blocks|key|359107|text|您需要一个if来检查另一个条件|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|359108|}+else+if+(movies[i].haswatched+!==+true)
//+++++%5E%5E|code-block|syntax|javascript|359109|或者省略该条件，因为您已经用一个真正的条件检查了条件，那么您只需要对else部件使用反向条件进行新的检查。|359110|}+else+{
++++//...
}|359111|​|359112|var+movies+=+[{+title:+"Shawshank",+rating:+5,+hasWatched:+true+},+{+title:+"Boardwalk+empire",+rating:+5,+hasWatched:+true+},+{+title:+"bladerunner",+rating:+"unkown",+hasWatched:+false+},+{+title:+"Ratatouille",+rating:+4,+hasWatched:+true+}],
++++i;

for+(i+=+0;+i+<+movies.length;+i%2B%2B)+{
++++if+(movies[i].hasWatched)+{
++++++++console.log("You+have+seen+"+%2B+movies[i].title+%2B+"+-+"+%2B+movies[i].rating);
++++}+else+{
++++++++console.log("You+have+not+seen+"+%2B+movies[i].title+%2B+"+-+"+%2B+movies[i].rating);
++++}
}|359113|359114|entityMap^0|5|2|0|0|Y|4|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Y|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|M|3|N|5|H|7|12|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|13|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|14|8|@]|D|@]|E|$I|J]]|$1|S|3|P|5|6|7|15|8|@]|D|@]|E|$]]|$1|T|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|U|$]]

You need either an <code>if</code> for checking another condition

<pre><code>} else if (movies[i].haswatched !== true)
// ^^
</code></pre>

or omit the condition, because you checked already the condition with a true condition, then you need just for the <code>else</code> part no new check with reverse condition.

<pre><code>} else {
 //...
}
</code></pre>

<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>var movies = [{ title: "Shawshank", rating: 5, hasWatched: true }, { title: "Boardwalk empire", rating: 5, hasWatched: true }, { title: "bladerunner", rating: "unkown", hasWatched: false }, { title: "Ratatouille", rating: 4, hasWatched: true }],
 i;

for (i = 0; i &lt; movies.length; i++) {
 if (movies[i].hasWatched) {
 console.log("You have seen " + movies[i].title + " - " + movies[i].rating);
 } else {
 console.log("You have not seen " + movies[i].title + " - " + movies[i].rating);
 }
}</code></pre>
</div>
</div>

blocks|key|707476|text|for(var+i+=+0;+i+<movies.length;+i%2B%2B)
{
++if(movies[i].hasWatched)
++{
+++++++console.log("You+have+seen+"+%2B+movies[i].title+%2B+"+-+"+%2B+++movies[i].rating);
++}
++else
++{
++++++++console.log("You+have+not+seen+"+%2B+movies[i].title+%2B+"+-+"+%2B+
+++++++++++++++++++++movies[i].rating);
++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|707477|只使用其他方法，而不是给出另一个条件。它将解决以下问题:)|unstyled|707478|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>for(var i = 0; i &lt;movies.length; i++)
{
 if(movies[i].hasWatched)
 {
 console.log("You have seen " + movies[i].title + " - " + movies[i].rating);
 }
 else
 {
 console.log("You have not seen " + movies[i].title + " - " + 
 movies[i].rating);
 }
}
</code></pre>

use only else instead of giving another condition. it will solve the problem :)

blocks|key|359129|text|else语句不使用条件表达式。else语句后面的表达式无条件地执行。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|359130|在本例中：|359131|其他(moviesi.haswatched+!==+true)+{console.log(“您没有看到”%2B+moviesi.title+%2B“-”%2B+moviesi.rating)；}|blockquote|359132|else语句将执行表达式(movies[i].haswatched+!==+true)，它没有任何效果。这就像一个声明foo+===+true;。它被解释，执行，它对程序没有任何影响。|359133|发布的代码相当于我添加的分号，以澄清语句的结尾：|359134|for(var+i+=+0;+i+<movies.length;+i%2B%2B)
{
++if(movies[i].hasWatched)
++{
++++++console.log("You+have+seen+"+%2B+movies[i].title+%2B+"+-+"+%2B+
++movies[i].rating);
++}
++else+(movies[i].hasWatched+!==+true);

