如果我的标题听起来如此混乱，我深表歉意，因为我不知道该如何准确地写出它。基本上，这就是我想要做的。
例如，我有以下数组：
var sourceArray = [
{ question: "Question 1", inputType: "radio", answer: "Answer 1", id: "1" },
{ question: "Question 1", inputType: "radio", answer: "Answer 2", id: "2" },
{ question: "Question 1", inputType: "radio", answer: "Answer 3", id: "3" },
{ question: "Question 2", inputType: "radio", answer: "Answer 1", id: "4" },
{ question: "Question 2", inputType: "radio", answer: "Answer 2", id: "5" },
{ question: "Question 2", inputType: "radio", answer: "Answer 3", id: "6" }
]
我想对其进行重组，使其看起来像这样：
var newArray = [
{
question: "Question 1", inputType: "radio",
choices: [{answer: "Answer 1", id: "1"},
{answer: "Answer 2", id: "2"},
{answer: "Answer 3", id: "3"}
]},
{
question: "Question 2", inputType: "radio",
choices: [{answer: "Answer 1", id: "4"},
{answer: "Answer 2", id: "5"},
{answer: "Answer 3", id: "6"}
]}
]
答案按问题分组，因此，如果中的下一个问题sourceArray与当前问题相同，它将把答案推入choices数组。
在AngularJS中使用angular.forEach是否可能？
任何帮助将不胜感激。
一如既往地感谢您的回复。
干得好。请参见下面的工作示例：
// Add a hepler method in the Array to find the value
Array.prototype.find = function(key, value) {
var index = -1;
angular.forEach(this, function(item, i) {
if (item[key] === value) {
index = i;
}
});
return this[index];
};
var app = angular.module("sa", []);
app.controller("FooController", function($scope) {
$scope.sourceArray = [{
question: "Question 1",
inputType: "radio",
answer: "Answer 1",
id: "1"
}, {
question: "Question 1",
inputType: "radio",
answer: "Answer 2",
id: "2"
}, {
question: "Question 1",
inputType: "radio",
answer: "Answer 3",
id: "3"
}, {
question: "Question 2",
inputType: "radio",
answer: "Answer 1",
id: "4"
}, {
question: "Question 2",
inputType: "radio",
answer: "Answer 2",
id: "5"
}, {
question: "Question 2",
inputType: "radio",
answer: "Answer 3",
id: "6"
}];
$scope.newArray = [];
$scope.convert = function() {
// Iterate array
angular.forEach($scope.sourceArray, function(item) {
// Check if the question alrady exists
if (!$scope.newArray.find('question', item.question)) {
// If not, push the question to the array with empty choices
$scope.newArray.push({
question: item.question,
inputType: item.inputType,
choices: []
});
}
var newArrayItem = $scope.newArray.find('question', item.question);
// Push the choices
newArrayItem.choices.push({
answer: item.answer,
id: item.id
});
});
};
});<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
<div ng-app="sa" ng-controller="FooController">
Before:
<br>{{sourceArray | json}}
<br>
<a href="" ng-click="convert()">convert</a>
<br>After:
<br>{{newArray | json}}
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