How do I trim a string in JavaScript? That is, how do I remove all whitespace from the beginning and the end of the string in JavaScript?

Trim string in JavaScript?

How do I remove leading and trailing whitespace from a string in Python?

    &quot; Hello world &quot; --&gt; &quot;Hello world&quot;
    &quot; Hello world&quot;  --&gt; &quot;Hello world&quot;
    &quot;Hello world &quot;  --&gt; &quot;Hello world&quot;
    &quot;Hello world&quot;   --&gt; &quot;Hello world&quot;



How do I trim whitespace from a string?

In my angular 5 project, with typescript I am using the .trim() function on a string like this, But it is not removing the whitespace and also not giving any error. 

    this.maintabinfo = this.inner_view_data.trim().toLowerCase();
    // inner_view_data has this value = &quot;Stone setting&quot;

https://www.typescriptlang.org/docs/handbook/release-notes/typescript-1-4.html This docs clearly say that `.trim()` is part of the typescript. 

What is best way to remove whitespace in from a string in typescript? 

How to remove whitespace from a string in typescript?

How do I, from an output, only select the first 10 words?

How to select first 10 words of a sentence?

I have a input string like:

    $str = &#39;:this is a applepie :) &#39;;

How can I remove the first occurring `:` with PHP?

Desired output: `this is a applepie :) `

How to remove the leading character from a string?

