JavaScript: Push & new Object by reference

JavaScriptBehaviour

// Very interesting JavaScript behaviour:


var mOptions = {abc:"def", ghi: "jkl"};
console.log(mOptions);
var a = this.mOptions;

console.log(a);
var x = [];
x.push(a);
console.log(x);
a.abc="Miau !";
console.log(x);
console.log(mOptions);


// -------



var mOptions = {abc:"def", ghi: "jkl"};
console.log(mOptions);
var a = new Object(this.mOptions);

console.log(a);
var x = [];
x.push(a);
console.log(x);
a.abc="Meow !";
console.log(x);
console.log(mOptions);



// ====================================



var mOptions = {abc:"def", ghi: "jkl"};
console.log(mOptions);
var a = JSON.parse(JSON.stringify(this.mOptions));

console.log(a);
var x = [];
x.push(a);
console.log(x);
a.abc="Miau !";
console.log(x);
console.log(mOptions);
this.mOptions.abc = "ROFL";