Run results for: Regex checking whitespace vs trim for isEmptyOrOnlyWhitespace

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0

Browser: Firefox 113

Operating system: Windows

Device Platform: Desktop

Date tested: 11 months ago

Test name	Executions per second
regex	5412793.0 Ops/sec
trim	7305401.0 Ops/sec

Script Preparation code:

var string = '    fsajdf asdfjosa fjoiawejf oawjfoei jaosdjfsdjfo sfjos 2324234 sdf safjao j o        sdlfks dflks l      ';
var string2 = '	 	   	 	 	    	';
var string3 = '          			        		a            			           		 		  ';
var string4 = ' ';
var pattern = /^\s*$/;

Tests:

regex
pattern.test(string); pattern.test(string2); pattern.test(string3); pattern.test(string4);
trim
string.trim() === ''; string2.trim() === ''; string3.trim() === ''; string4.trim() === '';

Run results for: Regex checking whitespace vs trim for isEmptyOrOnlyWhitespace

Testing if IsOnlyWhitespace is faster with Regex or with trim

regex

trim