How to retrieve first 2 record data when scroll 200px in page , retrive 200record second when scroll 400px in jquary?

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i want to retrieve first 2 record when scroll 200px in page . after that when scroll 400px ,retrieve second 2 record in database

What I have tried:

i am tried some code but it dose not work correctly can anyone give me solution for this problem

Posted 1-Jul-18 23:06pm

eslam saad

Updated 2-Jul-18 1:00am

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Afzaal Ahmad Zeeshan · Answer 1 · 2018-07-02T00:25:00

Consider using one of the infinite scroll jQuery libraries and pull the data as needed. Instead of writing the code yourself, that library can handle the scrolls and so on. Mostly what happens is that events are triggered — computers are accurate in calculations, and users might scroll at different speeds. These libraries can help in pulling data sequentially as needed.

One of such libraries: Infinite Scroll[^]

Krunal Rohit · Answer 2 · 2018-07-02T01:00:00

Let's break down your problem first.

1. Use paging (OFFSET/FETCH) to fetch records from DB
Example: Pagination with OFFSET / FETCH : A better way[^]

2. Check your current position with window.scroll() method

$(window).scroll(function() {
    if($(window).scrollTop() == $(document).height() - $(window).height()) {
           // ajax call get data from server and append to the div
    }
});

Example: Load data on page scroll using jquery - YouTube[^]

KR

How to retrieve first 2 record data when scroll 200px in page , retrive 200record second when scroll 400px in jquary?

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