++console.log("You+have+not+seen+"+%2B+movies[i].title+%2B+"+-+"+%2B+movies[i].rating);
}|code-block|syntax|javascript|359135|也就是说，总是执行最后一个console.log语句。|359136|你可能打算这样写：|359137|if+(movies[i].hasWatched)+{
++//+...
}+else+{
++//+...
}|359138|entityMap^0|0|4|F|4|0|0|0|0|4|C|V|1N|D|0|0|0|D|B|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|16|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|17|8|@]|D|@]|E|$]]|$1|K|3|L|5|6|7|18|8|@$9|19|A|1A|B|C]|$9|1B|A|1C|B|C]|$9|1D|A|1E|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1F|8|@]|D|@]|E|$]]|$1|O|3|P|5|Q|7|1G|8|@]|D|@]|E|$R|S]]|$1|T|3|U|5|6|7|1H|8|@$9|1I|A|1J|B|C]]|D|@]|E|$]]|$1|V|3|W|5|6|7|1K|8|@]|D|@]|E|$]]|$1|X|3|Y|5|Q|7|1L|8|@]|D|@]|E|$R|S]]|$1|Z|3|-4|5|6|7|1M|8|@]|D|@]|E|$]]]|10|$]]

The <code>else</code> statement doesn't use a conditional expression.
The expression followed by the <code>else</code> statement is executed unconditionally.

In this example:

<blockquote>
<pre><code>else (movies[i].haswatched !== true)
 {
 console.log("You have not seen " + movies[i].title + " - " + 
 movies[i].rating);
 }
}
</code></pre>
</blockquote>

The <code>else</code> statement will execute the expression <code>(movies[i].haswatched !== true)</code>, which has no effect whatsoever. It's like a statement <code>foo === true;</code>. It's interpreted, executed, and it has no effect whatsoever on the program.

The posted code is equivalent to this, the semicolons I added to clarify the end of statements:

<pre><code>for(var i = 0; i &lt;movies.length; i++)
{
 if(movies[i].hasWatched)
 {
 console.log("You have seen " + movies[i].title + " - " + 
 movies[i].rating);
 }
 else (movies[i].hasWatched !== true);

 console.log("You have not seen " + movies[i].title + " - " + movies[i].rating);
}
</code></pre>

That is, the last <code>console.log</code> statement is always executed.

You probably meant to write like this:

<pre><code>if (movies[i].hasWatched) {
 // ...
} else {
 // ...
}
</code></pre>

blocks|key|707559|text|你已经被JavaScript的倾向所欺骗了，不管你经历了什么.|type|unstyled|depth|inlineStyleRanges|entityRanges|data|707560|当您有一个if+..+else语句时，else关键字后面的语句将在if条件不正确时执行。在您的例子中，该语句只是括号内的比较，就像您所写的那样：|offset|length|style|CODE|707561|var+something+=+1;
(something+===+1);|code-block|syntax|javascript|707562|完全合法，不太有用。|707563|在此之后，您将有另一段有效的代码，一个简单的块，如下所示：|707564|var+something+=+1;
{
+++alert(something);
}|707565|再一次，完全合法，但在它上，没有用。|707566|那么，这是如何导致您看到的输出呢？|707567|好的，if+..+else之后的代码块是针对每个条目执行的。你总是看到“你没见过.”。if部件还使用hasWatched+===+true打印这些项。|BOLD|707568|哦，那布莱德伦那一排呢？这只是那个对象的rating值.|707569|entityMap^0|0|5|A|J|4|X|2|0|0|0|0|0|0|0|3|A|17|2|1E|J|S|1B|0|0|S|K|6|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|14|8|@$D|15|E|16|F|G]|$D|17|E|18|F|G]|$D|19|E|1A|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|1B|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1C|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1D|8|@]|9|@]|A|$]]|$1|Q|3|R|5|J|7|1E|8|@]|9|@]|A|$K|L]]|$1|S|3|T|5|6|7|1F|8|@]|9|@]|A|$]]|$1|U|3|V|5|6|7|1G|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|1H|8|@$D|1I|E|1J|F|G]|$D|1K|E|1L|F|G]|$D|1M|E|1N|F|G]|$D|1O|E|1P|F|Y]]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1Q|8|@$D|1R|E|1S|F|Y]|$D|1T|E|1U|F|G]]|9|@]|A|$]]|$1|11|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]]|12|$]]