Is there a Python function that will trim whitespace (spaces and tabs) from a string?

```
&quot;  \t example string\t  &quot;   →   &quot;example string&quot;

How do I trim whitespace?

I have a shell script with this code:

    var=`hg st -R &quot;$path&quot;`
    if [ -n &quot;$var&quot; ]; then
        echo $var
    fi

But the conditional code always executes, because `hg st` always prints at least one newline character.

* Is there a simple way to strip whitespace from `$var` (like `trim()` in [PHP][1])?

or

* Is there a standard way of dealing with this issue?

I could use [sed][2] or [AWK][3], but I&#39;d like to think there is a more elegant solution to this problem.

  [1]: http://en.wikipedia.org/wiki/PHP
  [2]: http://en.wikipedia.org/wiki/Sed
  [3]: http://en.wikipedia.org/wiki/AWK


How to trim whitespace from a Bash variable?

How can I, using Javascript, make a function that will trim string passed as argument, to a specified length, also passed as argument. For example:

    var string = &quot;this is a string&quot;;
    var length = 6;
    var trimmedString = trimFunction(length, string);
    
    // trimmedString should be:
    // &quot;this is&quot;

Anyone got ideas? I&#39;ve heard something about using substring, but didn&#39;t quite understand.

How to trim a string to N chars in Javascript?

I want to eliminate all the whitespace from a string, on both ends, and in between words.

This only eliminates the whitespace on both sides of the string:

    &gt;&gt;&gt; &quot;  hello  apple  &quot;.strip()
    &#39;hello  apple&#39;

How do I remove all whitespace?

Remove all whitespace in a string

Say we have the following string 

    string data= &quot;/temp string&quot;;

If we want to remove the first character `/` we can do by a lot of ways such as :

    data.Remove(0,1);
    data.TrimStart(&#39;/&#39;);
    data.Substring(1);

But, really I don&#39;t know which one has the best algorithm and doing that faster..  &lt;br/&gt;
**Is there a one that is the best or all are the same ?**  

Fastest way to remove first char in a String

How can I remove all white space from the beginning and end of a string?

Like so:

`&quot;hello&quot;` returns `&quot;hello&quot;`  
`&quot;hello   &quot;` returns `&quot;hello&quot;`  
`&quot; hello   &quot;` returns `&quot;hello&quot;`  
`&quot; hello world   &quot;` returns `&quot;hello world&quot;`


How to remove all white space from the beginning or end of a string?

I have a text string that starts with a number of spaces, varying between 2 &amp; 4.

What is the simplest way to remove the leading whitespace? (ie. remove everything before a certain character?)


    &quot;  Example&quot;   -&gt; &quot;Example&quot;
    &quot;  Example  &quot; -&gt; &quot;Example  &quot;
    &quot;    Example&quot; -&gt; &quot;Example&quot;

How do I remove leading whitespace in Python?

I&#39;m currently using the following code to right-trim all the `std::strings` in my programs:

    std::string s;
    s.erase(s.find_last_not_of(&quot; \n\r\t&quot;)+1);

It works fine, but I wonder if there are some end-cases where it might fail?

Of course, answers with elegant alternatives and also left-trim solution are welcome.

How to trim a std::string?

For example, I would like to create an array from the elements in this string:
    
    $str = &#39;red,     green,     blue ,orange&#39;;

I know you can explode and loop through them and trim:
    
    $arr = explode(&#39;,&#39;, $str);
    foreach ($arr as $value) {
        $new_arr[] = trim($value);
    }

But I feel like there&#39;s a one line approach that can handle this. Any ideas?

How can I explode and trim whitespace?

I have strings with extra whitespace characters. Each time there&#39;s more than one whitespace, I&#39;d like it be only one. How can I do this using JavaScript?

Replace multiple whitespaces with single whitespace in JavaScript string

What&#39;s a clean and efficient JavaScript implementation to strip leading and trailing spaces from a string? 

For example:

`&quot; dog&quot;`

`&quot;dog &quot;`

`&quot; dog &quot;`

`&quot;           dog &quot;`

all get turned into

`&quot;dog&quot;`

String strip() for JavaScript?

Is there a clean, preferably standard method of trimming leading and trailing whitespace from a string in C? I&#39;d roll my own, but I would think this is a common problem with an equally common solution.

How do I trim leading/trailing whitespace in a standard way?

What&#39;s the **JavaScript** equivalent to this `C#` Method:

    var x = &quot;|f|oo||&quot;; 
    var y = x.Trim(&#39;|&#39;); //  &quot;f|oo&quot;


C# trims the selected character only at the **beginning** and **end** of the string!

Trim specific character from a string

If I have this array:

    array(&quot;  hey  &quot;, &quot;bla  &quot;, &quot;  test&quot;);

and I want to trim all of them, How can I do that?

