip {
   position: absolute;
   max-width: 260px;
   display: none;
   min-width: 50px;
   font-size: 10.5px;
   line-height: 12px;
   direction: ltr;
  }
  .qtip-content {
   position: relative;
   padding: 5px 9px;
   overflow: hidden;
   text-align: left;
   word-wrap: break-word;
  }
  .qtip-rounded, .qtip-tipsy {
   -moz-border-radius: 5px;
   -webkit-border-radius: 5px;
   border-radius: 5px;
  }
  .qtipmodal-ie6fix {
   position: absolute !important;
  }
  .box-shadow-tips {
   background-color: #F63;
   border-color: #F5A88F;
   color: white;
   -moz-box-shadow: 2px 2px 2px #969696;
   -webkit-box-shaow: 2px 2px 2px #969696;
   box-shadow: 2px 2px 2px #969696;
  }

　　因为angular.js 内置验证未通过时，会自动为标签增加 .ng-invalid 样式，因为这里重写此样式

　input.ng-invalid, select.ng-invalid {
 　　background-color: #ee82ee !important;
 　　border: 1px solid #CCC;
　　}

　（2）HTML 代码如下

<body ng-app="myApp">
<form name="baseInfoForm">
 <div ng-controller="testCtrl">
  <input type="text" ng-model="age" my-valid="r"><br>
  <input type="text" ng-model="name" my-valid="int fn:certCheck"><br>
  <input type="button" value="提交" ng-click="submit()">
 </div>
</form>
</body>

(3)此插件使用 directive myValid 实现

app.directive('myValid', ['$parse', 'uiTipsFactory', 'uiValidFactory', function ($parse, tips, valid) {
  var uiValidAttrIdName = 'ui-valid-id';
  return {
   restrict: 'A',
   require: 'ngModel',
   link: function (scope, el, attrs, ctrl) {
    var validId = el.attr(uiValidAttrIdName);
    if (!validId) {
     validId = Math.guid();
     el.attr(uiValidAttrIdName, validId);
    }
    var getRules = function () {
     return attrs.myValid;
    };
    var lastOldRules;
    var validFn = function (value, oldRules) {
     var sp = '_';
     var rules = getRules();
     var r = valid.check(value, rules, scope, attrs.uiValidTips);
     if (lastOldRules && !oldRules) {
      oldRules = lastOldRules;
     }
     if (r.flag && oldRules) {
      rules = rules "htmlcode">

app.factory('uiValidFactory', ['$parse', 'uiTipsFactory', function ($parse, tips) {
  return {
   check: function (val, rules, $scope, defaultTips, extendParam) {
    if (!rules) {
     return {
      flag: true
     };
    }
    var rulesArr = rules.split(' '),
      isBlank = val === null || val === undefined || val === '' || ('' + val === '');
    //如果不是必填项 且没有输入值 则清除提示框
    if ($.inArray('r', rulesArr) === -1 && isBlank) {
     return {
      flag: true
     }
    }
    var i = 0, len = rulesArr.length;
    for (; i < len; i++) {
     var rule = rulesArr[i];
     if (!rule) {
      continue;
     }
     var flag = true;
     if ('r' === rule) {
      //如果是必填项，有值 返回true
      flag = !isBlank;
     } else if (rule.contains(':')) {
      //如果校验规则是 fn:ctrl.certCheck
      flag = this.checkRule(val, rule.split(/:/), $scope, extendParam);
     } else {
      //校验 规则是 int 用正则匹配 数字 邮箱 长度
      var pat = this.pats[rule];
      if (pat instanceof RegExp) {
       if (angular.isString(val)) {
        flag = this.mat(val, pat);
       }
      } else if (angular.isFunction(pat)) {
       flag = pat(val);
      } else {
       flag = false;
      }
     }
     //这是干什么的呢
     if (angular.isString(flag)) {
      return {
       flag: false,
       msg: flag,
       rule: rule
      }
     }
     if (flag === false) {
      var msg = this.getMsg(rule, defaultTips) || this.getMsg('tips.valid');
      console.log(msg);
      return {
       flag: false,
       msg: msg,
       rule: rule
      }
     }
    }
    return {
     flag: true
    }
   },
   checkRule: function (val, ruleArr, $scope, extendParam) {
    //ruleArr fn:certCheck
    var rule = ruleArr[0];
    if (rule === 'fn') {
     fnName = ruleArr[1];//指定被调函数的名字 certCheck
     var fn = $parse(fnName)($scope);
     if (!fn) {
      return true;
     }
     return fn.call($scope, val, extendParam);
    } else {
     return true;
    }
   },
   checkValidForm: function (formName) {
    //只检查必填项
    //使用属性筛选器 获得里面所有的元素
    var formContext = $('form[name="{0}"],[ng-form="{0}"],[data-ng-form="{0}"]'.format(formName)),
      validList = formContext.find('[my-valid]');//validList 不是数组，是伪数组
    if (!validList.length) {
     return;
    }
    var that = this,
      validFlags = [];
    validList.each(function () {
       var ele = $(this),
         val = ele.val(),
         ruleStr = ele.attr('my-valid');
       if (!ruleStr) {
        return true;
       }
       if (angular.isString(val)) {
        val = val.trim();
       }
       var validRules = ruleStr.split(' ');
       if ($.inArray('r', validRules) != -1 && !val) {
        var modelValue = ele.attr('ng-model') || ele.attr('data-ng-model');
        validFlags.push(modelValue);
        tips.on(ele, that.getMsg('r'));
       }
      }
    );
    return validFlags;
   },
   mat: function (val, pat) {
    if (!pat) {
     return;
    }
    return pat.test(val);
   }
   ,
   getMsg: function (rule, tips) {
    tips = tips || '';
    //可以在界面上直接写 tips
    if (tips && tips.contains(':')) {
     return tips;
    }
    var msg = this.msgs[rule];
    if (msg) {
     var params0 = tips.contains(':') "htmlcode">

