How to make a local refresh of the page?

How to organize logically?

1. JS Timer refresh function setinterval (function,time) is required.

2. Only the local labels in the Web page need to be refreshed

function is a custom function, time is how long to execute a custom function, in milliseconds

3. You can make a local refresh by defining a custom function, you need to import jquery

Code demo, how?

    SetInterval (function() {          $ ("#history"). Load (location.href+ "#history >*", "");     2000);

Define a timer, refresh once in 2 seconds, customize function functions each time the refresh executes all content id=history in the Id=history refresh load on the specified Web page

Location.href says refresh this page

Load means loading a webpage, selectively adding some elements to the Web page, load (Url,[data],[callback])

ULR represents the URL #some > selector, is a string, the URL and # have spaces in the middle, specifies that the loaded Url,id=some label,> represents the load, * denotes all, + represents string concatenation

[] represents optional, data data is Key/value form, callback represents callback function, function executed after loading is completed

What are the application scenarios?

　　In situations where real-time requirements are high, such as stock trading, airline ticket booking, etc.　

How to make a local refresh of the page?