The array after the trim:

    array(&quot;hey&quot;, &quot;bla&quot;, &quot;test&quot;);

How can I trim all strings in an Array?

I would like to trim a beginning and ending double quote (&quot;) from a string.  
How can I achieve that in Java? Thanks!

How can I trim beginning and ending double quotes from a string?

Among other changes, JDK 11 introduces 6 new methods for java.lang.String class:

 - `repeat(int)` - Repeats the String as many times as provided by the `int` parameter
 - `lines()` - Uses a Spliterator to lazily provide lines from the source string
 - `isBlank()` - Indicates if the String is empty or contains only white space characters
 - `stripLeading()` - Removes the white space from the beginning
 - `stripTrailing()` - Removes the white space from the end
 - **`strip()`** - Removes the white space from both, beginning and the end of string	

In particular, `strip()` looks very similar to `trim()`. As per [this article][1] `strip*()` methods are designed to:

&gt; The String.strip(), String.stripLeading(), and String.stripTrailing()
&gt; methods trim white space [as determined by Character.isWhiteSpace()]
&gt; off either the front, back, or both front and back of the targeted
&gt; String.

`String.trim()` JavaDoc states:

    /**
      * Returns a string whose value is this string, with any leading and trailing
      * whitespace removed.
      * ...
      */

Which is almost identical to the quote above.

What exactly the difference between `String.trim()` and `String.strip()` since Java 11?


  [1]: https://dzone.com/articles/applying-new-jdk-11-string-methods

Difference between String trim() and strip() methods in Java 11

I want to replace all occurrences of white space characters (space, tab, newline) in JavaScript.  
How to do so?  

I tried:

    str.replace(/ /gi, &quot;X&quot;)

Replace all whitespace characters

I want to split this line:

    string line = &quot;First Name ; string ; firstName&quot;;

into an array of their trimmed versions:

    &quot;First Name&quot;
    &quot;string&quot;
    &quot;firstName&quot;

**How can I do this all on one line?** The following gives me an error &quot;cannot convert type void&quot;:


    List&lt;string&gt; parts = line.Split(&#39;;&#39;).ToList().ForEach(p =&gt; p.Trim()); 

How can I split and trim a string into parts all on one line?

I&#39;ve read [this question][1] about javascript trim, with a regex answer.

Then I expect trim to remove the *inner* space between Hello and World.  

    function myFunction() {
        alert(&quot;Hello World &quot;.trim());
    }


**EDITED**

**Why I expected that!?** 

Nonsense! Obviously trim doesn&#39;t remove inner spaces!, only leading and trailing ones, that&#39;s how trim works, then this was a very wrong question, my apologies.


  [1]: https://stackoverflow.com/questions/498970/how-do-i-trim-a-string-in-javascript

Remove whitespaces inside a string in javascript

Cleaning the values of a multitype data frame in python/pandas, I want to trim the strings. I am currently doing it in two instructions :

    import pandas as pd

    df = pd.DataFrame([[&#39;  a  &#39;, 10], [&#39;  c  &#39;, 5]])

    df.replace(&#39;^\s+&#39;, &#39;&#39;, regex=True, inplace=True) #front
    df.replace(&#39;\s+$&#39;, &#39;&#39;, regex=True, inplace=True) #end

    df.values


This is quite slow, what could I improve ?


Strip / trim all strings of a dataframe

Is there a way to force Xcode to trim trailing whitespaces when I save file?

I&#39;m using version 3.1.3 if that matters.

Trim trailing spaces in Xcode

I have a string, `12345.00`, and I would like it to return `12345.0`.

I have looked at `trim`, but it looks like it is only trimming whitespace and `slice` which I don&#39;t see how this would work. Any suggestions?



How do I chop/slice/trim off last character in string using Javascript?

In Java, I have a String like this:

    &quot;     content     &quot;.

Will `String.trim()` remove all spaces on these sides or just one space on each?

How many spaces will Java String.trim() remove?

I am making use of trim() like so:

    if($(&#39;#group_field&#39;).val().trim()!=&#39;&#39;){

Where `group_field` is an input element of type text. This works in Firefox but when I try it on IE8 it gives me this error:

    Message: Object doesn&#39;t support this property or method

When I remove the trim(), it works fine on IE8. I thought the way I am using trim() is correct?

Thanks all for any help

IE8 and JQuery&#39;s trim()

I use WinForms c#.I have string value like below,

    string Something = &quot;1,5,12,34,&quot;;

I need to remove last comma in a string. So How can i delete it ?


Remove last specific character in a string c#

Greetings everyone... I need to `Trim` a `String`. But I want to remove all the repeated blank spaces within the String itself, not only at the end or at the start of it. I could do it with a method like:

