JavaScript to search for a string and return search results to a string

Source: Internet
Author: User

This example describes a method for JavaScript search strings and returning search results to a string. Share to everyone for your reference. Specifically as follows:

The JavaScript action string comes with a match method for searching the string, returns the search string if the specified string is found, and returns the Null,match method if not found case sensitive

1 2 3 4 5 6 7 8 9 10 11-12 <! DOCTYPE html>

return Result:

World
Null
Null
world!

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