Three commonly used methods for initializing jQuery page loading_jquery

When the page is opened, we need to perform some operations. If we choose to use jquery at this time, we need to rewrite its 3 methods. I feel that there is no difference

. It depends on personal preference. The second feeling is more Simple and clear:

First type:

Copy code The code is as follows:

Copy code The code is as follows:

Firefox press f12 to debug why not use alert instead of console.log! Everyone should be clear about this!

Second type:

Copy code The code is as follows:

Third Middle:

Copy code The code is as follows:

ps; No need for jquery, the method of initializing the page is,

1. Write onload in the body

2. Write

in the script Copy code The code is as follows:

window.onload=function(){
//Things to be initialized
}