1

我不确定我的标题是否清楚，但让我们看一下。

我li在一个列表中有 2 个元素ul，我希望当我单击 ali时，获取 的文本，li然后基于phones变量创建一个对象。

示例：当我单击 NEXUS 时，在我的控制台中获取一个带有属性的 Phone 对象：

models: ['5', '6', '5X', '6P'];

不幸的是，我无法将构造函数名称传递给函数的返回setConstructor()。{}我试图用and编写“模型名称” ()，但代码根本没有执行。

我怎样才能做到这一点？

var phones = {
    NEXUS: {
        name: 'Nexus',
        models: ['5', '6', '5X', '6P']
    },
    IPHONE: {
        name: 'iPhone',
        models: ['5', '5S', '6', '6S']
    }
};

var lastConstructorClicked = {};
var output = {};

function Phone(constructorModels) {
    this.models = constructorModels;
    this.getModels = function () {
        return this.models;
    };
}

function setConstructor(modelname) {
	return phones.modelname.models;   
}

$("a[id^='show-models-']").click(function() {
    lastConstructorClicked = $(this).text();
    console.log(lastConstructorClicked);
	output = new Phone(setConstructor(lastConstructorClicked));
});

console.log(output);
<ul class="dropdown-menu">
    <li><a href="#" id="show-models-iphone">IPHONE</a></li>
    <li><a href="#" id="show-models-nexus">NEXUS</a></li>
</ul>

4

2 回答 2

1

phones.modelname.models将寻找一个实际命名 modelname的成员，而不是该变量命名的成员。你要：

phones[modelname].models


var phones = {
  NEXUS: {
    name: 'Nexus',
    models: ['5', '6', '5X', '6P']
  },
  IPHONE: {
    name: 'iPhone',
    models: ['5', '5S', '6', '6S']
  }
};

var lastConstructorClicked = "";
var output = {};

function Phone(constructorModels) {
  this.models = constructorModels;
  this.getModels = function() {
    return this.models;
  };
}

function setConstructor(modelname) {
  return phones[modelname].models;
}

$("a[id^='show-models-']").click(function(e) {
  e.preventDefault();

  lastConstructorClicked = $(this).text();
  console.log(lastConstructorClicked);
  output = new Phone(setConstructor(lastConstructorClicked));
  console.log(output);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

<ul class="dropdown-menu">
  <li><a href="#" id="show-models-iphone">IPHONE</a>
  </li>
  <li><a href="#" id="show-models-nexus">NEXUS</a>
  </li>
</ul>

于 2015-10-20T20:01:07.407 回答
0

使用括号表示法访问对象

window.onload = function(){


var phones = {
    NEXUS: {
        name: 'Nexus',
        models: ['5', '6', '5X', '6P']
    },
    IPHONE: {
        name: 'iPhone',
        models: ['5', '5S', '6', '6S']
    }
};

var lastConstructorClicked = {};
var output = {};



$("a[id^='show-models-']").click(function() {
    lastConstructorClicked = $(this).text();
    console.log(lastConstructorClicked);

  var   output = phones[lastConstructorClicked].models;

  console.log(output);
});



}

// 笨拙

http://plnkr.co/edit/SMovCH8s67YfLmMCWYEO?p=preview

于 2015-10-20T20:05:18.930 回答