How do you get the length of a string?
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20-08-2019 - |
Question
How do you get the length of a string in jQuery?
OTHER TIPS
The easiest way:
$('#selector').val().length
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;
HTML
<div class="selector">Text mates</div>
SCRIPT
alert(jQuery('.selector').text().length);
RESULT
10
You don't need to use jquery.
var myString = 'abc';
var n = myString.length;
n will be 3.
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;
It's not jquery you need, it's JS:
alert(str.length);
same way you do it in javascript:
"something".length
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.len;
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.