You've been tricked by JavaScript tendency to play along with whatever you through at it...

When you have an <code>if .. else</code> statement, the statement following the <code>else</code> keyword is executed when the <code>if</code> condition is falsy. In your case, that statement is simply a comparison within parentheses, just as you would write:

<pre><code>var something = 1;
(something === 1);
</code></pre>

Perfectly legal, not very useful.

After that, you have another valid piece of code, a simple block, like this:

<pre><code>var something = 1;
{
 alert(something);
}
</code></pre>

Again, perfectly legal, but in its on, not useful.

<hr>

So how does this cause the output you saw?

Well, the code block after the <code>if .. else</code> is executed for every item. You always see "You have not seen...". The <code>if</code> part also prints those items with <code>hasWatched === true</code>.

Ohh, and that Bladerunner row? that's just the value of <code>rating</code> for that object...

blocks|key|357406|text|当您给else一个条件时，它认为这是当if不为真时应该执行的代码。因此，下面的代码被看作是每次运行的另一个块。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|357407|试着运行以下命令：|357408|​|357409|if+(false)+{
++console.log("hello")
}+else(console.log("whoops"))+//+this+turns+into+the+else+block+to+be+run+when+if+is+false.
{
++console.log("goodbye")+//+this+runs+every+time.
}|code-block|syntax|javascript|357410|357411|这是因为您可以(但可能不应该)这样编写if/else：|357412|if+(false)
++++console.log("if")
else+console.log("else")+|357413|添加括号并不会更改else块。这是完全相同的：|357414|if+(false)
++++console.log("if")
else+(console.log("else"))|357415|entityMap^0|3|4|J|2|0|0|0|0|0|J|7|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|14|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|15|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|16|8|@]|D|@]|E|$M|N]]|$1|O|3|I|5|6|7|17|8|@]|D|@]|E|$]]|$1|P|3|Q|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|R|3|S|5|L|7|1B|8|@]|D|@]|E|$M|N]]|$1|T|3|U|5|6|7|1C|8|@]|D|@]|E|$]]|$1|V|3|W|5|L|7|1D|8|@]|D|@]|E|$M|N]]|$1|X|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|Y|$]]

When you give <code>else</code> a condition it thinks it's the code that should be executed when the <code>if</code> isn't true. And as a result the code below is seen as just another block to be run every time. 

Try running this:

<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>if (false) {
 console.log("hello")
} else(console.log("whoops")) // this turns into the else block to be run when if is false.
{
 console.log("goodbye") // this runs every time.
}</code></pre>
</div>
</div>


This is a result of the fact that you can (but probably shouldn't) write <code>if/else</code> like this:

<pre><code>if (false)
 console.log("if")
else console.log("else") 
</code></pre>

Adding parenthesis doesn't change the else block. This is identical:

