如何在控制器中获取数组项的索引位置并在 angularjs 中传递一个值 [英] how to get index position of an array item in controller passing a value in angularjs

问题描述

我有一个包含值列表的数组.

I have an array with list of values.

 [Object { id="5", country="UAE"}, Object { id="4", country="India"}]

我想根据 id 中存在的值获取数组项的索引.如何在 angularJS 控制器中获取值 id = 4 的数组项的索引位置?

I want to get the index of array item based on the value present in the id. How can I get the index position of an array item with value of id = 4 in angularJS Controller?

推荐答案

angularjs 的方式(使用 $filter)是这样的

The angularjs way (using $filter) would be something like this

app.controller('MainCtrl', ['$scope', '$filter', function($scope, $filter) {

    //array
    var items = [{  id: "5", country: "UAE" }, { id: "4",  country: "India" }];

    //search value
    var id2Search = "4";

    //filter the array
    var foundItem = $filter('filter')(items, { id: id2Search  }, true)[0];

    //get the index
    var index = items.indexOf(foundItem );
}]);

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