blocks|key|2995794|text|可能的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2995795|2995796|变量为NUMBER+(不是string)；|unordered-list-item|offset|length|style|BOLD|2995797|2995798|num=35;++++num.replace(3,'three');++++++++++++++++=====>+ERROR|CODE|2995799|num=35;++++num.toString().replace(3,'three');+++++=====>+CORRECT+!!!!!!|2995800|num='35';++num.replace(3,'three');++++++++++++++++=====>+CORRECT+!!!!!!|2995801|variable是object+(而不是未定义string);|2995802|
|2995803|variable；|2995804|2995805|entityMap^0|0|0|3|6|0|0|0|1Q|0|0|1Z|0|0|1Z|0|9|6|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|12|8|@$F|13|G|14|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|16|8|@$F|17|G|18|H|M]]|9|@]|A|$]]|$1|N|3|O|5|6|7|19|8|@$F|1A|G|1B|H|M]]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1C|8|@$F|1D|G|1E|H|M]]|9|@]|A|$]]|$1|R|3|S|5|E|7|1F|8|@$F|1G|G|1H|H|I]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1I|8|@]|9|@]|A|$]]|$1|V|3|W|5|E|7|1J|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1L|8|@]|9|@]|A|$]]]|Z|$]]

<h1>probable issues:</h1>

<ul>
<li>variable is NUMBER (instead of string);
 <code>num=35; num.replace(3,'three'); =====&gt; ERROR</code>
 <code>num=35; num.toString().replace(3,'three'); =====&gt; CORRECT !!!!!!</code>
 <code>num='35'; num.replace(3,'three'); =====&gt; CORRECT !!!!!!</code></li>
<li>variable is object (instead of string);</li>
<li>variable is not defined;</li>
</ul>

blocks|key|2995814|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2995815|替换不会替换数字。它只替换字符串。|blockquote|2995816|2995817|2995818|这应该是可行的。|2995819|function+trim(str)+{
++++return+str.toString().replace(/%5E\s%2B%7C\s%2B$/g,'');
}|code-block|syntax|javascript|2995820|如果您只想修剪字符串。您可以简单地使用"str.trim()"|offset|length|style|BOLD|2995821|entityMap^0|0|0|0|0|0|0|J|C|0^^$0|@$1|2|3|-4|4|5|6|U|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|V|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|W|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|X|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|Y|7|@]|8|@]|9|$]]|$1|H|3|I|4|J|6|Z|7|@]|8|@]|9|$K|L]]|$1|M|3|N|4|5|6|10|7|@$O|11|P|12|Q|R]]|8|@]|9|$]]|$1|S|3|-4|4|5|6|13|7|@]|8|@]|9|$]]]|T|$]]

<blockquote>
 Replace wouldn't replace numbers. It replaces strings only.
</blockquote>

This should work.

<pre><code>function trim(str) {
 return str.toString().replace(/^\s+|\s+$/g,'');
}
</code></pre>

If you only want to trim the string. You can simply use "str.trim()"

blocks|key|2995684|text|您不是在传递字符串，否则它将有一个replace方法。我希望你没有输入return+str.replace而是function+trim(str)+{+return+var.replace(blah);+}。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2995685|entityMap^0|H|7|Z|I|1J|1C|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|O|8|@]|D|@]|E|$]]]|G|$]]

You are not passing a string otherwise it would have a <code>replace</code> method. I hope you didnt type <code>function trim(str) { return var.replace(blah); }</code> instead of <code>return str.replace</code>.

blocks|key|3209030|text|在实际执行函数之前，您可能应该做一些验证：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3209031|function+trim(str)+{
++++if(typeof+str+!==+'string')+{
++++++++throw+new+Error('only+string+parameter+supported!');
++++}

++++return+str.replace(/%5E\s%2B%7C\s%2B$/g,'');
}|code-block|syntax|javascript|3209032|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 should probably do some validations before you actually execute your function : 

<pre><code>function trim(str) {
 if(typeof str !== 'string') {
 throw new Error('only string parameter supported!');
 }

 return str.replace(/^\s+|\s+$/g,'');
}
</code></pre>

blocks|key|284497|text|你是否正确调用了你的函数？即。作为参数传递的东西真的是字符串吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|284498|否则，我看不出您的代码有什么问题--下面的示例按预期工作|284499|function+trim(str)+{
++++return+str.replace(/%5E\s%2B%7C\s%2B$/g,'');
}


trim('++++hello+++');++//+-->+'hello'|code-block|syntax|javascript|284500|但是，如果您使用非字符串调用您的functoin，您确实会得到上面的错误：|284501|trim({});++//+-->+TypeError:+str.replace+is+not+a+function|284502|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Did you call your function properly? Ie. is the thing you pass as as a parameter really a string?

Otherwise, I don't see a problem with your code - the example below works as expected

<pre><code>function trim(str) {
 return str.replace(/^\s+|\s+$/g,'');
}


trim(' hello '); // --&gt; 'hello'
</code></pre>

However, if you call your functoin with something non-string, you will indeed get the error above:

<pre><code>trim({}); // --&gt; TypeError: str.replace is not a function
</code></pre>

blocks|key|2995841|text|如果是数字，可以尝试将其转换为字符串：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2995842|var+stringValue+=+str.toString();
return+stringValue.replace(/%5E\s%2B%7C\s%2B$/g,'');|code-block|syntax|javascript|2995843|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 case of a number you can try to convert to string:

<pre><code>var stringValue = str.toString();
return stringValue.replace(/^\s+|\s+$/g,'');
</code></pre>

blocks|key|2995807|text|之前应该使用java脚本的toString()方法来转换成字符串，因为replace方法是一个字符串函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2995808|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|$]]

You should use toString() Method of java script for the convert into string before because replace method is a string function.

blocks|key|283147|text|我解决了这个问题...对不起，我应该把代码放在我是如何调用它的……我意识到我意外地传递了表单域本身的对象，而不是它的值。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|283148|无论如何，感谢您的回复。:)|283149|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

I fixed the problem.... sorry I should have put the code on how I was calling it too.... realized I accidentally was passing the object of the form field itself rather than it's value.

Thanks for your responses anyway. :)

blocks|key|286911|text|确保将字符串传递给"replace“方法。有同样的问题，并通过传递字符串来解决它。也可以使用toString()方法将其转换为字符串。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|286912|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|$]]

make sure you are passing string to &quot;replace&quot; method. Had same issue and solved it by passing string. You can also make it to string using toString() method.

I'm using the below code to try to trim the string in Javascript but am getting the error mentioned in the title:

<pre><code>function trim(str) {
 return str.replace(/^\s+|\s+$/g,'');
}
</code></pre>

Edit:

I fixed the problem.... sorry I should have put the code on how I was calling it too.... realized I accidentally was passing the object of the form field itself rather than its value.

var.replace is not a function

我正在使用下面的代码尝试修剪Javascript中的字符串，但我得到了标题中提到的错误：function trim(str) {    return str.replace(/^\s+|\s+$/g,'');}编辑：我解决了这个问题...对不起，我应该把代码放在我是如何调用它的……我意识到我意外地传递了表单域本身的对象，而不是它的值。

问var.replace不是一个函数
EN

回答 9

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问var.replace不是一个函数EN

回答 9

Stack Overflow用户

Stack Overflow用户

Stack Overflow用户

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问var.replace不是一个函数
EN