JSFiddle - React, Tailwind, and code Playground

by Mirosław Hajkowski

HTML

<script>
    var str = "Hello world! ale nie wiem czy to jakies ma znaczneie";
    var res = str.substring(5,14);
    var res2 = str.substr(5,14);
    $("body").append(res);
    $("body").append(res2);
    
    
    
</script>