Onload event and ready function in jquery

 The same point:
       the ready function executes the
       onload event after the document is loaded, and it is also executed after the document is loaded. The
   difference:
       1. The ready function is executed after the label of the document is loaded, and the onload is executed after all the contents of the document are loaded. 2. Only one onload can appear
       in the document, and N can appear in the ready function