<pre><code>if (false)
 console.log("if")
else (console.log("else"))
</code></pre>

blocks|key|707624|text|简短的回答是(正如其他几个答案所提到的)：else语句不接受/计算谓词。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|707625|解释：|707626|如果-否则是一个表达式，用于在程序流中创建两个分支，并允许由计算if语句的https://en.wikipedia.org/wiki/First-order_logic的结果来选择流。|707627|在将谓词求值为https://en.wikipedia.org/wiki/Boolean_data_type条件之后，根据结果是true还是false，将分别执行表达式的if块或*false块。|707628|没有if-if的简单程序|707629|假设流程程序执行两个语句：(begin)和(end)|707630|//+(beging)
//+(end)|code-block|syntax|javascript|707631|该程序的流程如下所示：|707632|+++(begin)
++++++%7C
++++++%7C
++++(end)|707633|使用if-else的简单程序|707634|我们在前面程序的中间注入一个if-else表达式，如下所示：|707635|//+(begin)
if(+predicate+)+{
++++//+(A)+if-block
}
else+{
++++//+(B)+else-block+(or+alternative-block)
}
//+(end)|707636|它是等效的*，与：|BOLD|707637|//+(begin)
if(+predicate+)+{
++++//+(A)+if-block
}
else+if+(+!predicate+){
++++//+(B)+else-block+(or+alternative-block)
}
//+(end)|707638|现在，流更改为：|707639|+++(begin)
++++++%7C
++++++%7C
+++++/+\
++++/+++\
++(A)+++(B)
++++\+++/
+++++\+/
++++++%7C
++++++%7C
++++(end)|707640|带有if的简单程序-如果|707641|我们可以链接if-else表达式并创建if+else-if+else表达式。要做到这一点，我们需要一个if语句，后面跟着任意数量的else+if+(或在某些语言中是elif)语句，最后是一个else语句：|707642|//+(begin)
if(+predicate_1+)+{
++++//+(A)+if-block
}
else+if+(+predicate_2+){
++++//+(B)+else-if-block+(or+alternative-block)
}
//+more+else-if+statements+can+be+added+here
else+{
++++//+(C)+else-block+(or+otherwise-block)
}
//+(end)|707643|因此，如果我们查看流程，添加else-if语句，就会增加我们从(开始)到(结束)的方式。|707644|+++(begin)
++++++%7C
++++++%7C
+++++/%7C\
++++/+%7C+\
+++/++%7C++\
++/+++%7C+++\
(A)++(B)++(C)
++\+++%7C+++/
+++\++%7C++/
++++\+%7C+/
+++++\%7C/
++++++%7C
++++++%7C
++++(end)|707645|*注意:在某些语言(如Haskell+)中，您需要有完整的条件表达式(即，如果需要else语句，以缩小条件表达式中的空白)。因此，例如，在Haskell中，以下内容将不会编译：|707646|if+predicate_1
then++--+if+block
else+if+predicate_2
then+--+else-if+block|707647|这是因为在最后需要有一个else语句来缩小差距，因此以下代码修复了错误：|707648|if+predicate_1
