JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <span>something</span>
    <span>somethingelse</span>    
</div>

JavaScript

try{
    
    //this generates a syntax error
    var els = document.querySelectorAll( 
                'span:contains("something")' );

}catch(e){alert(e)}
    
//the same selector work without errors: 
//the selector without mistakes
alert($('span:contains("something")').length);