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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Summary
Scrolls the document by the given number of lines.
Syntax
window.scrollByLines(lines)
Parameters
linesis the number of lines to scroll the document by.linesmay be a positive or negative integer.
Example
<!-- scroll down the document by 5 lines. --> <button onclick="scrollByLines(5);">down 5 lines</button>
<!-- scroll up the document by 5 lines. --> <button onclick="scrollByLines(-5);">up 5 lines</button>
Specification
This is not part of any specification