app.factory('uiTipsFactory', function () {
  return {
   filterClass: function (ele, invalid) {
    if (invalid) {
     //如果验证不通过
     ele.removeClass('ng-valid').removeClass('ng-pristine').addClass('ng-invalid').addClass('ng-dirty');
    } else {
     ele.removeClass('ng-invalid').addClass('ng-valid');
    }
   },
   on: function (ele, msg) {
    var lastTip = ele.data('last-tip');
    if (lastTip && lastTip === msg) {
     return;
    }
    ele.data('last-tip', msg);
    this.filterClass(ele, true);
    var offset = ele.offset();
    if (!offset.top && !offset.left && ele.is('hidden')) {
     offset = ele.show().offset();
    }
    var id = ele.attr('ui-valid-id');
    if (!id) {
     id = Math.guid();
     ele.attr('ui-valid-id', id);
    }
    if (id.contains('.')) {
     id = id.replace(/\./g, '_');
    }
    var top = offset.top,
      left = offset.left;
    var getTips = function () {
     var _tip = $('#vtip_' + id);
     if (_tip.length) {
      _tip.html(msg).css({
       'display': 'none',
       'top': top + 'px',
       'left': left + ele.width() + 10 + 'px'
      });
     } else {
      var html = '<div id="vtip_' + id + '" class="vtip qtip qtip-rounded box-shadow-tips">' +
        '<div class="qtip-content">' + msg + '</div>';
      $(html).css({
       'display': 'none',
       'position': 'absolute',
       'top': top + 'px',
       'left': left + ele.width() + 10 + 'px'
      }).appendTo($('body'));
     }
    };
    var bindTipsShow = function () {
     getTips();
     ele.unbind('mouseenter mouseleave').bind('mouseenter', function () {
      var _tip = $('#vtip_' + id);
      if (_tip.is(':hidden')) {
       _tip.show();
      }
     }).bind('mouseleave', function () {
      $('#vtip_' + id).hide();
     });
    };
    bindTipsShow();
   },
   off: function (ele) {
    ele.data('last-tip', '');
    this.filterClass(ele);
    var id = ele.attr('ui-valid-id');
    if (!id) {
     return;
    }
    if (id.contains('.')) {
     id = id.replace(/\./g, '_');
    }
    $('#vtip_' + id).remove();
    ele.unbind('mouseenter mouseleave');
   }
  }
 });


　　 1、验证不通过，增加背景色，元素css处理如下


 ele.removeClass('ng-valid').removeClass('ng-pristine').addClass('ng-invalid').addClass('ng-dirty');


　　 验证通过，CSS处理如下　　


　ele.removeClass('ng-invalid').addClass('ng-valid');


 
2、背景提示语，则是在body上增加一个div层。
(6)其他相关代码


var app = angular.module('myApp', []);
 app.controller('testCtrl', ['$scope', 'uiValidFactory', function ($scope, uiValidFactory) {
    $scope.certCheck = function (val) {
     if (val > 32) {
      return "数字太大了";
     }
     return true;
    };
    $scope.submit = function () {
     if (!uiValidFactory.checkValidForm($scope.baseInfoForm.$name)) {
     }
    };
   }]
 );
 Math.guid = function () {
  var a = "", b = 1;
  for (; b <= 32; b++) {
   var c = Math.floor(Math.random() * 16).toString(16);
   a += c;
   if (b === 8 || b === 12 || b === 16 || b === 20) {
    a += '-';
   }
  }
  return a;
 };
 String.prototype.contains = String.prototype.contains || function (a) {
  return this.indexOf(a) != -1;
 };
 String.prototype.format = String.prototype.format || function () {
  var a = Array.prototype.slice.call(arguments);
  return this.replace(/\{(\d+)}/g, function (c, b) {
   return a[b];
  })
 };


　　　整个代码如下：


<!DOCTYPE html>
<html>
<head lang="en">
 <meta charset="UTF-8">
 <title></title>
 <script src="/UploadFiles/2021-04-02/jquery-1.11.1.js">



        
            上一篇：RequireJs的使用详解
            下一篇：js实现九宫格的随机颜色跳转

Angular 输入框实现自定义验证功能

一句话新闻

最新资源