angularjs 表单密码验证自定义指令实现代码

HTML代码

rush:xhtml;">

required placeholder="请输入密码">

js

rush:js;"> angular.module("Valid",[])

.directive("equalTo",function () {
return {
require: "ngModel",link: function (scope,ele,attrs,ctrl) {

  console.log(s<a href="https://www.jb51.cc/tag/cop/" target="_blank" class="keywords">cop</a>e);//打印当前作用域
  console.log(attrs);//打印当前<a href="https://www.jb51.cc/tag/biaoqian/" target="_blank" class="keywords">标签</a><a href="https://www.jb51.cc/tag/shuxing/" target="_blank" class="keywords">属性</a>列表
  console.log(ctrl);//打印当前ctrl

  var target = attrs["equalTo"];//<a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a><a href="https://www.jb51.cc/tag/zidingyi/" target="_blank" class="keywords">自定义</a>指令<a href="https://www.jb51.cc/tag/shuxing/" target="_blank" class="keywords">属性</a>键值

  if (target) {//判断键是否存在
    s<a href="https://www.jb51.cc/tag/cop/" target="_blank" class="keywords">cop</a>e.$watch(target,function () {//存在启动监听其值
      ctrl.$validate()//每次改变手动<a href="https://www.jb51.cc/tag/diaoyong/" target="_blank" class="keywords">调用</a>验证
    }) 

    // <a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a>当前模型控制器的父控制器FormController
    var targetCtrl = ctrl.$$parentForm[target];//<a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a>指定模型控制器
    console.log(targetCtrl)

    ctrl.$validators.equalTo = function (modelValue,viewVale) {//<a href="https://www.jb51.cc/tag/zidingyi/" target="_blank" class="keywords">自定义</a>验证器<a href="https://www.jb51.cc/tag/neirong/" target="_blank" class="keywords">内容</a>

      var targetValue = targetCtrl.$viewValue;//<a href="https://www.jb51.cc/tag/huoqu/" target="_blank" class="keywords">获取</a>password的输入值

      return targetValue == viewVale;//是否等于passwordConfirm的值
    }

    ctrl.$formatters.push(function (value) {
      console.log("<a href="https://www.jb51.cc/tag/zhengzaijinxing/" target="_blank" class="keywords">正在进行</a>数据格式化的值:",value)
      return value;
    })

    ctrl.$parsers.push(function (value) {
      console.log("<a href="https://www.jb51.cc/tag/zhengzaijinxing/" target="_blank" class="keywords">正在进行</a>数据转换的值:",value)
      return value;
    })
  }
}

}
})

演示地址：