采用ng-repeat循环发生错误时,如下面的输出对象: Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys. Repeater: c in shopCount, Duplicate key: undefined:undefined 应该在循环是加下面代码    ng-repeat item in items track by $index 版权声明:本文博主原创文章…

angularjs 使用ng-repeat报错 <div ng-init="words = ['高校','高校','高校']" ng-repeat="word in words"> {{word}} </div> [ngRepeat:dupes] Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys 发现是因为相同的…

angularjs 使用ng-repeat报错 <div ng-init="words = ['高校','高校','高校']" ng-repeat="word in words"> {{word}} </div> [ngRepeat:dupes] Duplicates in a repeater are not allowed. Use 'track by' expression to specify unique keys 发现是由于同样的…

错误原因在于出现相同内容. 原写为: <li ng-repeat="log in logs" scroll-down> {{log}}</li> 改写为: <li ng-repeat="log in logs track by $index" scroll-down> {{log}}</li> 加track by $index即可解决.…

在angular的项目里,一不小心就会出现这个错误[ngRepeat:dupes] ,这个问题是因为内容有重复引起的解决起来挺简单 在对应的ng-repeat指令中增加track by $index,意思是用索引值识别 例: <p ng-repeat="item in ages track by $index"> {{item}} </p> 这样,报错就消失啦…

String.prototype.repeat=function(num){ return (new Array(num+1)).join(this) } console.log('good'.repeat(3))…

ng-repeat is similar to foreach loop in C#. Let us understand this with an example. Here is what we want to do. 1. For each employee we have in the employees array we want a table row. With in each cell of the table row we to display employee Firstna…

// test14.cpp : 定义控制台应用程序的入口点. // #include "stdafx.h" #include<iostream> #include<string> #include<cctype> #include <vector> #include<exception> #include <initializer_list> using namespace std; class Solution…

HTML+CSS部分1.行内元素和块级元素?img算什么?行内元素怎么转化为块级元素?行内元素:和有他元素都在一行上,高度.行高及外边距和内边距都不可改变,文字图片的宽度不可改变,只能容纳文本或者其他行内元素:其中img是行元素块级元素:总是在新行上开始,高度.行高及外边距和内边距都可控制,可以容纳内敛元素和其他元素:行元素转换为块级元素方式:display:block:2.将多个元素设置为同一行?清除浮动有几种方式?将多个元素设置为同一行:float,inline-block清除浮动的方式:方…

angularjs的一些使用经验总结,此篇文章单谈ng指令之一ngrepeat 1. ngrepeat 时报错 Duplicates in a repeater are not allowed, 正常的时候,我们表达式内的数据是类似这样的(这时不会有任何问题) <span ng-repeat="answer in ['good answer','perfect answer', 'bad answer','not bad answer'] ">{{answer}} <…