Angularjs-service返回值

Question

我有服务

angular.module('myapp')
.service('AnswerService', function() {
    var answers = [];
    this.addAnswers = function(questionId) { 
        answers.push(questionId);
        console.log(answers);
    }
    return this;
})

并且必须在控制器中检索答案的值并以html格式显示。

我应该使用return this还是return answers？

Answer 1

添加另一个getter函数，例如

angular.module('myapp')
.service('AnswerService', function() {
    var answers = [];
    this.addAnswers = function(questionId) { 
        answers.push(questionId);
        console.log(answers);
    }
    this.getAnswers = function() {
        return answers;
    }
});

Answer 2

如果要访问外部数组，则应将其设置为服务。

添加行

  

this.answers = answers;

angular.module('myapp')
.service('AnswerService', function() {

    var answers = [];
    this.addAnswers = function(questionId) { 
        answers.push(questionId);
        console.log(answers);
    }
    this.answers = answers;
    return this;
})

Answer 3

this.answers = answers;

我会返回this

Answer 4

您应该将代码更改为此。

angular.module('myapp').service('AnswerService', function() {
var answers = [];
this.addAnswers = function(questionId) { 
    answers.push(questionId);
    console.log(answers);
    return answers;
} })