psycalc

function myFunction (myArg1) {
return myArg1; 
}
window.myFunction(1);

psycalc

var firstObject = {
name: "firstFunction",
length: 0,
prototype: parentSecondObject
};
var parentSecondObject = {
constructor: console.log("hello world")
}
firstFunction();

psycalc

will evaluate to true if value is not:

null
undefined
NaN
empty string ("")
0
false

psycalc

// http://www.soundjay.com/rain-sound-effect.html
    var audio = new Audio("http://www.soundjay.com/nature/rain-01.mp3");
audio.play();

psycalc

 irm -Uri "https://en.wikipedia.org/w/api.php?action=query&titles=Main%20Page&prop=revisions&rvprop=content&format=json" -Method Get

psycalc

var remoteUrlWithOrigin = "https://en.wikipedia.org/w/api.php?action=query&titles=Main%20Page&prop=revisions&rvprop=content&format=json";
// Using jQuery
jQuery.ajax( {
    url: remoteUrlWithOrigin,
  //because of cross-orginig error that is why jsonp
    dataType: 'jsonp',
    type: 'GET',
    //which function to call when all is succeseed
    success: function(data) {
       // do something with data

psycalc

//jQuery: $("#foo").empty();
var myNode = document.getElementById("foo");
while (myNode.firstChild) {
    myNode.removeChild(myNode.firstChild);
}

psycalc

//plain javascript getElementById("search").addEventListener("oninput",function (e) {...});
$('#search').on('input', function(e) {
    if('' == this.value) {
      //here push your code
    }
});

psycalc

//try to find 7923
for (var i=Number(window.location.href.toString().replace(/\D/ig,""));i<=7923;i++) {
window.location.href = window.location.href.replace(/\d/ig,"") + i;
}  

psycalc

var animal = {
  eats: true
};

function Rabbit(name) {
  this.name = name;
  //this.__proto__ = animal;
}
Rabbit.prototype = animal;// what save to __proto__ after calling new Rabbit("string"); this line does not do anything, it require new operator