JSFiddle - React, Tailwind, and code Playground

JavaScript

$( document ).ready(function() {
    alert(anythingInCommon('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa','cddabddde'));
});
          
function anythingInCommon(stra, strb){

    if(strb.length < stra.length){
        temp = stra;
        stra = strb
        strb = temp;
    }

    for (var i = 0, len = stra.length; i < len; i++) {
      if(strb.indexOf(stra[i]) != -1)
          return true;
    }
    return false
}