JS Cheatsheet

////////////// HTML - CONSOLE.log /////// 
<pre id="log"></pre>

(function () {
    var _log = console.log;
    var logger = document.getElementById("log");
    
    console.log = function (message) {
        if (typeof message == "object") {
            logger.innerHTML += (JSON && JSON.stringify ? JSON.stringify(message) : message) + "\n";
        } else {
            logger.innerHTML += message + "\n";
        }
       // logger.innerHTML += JSON.stringify(arguments) + "\n"; or simpler
     
        _log.apply(console, arguments);
    }
})();

/*********** PROMISE FETCH FORM DATA + OWA**************/
function test(){
var formData = new URLSearchParams();
        formData.set("p_skey", _SKEY);
        formData.set("p_id", id);
        formData.set("p_store", store);
        formData.set("p_finger_1", finger);

    return fetch("https://fingerprint_skud.enrollFinger",{
          credentials: 'include', //pass cookies, for authentication
          method: 'post',
          headers: {'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8'},
          body: formData
    }) 
    .then((response)=>{
        return response.json()
    }).then((data)=>{
      if(data.result == "error") {
        return Promise.reject(data.message)
      } else {
        return data
      }
    })