entityMap|0|type|LINK|mutability|MUTABLE|data|url|https://lodash.com/docs#map|1|https://github.com/lodash/lodash/blob/3.10.1/doc/README.md#_pluckcollection-path|blocks|key|bcep7|text|从v4.x版本开始，您应该使用_.map|unstyled|depth|inlineStyleRanges|offset|length|style|UNDERLINE|CODE|entityRanges|13ii9|_.map(users,+'id');+//+[12,+14,+16,+18]|code-block|syntax|javascript|ftm98|在这种情况下，它对应于本机|4gr5f|Array.prototype.map|ahfpa|方法，您将在其中编写(ES2015语法)：|cjvq5|users.map(user+=>+user.id);+//+[12,+14,+16,+18]|8bacu|在v4.x之前，您可以使用_.pluck|ds38q|同样的方式：|75rla|_.pluck(users,+'id');+//+[12,+14,+16,+18]^0|F|5|F|5|F|5|0|0|0|0|0|0|0|D|7|D|7|D|7|1|0|0^^$0|$1|$2|3|4|5|6|$7|8]]|9|$2|3|4|5|6|$7|A]]]|B|@$C|D|E|F|2|G|H|18|I|@$J|19|K|1A|L|M]|$J|1B|K|1C|L|N]]|O|@$J|1D|K|1E|C|1F]]|6|$]]|$C|P|E|Q|2|R|H|1G|I|@]|O|@]|6|$S|T]]|$C|U|E|V|2|G|H|1H|I|@]|O|@]|6|$]]|$C|W|E|X|2|G|H|1I|I|@]|O|@]|6|$]]|$C|Y|E|Z|2|G|H|1J|I|@]|O|@]|6|$]]|$C|10|E|11|2|R|H|1K|I|@]|O|@]|6|$S|T]]|$C|12|E|13|2|G|H|1L|I|@$J|1M|K|1N|L|M]|$J|1O|K|1P|L|N]]|O|@$J|1Q|K|1R|C|1S]]|6|$]]|$C|14|E|15|2|G|H|1T|I|@]|O|@]|6|$]]|$C|16|E|17|2|R|H|1U|I|@]|O|@]|6|$S|T]]]]

Since version v4.x you should use <a href="https://lodash.com/docs#map" rel="noreferrer"><code>_.map</code></a>:

<pre><code>_.map(users, 'id'); // [12, 14, 16, 18]
</code></pre>

this way it is corresponds to native <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map" rel="noreferrer">Array.prototype.map</a> method where you would write (ES2015 syntax):

<pre><code>users.map(user =&gt; user.id); // [12, 14, 16, 18]
</code></pre>

Before v4.x you could use <a href="https://github.com/lodash/lodash/blob/3.10.1/doc/README.md#_pluckcollection-path" rel="noreferrer"><code>_.pluck</code></a> the same way:

<pre><code>_.pluck(users, 'id'); // [12, 14, 16, 18]
</code></pre>

entityMap|blocks|key|9ocag|text|这将为您提供弹出窗口中所需的内容。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|d6ltt|for(var+i+=+0;+i+<+users.Count;+i%2B%2B){
+++alert(users[i].id);++
}|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

This will give you what you want in a pop-up. 

<pre><code>for(var i = 0; i &lt; users.Count; i++){
 alert(users[i].id); 
}
</code></pre>

entityMap|blocks|key|7ft9t|text|使用纯JS：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|deqjh|var+userIds+=+users.map(+function(obj)+{+return+obj.id;+}+);|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

With pure JS:

<pre><code>var userIds = users.map( function(obj) { return obj.id; } );
</code></pre>

entityMap|blocks|key|dclb2|text|在新的_.pluck|type|unstyled|depth|inlineStyleRanges|entityRanges|data|f3stn|lodash版本v4.0.0|61u83|已删除，取而代之的是_.map|3i2a2|然后，您可以使用以下命令：|ch916|_.map(users,+'id');+//+[12,+14,+16,+18]|code-block|syntax|javascript|6djld|您可以在|2ri0c|Github+Changelog^0|0|0|0|0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|R|9|@]|A|@]|B|$]]|$2|C|4|D|6|7|8|S|9|@]|A|@]|B|$]]|$2|E|4|F|6|7|8|T|9|@]|A|@]|B|$]]|$2|G|4|H|6|7|8|U|9|@]|A|@]|B|$]]|$2|I|4|J|6|K|8|V|9|@]|A|@]|B|$L|M]]|$2|N|4|O|6|7|8|W|9|@]|A|@]|B|$]]|$2|P|4|Q|6|7|8|X|9|@]|A|@]|B|$]]]]

