blocks|key|498276|text|不是的。“‘prototype”用于在Javascript中实现继承。例如：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|498277|/**+obsolete+syntax+**/

var+Person+=+Class.create();
Person.prototype+=+{
++initialize:+function(name)+{
++++this.name+=+name;
++},
++say:+function(message)+{
++++return+this.name+%2B+':+'+%2B+message;
++}
};

var+guy+=+new+Person('Miro');
guy.say('hi');
//+->+"Miro:+hi"

var+Pirate+=+Class.create();
//+inherit+from+Person+class:
Pirate.prototype+=+Object.extend(new+Person(),+{
++//+redefine+the+speak+method
++say:+function(message)+{
++++return+this.name+%2B+':+'+%2B+message+%2B+',+yarr!';
++}
});

var+john+=+new+Pirate('Long+John');
john.say('ahoy+matey');
//+->+"Long+John:+ahoy+matey,+yarr!"|code-block|syntax|javascript|498278|代码源和其他信息可以在这里找到：http://www.prototypejs.org/learn/class-inheritance|offset|length|498279|entityMap|0|LINK|mutability|MUTABLE|url|http://www.prototypejs.org/learn/class-inheritance^0|0|0|G|1E|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

No. 'prototype' used for implementing inheritance in Javascript. Such as that:

<pre><code>/** obsolete syntax **/

var Person = Class.create();
Person.prototype = {
 initialize: function(name) {
 this.name = name;
 },
 say: function(message) {
 return this.name + ': ' + message;
 }
};

var guy = new Person('Miro');
guy.say('hi');
// -&gt; "Miro: hi"

var Pirate = Class.create();
// inherit from Person class:
Pirate.prototype = Object.extend(new Person(), {
 // redefine the speak method
 say: function(message) {
 return this.name + ': ' + message + ', yarr!';
 }
});

var john = new Pirate('Long John');
john.say('ahoy matey');
// -&gt; "Long John: ahoy matey, yarr!"
</code></pre>

code source and additional info you can find here: <a href="http://www.prototypejs.org/learn/class-inheritance" rel="nofollow noreferrer">http://www.prototypejs.org/learn/class-inheritance</a>

blocks|key|1815228|text|在功能上，这是相同的。但是，后者强调Agent对象之间的相似性。你可以一眼就看出这些成员有这个值，而在一个更复杂的构造函数中，有很多条件，这就更难了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1815229|它还允许javascript运行时选择如何处理Agent成员初始化。(执行一些预编译，...)|1815230|entityMap^0|I|5|0|N|5|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|P|8|@]|D|@]|E|$]]]|I|$]]

Functionally, this is the same. The latter, however, emphasizes similarities between <code>Agent</code> objects. You can see in a glimpse that these members have that value, while in a more complicated constructor function, with lots of conditionals, it's harder.

It also allows the javascript runtime to choose how it handles <code>Agent</code> member initializations. (do some precompilation, ...)

blocks|key|1817412|text|假设此函数将用作构造函数，第一个函数在新实例上设置属性，第二个函数在原型上设置属性。如果它们独立于实例，则这两个片段是等价的，但如果它们不是(顾名思义)，那么它们就不是。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1817413|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Assuming that this function is to be used as a constructor, the first with set properties on the new instance and the second on the prototype. If they are independent of the instance the two snippets are equivalent, but if they aren't (as their name suggest), then they are not.

blocks|key|1815262|text|至少在将非基本体对象指定给this.somevar或prototype.somevar时是有区别的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1815263|尝试运行以下命令：|1815264|function+Agent(bIsSecret)
{
++++if(bIsSecret)
++++++++this.isSecret=true;

++++this.isActive+=+true;
++++this.isMale+=+false;
++++this.myArray+=+new+Array(1,2,3);
}

function+Agent2(bIsSecret)
{
++++if(bIsSecret)
++++++++this.isSecret+=+true;
}

Agent2.prototype.isActive+=+true;++++
Agent2.prototype.isMale+=+true;
Agent2.prototype.myArray+=+new+Array(1,2,3);

var+agent_a+=+new+Agent();
var+agent_b+=+new+Agent();

var+agent2_a+=+new+Agent2();
var+agent2_b+=+new+Agent2();

if+(agent_a.myArray+==+agent_b.myArray)+
++++alert('agent_a.myArray+==+agent_b.myArray');
else
++++alert('agent_a.myArray+!=+agent_b.myArray');

if+(agent2_a.myArray+==+agent2_b.myArray)+
++++alert('agent2_a.myArray+==+agent2_b.myArray');
else
++++alert('agent2_a.myArray+!=+agent2_b.myArray');|code-block|syntax|javascript|1815265|entityMap^0|D|C|Q|H|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|T|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|U|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|N|$]]

There is a difference at least if you are assigning a non-primitive object to <code>this.somevar</code> or <code>prototype.somevar</code>.

Try running this:

<pre><code>function Agent(bIsSecret)
{
 if(bIsSecret)
 this.isSecret=true;

 this.isActive = true;
 this.isMale = false;
 this.myArray = new Array(1,2,3);
}

function Agent2(bIsSecret)
{
 if(bIsSecret)
 this.isSecret = true;
}

Agent2.prototype.isActive = true; 
Agent2.prototype.isMale = true;
Agent2.prototype.myArray = new Array(1,2,3);

var agent_a = new Agent();
var agent_b = new Agent();

var agent2_a = new Agent2();
var agent2_b = new Agent2();

if (agent_a.myArray == agent_b.myArray) 
 alert('agent_a.myArray == agent_b.myArray');
else
 alert('agent_a.myArray != agent_b.myArray');

if (agent2_a.myArray == agent2_b.myArray) 
 alert('agent2_a.myArray == agent2_b.myArray');
else
 alert('agent2_a.myArray != agent2_b.myArray');
</code></pre>

Is there a difference between the two codes below, I presume not.

<pre><code>function Agent(bIsSecret)
{
 if(bIsSecret)
 this.isSecret=true;

 this.isActive = true;
 this.isMale = false;
}
</code></pre>

and

<pre><code>function Agent(bIsSecret)
{
 if(bIsSecret)
 this.isSecret=true;
}

Agent.prototype.isActive = true; 
Agent.prototype.isMale = true;
</code></pre>

Is there a difference between using "this" and "prototype" in Javascript here?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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下面的两个代码之间有区别吗，我想没有。function Agent(bIsSecret){    if(bIsSecret)        this.isSecret=true;    this.isActive = true;    this.isMale = false;}和function Agent(bIsSe...

问在Javascript中使用"this“和"prototype”有区别吗？
EN

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问在Javascript中使用"this“和"prototype”有区别吗？EN