jquery document load

1// jQuery document ready
2$(document).ready(function() {
3    
4});

1$(document).ready(function () {
2  // Function code here.
3});

1$(document).ready(function() {
2  // code here
3});

1$(function(){
2  // equal to $( document ).ready(function() {
3});
4  

1$( window ).load(function() {
2  // Run code
3});
4

1jQuery offers several ways to attach a function that will run when the DOM is ready. All of the following syntaxes are equivalent:
2
3$( handler )
4$( document ).ready( handler )
5$( "document" ).ready( handler )
6$( "img" ).ready( handler )
7$().ready( handler )