blocks|key|577033|text|文本区域的值也是使用val方法获取的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|577034|var+message+=+$('textarea#message').val();|code-block|syntax|javascript|577035|entityMap^0|A|3|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Value of textarea is also taken with <code>val</code> method:

<pre><code>var message = $('textarea#message').val();
</code></pre>

blocks|key|577053|text|您需要对文本区域使用.val()，因为它是一个元素，而不是一个包装器。试一试|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|577054|$('textarea#message').val()|code-block|syntax|javascript|577055|Updated+fiddle|577056|entityMap|0|LINK|mutability|MUTABLE|url|http://jsfiddle.net/skram/SvbZJ/2/^0|A|6|0|0|0|E|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|M|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

You need to use <code>.val()</code> for textarea as it is an element and not a wrapper. Try 

<pre><code>$('textarea#message').val()
</code></pre>

<a href="http://jsfiddle.net/skram/SvbZJ/2/">Updated fiddle</a>

blocks|key|577066|text|您应该使用val()而不是html()|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|577067|var+message+=+$('#message').val();|code-block|syntax|javascript|577068|entityMap^0|5|5|D|6|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

you should use <code>val()</code> instead of <code>html()</code>

<pre><code>var message = $('#message').val();
</code></pre>

blocks|key|577262|text|在javascript中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|577263|document.getElementById("message").value|code-block|syntax|javascript|577264|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

in javascript : 

<pre><code>document.getElementById("message").value
</code></pre>

blocks|key|361453|text|您不需要使用textarea#message|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|361454|var+message+=+$('textarea#message').val();|code-block|syntax|javascript|361455|您可以直接使用|361456|var+message+=+$('#message').val();|361457|entityMap^0|6|G|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|P|$]]

You don't need to use <code>textarea#message</code>

<pre><code>var message = $('textarea#message').val();
</code></pre>

You can directly use

<pre><code>var message = $('#message').val();
</code></pre>

blocks|key|577102|text|在使用val()之前，你应该检查textarea是否为空，否则，你会得到未定义的错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|577103|if+($('textarea#message')+!=+undefined)+{
+++var+message+=+$('textarea#message').val();
}|code-block|syntax|javascript|577104|然后，您可以对message执行任何操作。|577105|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You should check the textarea is null before you use val() otherwise, you will get undefined error.

<pre><code>if ($('textarea#message') != undefined) {
 var message = $('textarea#message').val();
}
</code></pre>

Then, you could do whatever with message.

blocks|key|361387|text|$('textarea#message')不能是未定义的(当然，如果您所说的$指的是jQuery+)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|361388|$('textarea#message')的长度可能为0，然后$('textarea#message').val()将为空，仅此而已|361389|entityMap^0|0|L|12|1|0|0|L|V|R|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|I|$]]

<code>$('textarea#message')</code> cannot be undefined (if by <code>$</code> you mean jQuery of course).

<code>$('textarea#message')</code> may be of length 0 and then <code>$('textarea#message').val()</code> would be empty that's all

blocks|key|577190|text|所有值都将始终与.val()一起使用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|577191|参见下面的代码：|577192|var+message+=+$('#message').val();|code-block|syntax|javascript|577193|entityMap^0|8|6|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

all Values is always taken with <code>.val()</code>.

see the code bellow:

<pre><code>var message = $('#message').val();
</code></pre>

blocks|key|577331|text|您可以直接使用|type|unstyled|depth|inlineStyleRanges|entityRanges|data|577332|var+message+=+$.trim($("#message").val());|code-block|syntax|javascript|577333|阅读更多@+Get+the+Value+of+TextArea+using+the+jQuery+Val+()+Method|offset|length|577334|entityMap|0|LINK|mutability|MUTABLE|url|http://www.jquerypot.com/how-to-get-the-value-of-a-textarea-using-jquery/^0|0|0|6|1K|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]]]]

You can directly use

<pre><code>var message = $.trim($("#message").val());
</code></pre>

Read more @ <a href="http://www.jquerypot.com/how-to-get-the-value-of-a-textarea-using-jquery/" rel="nofollow noreferrer">Get the Value of TextArea using the jQuery Val () Method</a>

blocks|key|361554|text|您还可以按名称而不是id获取值，如下所示：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|361555|var+message+=+$('textarea:input[name=message]').val();|code-block|syntax|javascript|361556|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can also get value by name instead of id like this:

<pre><code>var message = $('textarea:input[name=message]').val();
</code></pre>

i have this form and im trying to get the value from the text area. for some reason it doesn't want to.

<pre><code>&lt;form action="/profile/index/sendmessage" method="post" enctype="application/x-www-form-urlencoded"&gt;
 &lt;div class="upload_form"&gt;
 &lt;dt id="message-label"&gt;&lt;label class="optional" for="message"&gt;Enter Message&lt;/label&gt;&lt;/dt&gt;
 &lt;dd id="message-element"&gt;
 &lt;textarea cols="60" rows="5" id="message" name="message"&gt;&lt;/textarea&gt;&lt;/dd&gt;
 &lt;dt id="id-label"&gt;&amp;nbsp;&lt;/dt&gt;
 &lt;dd id="id-element"&gt;
 &lt;input type="hidden" id="id" value="145198" name="id"&gt;&lt;/dd&gt;
 &lt;dt id="send_message-label"&gt;&amp;nbsp;&lt;/dt&gt;
 &lt;dd id="send_message-element"&gt;
 &lt;input type="submit" class="sendamessage" value="Send" id="send_message" name="send_message"&gt;&lt;/dd&gt;
 &lt;/div&gt;
&lt;/form&gt;


$("input.sendamessage").click(function(event) {
 event.preventDefault();

 var message = $('textarea#message').html();
 var id = $('input#id').val();

 console.log(message + '-' + id);
});
</code></pre>

or <a href="http://jsfiddle.net/patrioticcow/SvbZJ/1/">jsfiddle</a>

any ideas?

how to get the value of a textarea in jquery?

jQuery

我有这个表单，我正在尝试从文本区域获取值。出于某种原因，它不想这样做。<form action="/profile/index/sendmessage" method="post" enctype="application/x-www-form-urlencoded"> <div class="upload_form"> <dt id="message-label"><labe

问如何在jquery中获取文本区域的值？
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问如何在jquery中获取文本区域的值？
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