In the new lodash release v4.0.0 <code>_.pluck</code> has removed in favor of <code>_.map</code>

Then you can use this:

<pre><code>_.map(users, 'id'); // [12, 14, 16, 18]
</code></pre>

You can see in <a href="https://github.com/lodash/lodash/wiki/Changelog">Github Changelog</a>

entityMap|blocks|key|f3qfl|text|如果你使用的是原生javascript，那么你可以使用下面的代码-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|bn3lq|let+ids+=+users.map(function(obj,+index)+{

++++return+obj.id;
})

console.log(ids);+//[12,+14,+16,+18]|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

If you are using native javascript then you can use this code -

<pre><code>let ids = users.map(function(obj, index) {

 return obj.id;
})

console.log(ids); //[12, 14, 16, 18]
</code></pre>

entityMap|blocks|key|6g9vk|text|如果你需要从每个对象中提取几个属性，那么|type|unstyled|depth|inlineStyleRanges|entityRanges|data|at5lq|let+newArr+=+_.map(arr,+o+=>+_.pick(o,+['name',+'surname',+'rate']));|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

And if you need to extract several properties from each object, then

<pre><code>let newArr = _.map(arr, o =&gt; _.pick(o, ['name', 'surname', 'rate']));
</code></pre>

entityMap|blocks|key|p4av|text|通过ES6获得它的简单甚至更快的方法|type|unstyled|depth|inlineStyleRanges|entityRanges|data|h0j1|let+newArray+=+users.flatMap(i+=>+i.ID)+//+->+[+12,+13,+14,+15+]|code-block|syntax|javascript^0|0^^$0|$]|1|@$2|3|4|5|6|7|8|H|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|I|9|@]|A|@]|B|$F|G]]]]

Simple and even faster way to get it via ES6

<pre><code>let newArray = users.flatMap(i =&gt; i.ID) // -&gt; [ 12, 13, 14, 15 ]
</code></pre>

entityMap|blocks|key|7n7s7|text|​|type|unstyled|depth|inlineStyleRanges|entityRanges|data|20coo|const+users+=+[{
++++++id:+12,
++++++name:+'Adam'
+++},{
++++++id:+14,
++++++name:+'Bob'
+++},{
++++++id:+16,
++++++name:+'Charlie'
+++},{
++++++id:+18,
++++++name:+'David'
+++}
]
const+userIds+=+_.values(users);
console.log(userIds);+//[12,+14,+16,+18]|code-block|syntax|javascript|b27uj^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|5|6|7|8|K|9|@]|A|@]|B|$]]]]

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>const users = [{
 id: 12,
 name: 'Adam'
 },{
 id: 14,
 name: 'Bob'
 },{
 id: 16,
 name: 'Charlie'
 },{
 id: 18,
 name: 'David'
 }
]
const userIds = _.values(users);
console.log(userIds); //[12, 14, 16, 18]</code></pre>
</div>
</div>

I'm sure it's somewhere inside the LoDash docs, but I can't seem to find the right combination.
<pre><code>var users = [{
 id: 12,
 name: 'Adam'
 },{
 id: 14,
 name: 'Bob'
 },{
 id: 16,
 name: 'Charlie'
 },{
 id: 18,
 name: 'David'
 }
]

// how do I get [12, 14, 16, 18]
var userIds = _.map(users, _.pick('id'));
</code></pre>

LoDash: Get an array of values from an array of object properties

 我确定它就在LoDash文档中的某个地方，但是我似乎找不到正确的组合。 var users = [{      id: 12,      name: 'Adam'   },{      id: 14,      name: 'Bob'   },{      id: 16,      name: 'Charlie'  ...

问LoDash:从对象属性数组中获取值数组
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