JS Bin

var var1 = 45;

var X = 0;

​

var newParagraph = document.createElement("p");

var newText = document.createTextNode("Initial value of var1 = "+var1+" and X = "+X); 

newParagraph.appendChild(newText);

document.body.appendChild(newParagraph); 

​

var newParagraph1 = document.createElement("p");

var newText1 = document.createTextNode("Lets apply the following fourmula X = var1-- [ i.e. Post decrement of a variable ]");

newParagraph1.appendChild(newText1);

document.body.appendChild(newParagraph1);

X=var1--;

​

var newParagraph2 = document.createElement("p");

var newText2 = document.createTextNode("After post-decrement value of var1 = "+var1+" and X = "+X); 

newParagraph2.appendChild(newText2);

document.body.appendChild(newParagraph2);

​

var var1 = 45;

var X = 0;

​

var newParagraph3 = document.createElement("p");

var newText3 = document.createTextNode("Initial value of var1 = "+var1+" and X = "+X);

newParagraph3.appendChild(newText3);

document.body.appendChild(newParagraph3);

​

var newParagraph4 = document.createElement("p");

var newText4 = document.createTextNode("Lets apply the following fourmula X = --var1 [ i.e. Pre decrement of a variable ]");

newParagraph4.appendChild(newText4);

document.body.appendChild(newParagraph4);

X=--var1;

​

var newParagraph5 = document.createElement("p");

var newText5 = document.createTextNode("After pre-decrement value of var1 = "+var1+" and X = "+X); 

newParagraph5.appendChild(newText5);

document.body.appendChild(newParagraph5);