在vue component中的methods域里定义一个方法，这个方法中会调用某一个ajax call，在ajax中的this会指向ajax本身，而不再是vue实例本身。
methods: { typeAhead: function (searchType) { **var self = this;** //获取vue实例本身，捕获指针指向 var searchURL = ""; switch (searchType) { case "companyName" : searchURL = "/my-account/typeAheadCompanyName"; break; case "repId" : searchURL = "/my-account/typeAheadRepId"; break; case "repFirstName" : searchURL = "/my-account/typeAheadRepFirstName"; break; case "repLastName" : searchURL = "/my-account/typeAheadRepLastName"; break; } var ajaxData = {}; if(searchType == "companyName" || searchType == "repId") { ajaxData = {searchKeyWords:this.searchVal}; } else { ajaxData = {repFirstName: this.firstName,repLastName: this.lastName} } $.ajax({ type : "GET", url : searchURL, data : ajaxData, success : function(result) { **self.typeAheadResult.length=0;** //清空vue实例data中的数组 for(var i=0;i<result.length;i++){ **self.typeAheadResult.push(result[i]);** //填充vue实例data中的数组 } **self.showTypeAhead = true;** //修改vue实例中的值，控制typeahead显示结果 }, error : function(e){ **self.showTypeAhead = false;** } }); } }不要直接用this