then++--+if+block
else+if+predicate_2
then+--+else-if+block
else+--+else+block|707649|entityMap|0|LINK|mutability|MUTABLE|url|https://en.wikipedia.org/wiki/Conditional_(computer_programming)#If.E2.80.93then.E2.80.93else_expressions|1|https://en.wikipedia.org/wiki/First-order_logic|2|https://en.wikipedia.org/wiki/Boolean_data_type|3|https://www.haskell.org/^0|L|4|0|0|W|2|0|5|0|11|1B|1|0|1S|4|1Y|5|2I|5|7|1B|2|0|0|0|0|0|0|0|E|7|0|0|2|4|0|0|0|0|0|6|7|J|F|1F|2|1T|7|2A|4|2N|4|0|0|E|7|0|0|15|4|B|7|3|0|0|C|4|0|0^^$0|@$1|2|3|4|5|6|7|29|8|@$9|2A|A|2B|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|2C|8|@]|D|@]|E|$]]|$1|H|3|I|5|6|7|2D|8|@$9|2E|A|2F|B|C]]|D|@$9|2G|A|2H|1|2I]|$9|2J|A|2K|1|2L]]|E|$]]|$1|J|3|K|5|6|7|2M|8|@$9|2N|A|2O|B|C]|$9|2P|A|2Q|B|C]|$9|2R|A|2S|B|C]]|D|@$9|2T|A|2U|1|2V]]|E|$]]|$1|L|3|M|5|6|7|2W|8|@]|D|@]|E|$]]|$1|N|3|O|5|6|7|2X|8|@]|D|@]|E|$]]|$1|P|3|Q|5|R|7|2Y|8|@]|D|@]|E|$S|T]]|$1|U|3|V|5|6|7|2Z|8|@]|D|@]|E|$]]|$1|W|3|X|5|R|7|30|8|@]|D|@]|E|$S|T]]|$1|Y|3|Z|5|6|7|31|8|@]|D|@]|E|$]]|$1|10|3|11|5|6|7|32|8|@$9|33|A|34|B|C]]|D|@]|E|$]]|$1|12|3|13|5|R|7|35|8|@]|D|@]|E|$S|T]]|$1|14|3|15|5|6|7|36|8|@$9|37|A|38|B|16]]|D|@]|E|$]]|$1|17|3|18|5|R|7|39|8|@]|D|@]|E|$S|T]]|$1|19|3|1A|5|6|7|3A|8|@]|D|@]|E|$]]|$1|1B|3|1C|5|R|7|3B|8|@]|D|@]|E|$S|T]]|$1|1D|3|1E|5|6|7|3C|8|@]|D|@]|E|$]]|$1|1F|3|1G|5|6|7|3D|8|@$9|3E|A|3F|B|C]|$9|3G|A|3H|B|C]|$9|3I|A|3J|B|C]|$9|3K|A|3L|B|C]|$9|3M|A|3N|B|C]|$9|3O|A|3P|B|C]]|D|@]|E|$]]|$1|1H|3|1I|5|R|7|3Q|8|@]|D|@]|E|$S|T]]|$1|1J|3|1K|5|6|7|3R|8|@$9|3S|A|3T|B|C]]|D|@]|E|$]]|$1|1L|3|1M|5|R|7|3U|8|@]|D|@]|E|$S|T]]|$1|1N|3|1O|5|6|7|3V|8|@$9|3W|A|3X|B|C]]|D|@$9|3Y|A|3Z|1|40]]|E|$]]|$1|1P|3|1Q|5|R|7|41|8|@]|D|@]|E|$S|T]]|$1|1R|3|1S|5|6|7|42|8|@$9|43|A|44|B|C]]|D|@]|E|$]]|$1|1T|3|1U|5|R|7|45|8|@]|D|@]|E|$S|T]]|$1|1V|3|-4|5|6|7|46|8|@]|D|@]|E|$]]]|1W|$1X|$5|1Y|1Z|20|E|$21|22]]|23|$5|1Y|1Z|20|E|$21|24]]|25|$5|1Y|1Z|20|E|$21|26]]|27|$5|1Y|1Z|20|E|$21|28]]]]