    public static string ConvertWhitespacesToSingleSpaces(string value)
    {
        value = Regex.Replace(value, @&quot;\s+&quot;, &quot; &quot;);
    }
Which I got from [here][1]. But I want this piece of code to be called within the `String.Trim()` itself, so I think I need to extend or overload or override the `Trim` method... Is there a way to do that?

Thanks in advance.


  [1]: http://dotnetperls.com/whitespace

How to extend C# built-in types, like String?

I have several strings that look like this:

    &quot;((String1))&quot;

They are all different lengths. How could I remove the parentheses from all these strings in a loop?

How to delete specific characters from a string in Ruby?

I tried to apply [`.trim()`][1] to a string in one of my JavaScript programs. It&#39;s working fine under Mozilla, but an error displays when I try it in IE8.  Does anyone know what is going on here? Is there anyway I can make it work in IE?

###code:

    var ID = document.getElementByID(&#39;rep_id&#39;).value.trim();

###error display:
&lt;pre&gt;Message: Object doesn&#39;t support this property or method
Line: 604
Char: 2
Code: 0
URI: http://test.localhost/test.js&lt;/pre&gt;


  [1]: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/trim

.trim() in JavaScript not working in IE

Want to trim each string in an array, e.g., given

    x = [&#39; aa &#39;, &#39; bb &#39;];

output

    [&#39;aa&#39;, &#39;bb&#39;]
     
My first trial is

    x.map(String.prototype.trim.apply)

It got &quot;TypeError: Function.prototype.apply was called on undefined, which is a undefined and not a function&quot; in chromium.

Then I tried

    x.map(function(s) { return String.prototype.trim.apply(s); });

It works. What&#39;s the difference?

Javascript - Apply trim function to each string in an array

I can loop through all of the rows in a php script and do

 `UPDATE mytable SET title = &quot;&#39;.trim($row[&#39;title&#39;]).&#39;&quot; where id = &quot;&#39;.$row[&#39;id&#39;].&#39;&quot;;`

and trim can remove \n 


But I was just wondering if something same could be done in one query?

     update mytable SET title = TRIM(title, &#39;\n&#39;) where 1=1

will it work? I can then just execute this query without requiring to loop through!

thanks

(PS: I could test it but table is quite large and dont want to mess with data, so just thought if you have tested something like this before)

How to remove new line characters from data rows in mysql?

I&#39;m trying to remove all the spaces from a string derived from user input, but for some reason it isn&#39;t working for me. Here is my code.

	public void onClick(View src) {
		switch (src.getId()) {
			case R.id.buttonGo:
				String input = EditTextinput.getText().toString();
				input = String.replace(&quot; &quot;, &quot;&quot;);
				url = ur + input + l;
				Intent myIntent = new Intent(start.this, Main.class);
				myIntent.putExtra(&quot;URL&quot;, url);
				start.this.startActivity(myIntent);
				break;
			}
	}

Removing spaces from string

Say I have a table column that has results like:

    ABC_blahblahblah
    DEFGH_moreblahblahblah
    IJKLMNOP_moremoremoremore

I would like to be able to write a query that selects this column from said table, but only returns the substring up to the Underscore (_) character. For example:

    ABC
    DEFGH
    IJKLMNOP

The SUBSTRING function doesn&#39;t seem to be up to the task because it is position-based and the position of the underscore varies.

I thought about the TRIM function (the RTRIM function specifically):

    SELECT RTRIM(&#39;listofchars&#39; FROM somecolumn) 
    FROM sometable

But I&#39;m not sure how I&#39;d get this to work since it only seems to remove a certain list/set of characters and I&#39;m really only after the characters leading up to the Underscore character.

How to Select a substring in Oracle SQL up to a specific character?

Does swift have a trim method on String? For example:

    let result = &quot; abc &quot;.trim()
    // result == &quot;abc&quot;

Does swift have a trim method on String?

I have a string that comes in like:

    string email = &quot;a@a.com, b@b.com, c@c.com&quot;;

I want to split it into an array of strings

If I do this:
 
    string[] emails = email.Split(&#39;,&#39;);

I get spaces in front of each email address (after the first one):
 
    emails[0] = &quot;a@a.com&quot;
    emails[1] = &quot; b@b.com&quot;
    emails[2] = &quot; c@c.com&quot;

What is the best way to get this (either a better way to parse or a way to trim all strings in an array)?

    emails[0] = &quot;a@a.com&quot;
    emails[1] = &quot;b@b.com&quot;
    emails[2] = &quot;c@c.com&quot;


trim all strings in an array

How can I trim characters in Java?  
e.g. 

    String j = “\joe\jill\”.Trim(new char[] {“\”});

*j* should be 

