angularjs点击图片放大实现上传图片预览

/*图片点击放大再点击还原*/ angular.module('routerModule').directive('enlargePic',function(){//<span style="font-family: Arial, Helvetica, sans-serif;">enlargePic指令名称，写在需要用到的地方img中即可实现放大图片</span>  return{   restrict: "AE",   link: function(scope,elem){    elem.bind('click',function($event){     var img = $event.srcElement || $event.target;     angular.element(document.querySelector(".mask"))[0].style.display = "block";     angular.element(document.querySelector(".bigPic"))[0].src = img.src;    })   }  } }) .directive('closePic',function(){  return{   restrict: "AE",   link: function(scope,elem){    elem.bind('click',function($event){     angular.element(document.querySelector(".mask"))[0].style.display = "none";    })   }  } });