How do you get the length of a string?
JavascriptJqueryString LengthJavascript Problem Overview
How do you get the length of a string in jQuery?
Javascript Solutions
Solution 1 - Javascript
You don't need jquery, just use yourstring.length. See reference here and also here.
Update:
To support unicode strings, length need to be computed as following:
[..."𠮷"].length
or create an auxiliary function
function uniLen(s) {
return [...s].length
}
Solution 2 - Javascript
The easiest way:
$('#selector').val().length
Solution 3 - Javascript
jQuery is a JavaScript library.
You don't need to use jQuery to get the length of a string because it is a basic JavaScript string object property.
somestring.length;
Solution 4 - Javascript
HTML
<div class="selector">Text mates</div>
SCRIPT
alert(jQuery('.selector').text().length);
RESULT
10
Solution 5 - Javascript
You don't need to use jquery.
var myString = 'abc';
var n = myString.length;
n will be 3.
Solution 6 - Javascript
A somewhat important distinction is if the element is an input or not. If an input you can use:
$('#selector').val().length;
otherwise if the element is a different html element like a paragraph or list item div etc, you must use
$('#selector').text().length;
Solution 7 - Javascript
It's not jquery you need, it's JS:
alert(str.length);
Solution 8 - Javascript
same way you do it in javascript:
"something".length
Solution 9 - Javascript
In some cases String.length might return a value which is different from the actual number of characters visible on the screen (e.g. some emojis are encoded by 2 UTF-16 units):
MDN says: This property returns the number of code units in the string. UTF-16, the string format used by JavaScript, uses a single 16-bit code unit to represent the most common characters, but needs to use two code units for less commonly-used characters, so it's possible for the value returned by length to not match the actual number of characters in the string.
In Unicode separate visible characters are called graphemes. In case you need to account for this case, you'll need some lib that can split the string into graphemes, such as this: https://www.npmjs.com/package/grapheme-splitter
Solution 10 - Javascript
In jQuery :
var len = jQuery('.selector').val().length; //or
( var len = $('.selector').val().length;) //- If Element is Text Box
OR
var len = jQuery('.selector').html().length; //or
( var len = $('.selector').html().length; ) //- If Element is not Input Text Box
In JS :
var len = str.length;