&gt; &quot;joe\jill&quot;

    String j = “jack\joe\jill\”.Trim(&quot;jack&quot;);
*j* should be 

&gt; &quot;\joe\jill\&quot;

etc


Trim characters in Java

I am having some trouble with leading and trailing white space in a data.frame.

For example, I look at a specific `row` in a `data.frame` based on a certain condition:

&lt;!-- Note: Trailing white space in this section (for the first three non-empty lines) --&gt; 

    &gt; myDummy[myDummy$country == c(&quot;Austria&quot;),c(1,2,3:7,19)] 



    [1] codeHelper     country        dummyLI    dummyLMI       dummyUMI       

    [6] dummyHInonOECD dummyHIOECD    dummyOECD      

    &lt;0 rows&gt; (or 0-length row.names)

I was wondering why I didn&#39;t get the expected output since the country Austria obviously existed in my `data.frame`. After looking through my code history and trying to figure out what went wrong I tried:

    &gt; myDummy[myDummy$country == c(&quot;Austria &quot;),c(1,2,3:7,19)]
       codeHelper  country dummyLI dummyLMI dummyUMI dummyHInonOECD dummyHIOECD
    18        AUT Austria        0        0        0              0           1
       dummyOECD
    18         1

All I have changed in the command is an additional white space after Austria.

Further annoying problems obviously arise. For example, when I like to merge two frames based on the country column. One `data.frame` uses `&quot;Austria &quot;` while the other frame has `&quot;Austria&quot;`. The matching doesn&#39;t work.

 1. Is there a nice way to &#39;show&#39; the white space on my screen so that I am aware of the problem?
 2. And can I remove the leading and trailing white space in R?

So far I used to write a simple [Perl][1] script which removes the whites pace, but it would be nice if I can somehow do it inside R.

  [1]: https://en.wikipedia.org/wiki/Perl





How can I trim leading and trailing white space?

What function will turn  `this contains       spaces`  into `this contains spaces` using javascript?

I&#39;ve tried the following, using similar SO questions, but could not get this to work.

    var string = &quot; this contains   spaces &quot;;
    
    newString = string.replace(/\s+/g,&#39;&#39;); // &quot;thiscontainsspaces&quot;
    newString = string.replace(/ +/g,&#39;&#39;);  //&quot;thiscontainsspaces&quot;

Is there a simple pure javascript way to accomplish this? 




How to remove the extra spaces in a string?

`jQuery` `trim` not working. I wrote the following command to remove white space. Whats wrong in it?

    var str = $(&#39;input&#39;).val();

    str = jquery.trim(str);
    console.log(str);

[Fiddle][1] example.


  [1]: http://jsfiddle.net/dMr2C/

Trim to remove white space

I need to remove spaces from the end of a string. How can I do that?
Example: if string is `&quot;Hello    &quot;` it must become `&quot;Hello&quot;`

Trim spaces from end of a NSString

today I was wondering if there is a better solution perform the following code sample.

    string keyword = &quot; abc, foo  ,     bar&quot;;
    string match = &quot;foo&quot;;
    string[] split= keyword.Split(new char[] { &#39;,&#39;, &#39;;&#39; }, StringSplitOptions.RemoveEmptyEntries);
    foreach(string s in split)
    {
      if(s.Trim() == match){// asjdklasd; break;}
    }

Is there a way to perform trim() without manually iterating through each item? I&#39;m looking for something like &#39;split by the following chars and automatically trim each result&#39;. 

Ah, immediatly before posting I found

    List&lt;string&gt; parts = line.Split(&#39;;&#39;).Select(p =&gt; p.Trim()).ToList();
 in https://stackoverflow.com/questions/1728303/how-can-i-split-and-trim-a-string-into-parts-all-on-one-line

Still I&#39;m curious: Might there be a better solution to this? (Or would the compiler probably convert them to the same code output as the Linq-Operation?)


Perform Trim() while using Split()

How do you trim whitespace from the start and end of a string?

    trim &quot;  abc &quot; 

    =&gt;

    &quot;abc&quot;

Edit:

Ok, let me be a little clearer. I did not understand that string literals were treated so differently from Strings.

I would like to do this:

    import qualified Data.Text as T
    let s :: String = &quot;  abc  &quot;
    in T.strip s

Is this possible in Haskell? I am using -XOverloadedStrings but that appears only to work for literals.

In Haskell, how do you trim whitespace from the beginning and end of a string?

How can I trim the leading or trailing characters from a string in java? 

For example, the slash character &quot;/&quot; - I&#39;m not interested in spaces, and am looking to trim either leading or trailing characters at different times.



Trim leading or trailing characters from a string?

What is a good alternative of JavaScript `ltrim()` and `rtrim()` functions in Java?


All Trim Solutions on Gang of Coders

Total of 48 Trim Solutions