The short answer is (as mentioned by several other answers): <code>else</code> statement does not accept/evaluate a predicate.

<h1>Explanation:</h1>

<a href="https://en.wikipedia.org/wiki/Conditional_(computer_programming)#If.E2.80.93then.E2.80.93else_expressions" rel="nofollow noreferrer">if-else</a> is an expression for creating two branches in the program flow, and letting the flow to be chosen by the result of evaluating the <a href="https://en.wikipedia.org/wiki/First-order_logic" rel="nofollow noreferrer">predicate</a> of the <code>if</code> statement.

After the predicate is evaluated to a <a href="https://en.wikipedia.org/wiki/Boolean_data_type" rel="nofollow noreferrer">Boolean</a> Condition, then depending on whether the result is a <code>true</code> or <code>false</code>, the if-block or * else-block* of the expression will be executed, respectively.

<h2>Simple Program Without if-else</h2>

Let's say the flowing program executes two statements: (begin) and (end)

<pre><code>// (beging)
// (end)
</code></pre>

The flow of this program would look like:

<pre><code> (begin)
 |
 |
 (end)
</code></pre>

<h2>Simple Program with if-else</h2>

We inject an <code>if-else</code> expression in the middle of the previous program as follow:

<pre><code>// (begin)
if( predicate ) {
 // (A) if-block
}
else {
 // (B) else-block (or alternative-block)
}
// (end)
</code></pre>

Which is equivalent* to: 

<pre><code>// (begin)
if( predicate ) {
 // (A) if-block
}
else if ( !predicate ){
 // (B) else-block (or alternative-block)
}
// (end)
</code></pre>

And the flow now is changed to:

<pre><code> (begin)
 |
 |
 / \
 / \
 (A) (B)
 \ /
 \ /
 |
 |
 (end)
</code></pre>

<h2>Simple Program with if else-if</h2>

We can chain <code>if-else</code> expressions and create <code>if else-if else</code> expressions. To do so we need to have an <code>if</code> statement, followed by any number of <code>else if</code> (or in some languages <code>elif</code>) statements, and finally, followed by an <code>else</code> statement:

<pre><code>// (begin)
if( predicate_1 ) {
 // (A) if-block
}
else if ( predicate_2 ){
 // (B) else-if-block (or alternative-block)
}
// more else-if statements can be added here
else {
 // (C) else-block (or otherwise-block)
}
// (end)
</code></pre>

So if we look at the flow, adding <code>else-if</code> statements, increases the ways we can get from (begin) to (end)

<pre><code> (begin)
 |
 |
 /|\
 / | \
 / | \
 / | \
(A) (B) (C)
 \ | /
 \ | /
 \ | /
 \|/
 |
 |
 (end)
</code></pre>

*NOTE: In some languages like <a href="https://www.haskell.org/" rel="nofollow noreferrer">Haskell</a> you are required to have complete conditional expressions (i.e. an <code>else</code> statement if required to close the gap in the conditional expression). So for example, in Haskell, the following will not compile:

<pre><code>if predicate_1
then -- if block
else if predicate_2
then -- else-if block
</code></pre>

that is because at the end there needs to be an <code>else</code> statement to close the gap, so the following fixes the error:

<pre><code>if predicate_1
then -- if block
else if predicate_2
then -- else-if block
else -- else block
</code></pre>

<pre><code>var movies =
[ 
 {
 title: "Shawshank",
 rating: 5,
 hasWatched: true
 },
 {
 title: "Boardwalk empire",
 rating: 5,
 hasWatched: true
 },
 {
 title: "bladerunner",
 rating: "unkown",
 hasWatched: false
 },
 {
 title: "Ratatouille",
 rating: 4,
 hasWatched: true
 }
]

for(var i = 0; i &lt;movies.length; i++)
{
if(movies[i].hasWatched)
 {
 console.log("You have seen " + movies[i].title + " - " + 
 movies[i].rating);
 }
else (movies[i].hasWatched !== true)
 {
 console.log("You have not seen " + movies[i].title + " - " + 
 movies[i].rating);
 }
}
</code></pre>

When i change the else-if to else it produces this output:

<ul>
<li>You have seen Shawshank - 5</li>
<li>You have not seen Shawshank - 5</li>
<li>You have seen Boardwalk empire - 5</li>
<li>You have not seen Boardwalk empire - 5</li>
<li>You have not seen bladerunner - unkown</li>
<li>You have seen Ratatouille - 4</li>
<li>You have not seen Ratatouille - 4</li>
</ul>

Why does the code seem to fall through in this case?

I am particularly interested in why bladerunner is only output one. The only apparent difference is that the rating property is "string" and not "number".

Best

JS else/else if

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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var movies =[   {    title: "Shawshank",    rating: 5,    hasWatched: true  },  {    title: "Boardwalk empire",    rating: 5,    hasWatched: true  },  {    titl...

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