Window. onload vs $ (document). Ready ()

<SCRIPT src = "scripts/jquery-1.3.1.js"> </SCRIPT> <SCRIPT type = "text/JavaScript"> // $ (document ). ready (function () {// alert ("Hello, world! "); //}); Window. onload = function () {alert (" Hello, world! ") ;}</SCRIPT>
 

 

Window. onload:

You must wait until all content on the webpage is loaded;

You cannot concatenate multiple functions at the same time.Code:

Window. onload = function (){
Alert ("Hello, world 0! ");
};

Window. onload = function (){
Alert ("Hello, world 1! ");
}

Only execute alert ("Hello, world 1! ");

$ (Document). Ready ():

After the DOM structure is drawn, it is executed;

You can write multiple,

$ (Document). Ready (function (){
Alert ("Hello, world! ");
});
$ (Document). Ready (function (){
Alert ("Hello, world! 3 ");
});

Execute alert ("Hello, world! "); Then execute alert (" Hello, world! 3 ");
Can be abbreviated:

$ (Funtion (){

}