AngularJS-ng使用字符串索引在数组上重复

AngularJS - ng-repeat over array with string index

本文关键字：数组 索引 字符串 AngularJS-ng      更新时间：2023-09-26

如何在具有字符串索引的数组上ng-repeat？请参阅下面的代码片段-

以下代码位于控制器中。

$scope.days = ["mon", "tue", "wed" .... "sun"];
$scope.arr = [];
$scope.arr["mon"] = ["apple","orange"];
$scope.arr["tue"] = ["blue","swish"];
.
.
.
$scope.arr["sun"] = ["pineapple","myfruit","carrot"];

问题-如何像下面这样ng-repeat，有可能吗？

<div ng-repeat="day in days">{{day}}
    <span ng-repeat="item in arr(day)">{{item}}</span> 
    <-- Something like "arr(day)", can it be done in angular -->
</div>

您可以对数组中的项使用普通语法。请参考我的小提琴

<div ng-app='app' ng-controller='default' ng-init='init()'>
  <div ng-repeat='day in days'>
    <strong>{{day}}</strong><br/>
    <span ng-repeat="item in arr[day]">{{item}} </span> 
  </div>
</div>

https://jsfiddle.net/DoTH/evcv4tu5/3/

使用方括号访问对象/数组字段/元素。

<div ng-repeat="day in days">{{day}}
    <span ng-repeat="item in arr[day]">{{item}}</span>
</div>

您可以像这样使用ng-repeat="item in arr[day]"

您也可以打印项目编号。

<div ng-repeat="day in days">
    {{day}}
    <div ng-repeat="(key, value) in arr[day]">Item #{{key + 1}}: {{value}}
    </div>
    <br />
</div>

是的，这是绝对可能的。参见下面的工作示例：

var app = angular.module("sa", []);
app.controller("FooController", function($scope) {
  $scope.days = ["mon", "tue", "wed", "sun"];
  $scope.arr = [];
  $scope.arr["mon"] = ["apple", "orange"];
  $scope.arr["tue"] = ["blue", "swish"];
  $scope.arr["sun"] = ["pineapple", "myfruit", "carrot"];
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="sa" ng-controller="FooController">
  <ol>
    <li ng-repeat="day in days">
      <strong>{{day}}</strong>
      <ol>
        <li ng-repeat="item in arr[day]">{{item}}</li>
      </ol>
    </li>
  </ol>
</div>

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