How to display the user ID of the currently logged in user by default in one input

How to display the user ID of the currently logged on user by default in one input
How to display the user ID of the currently logged on user by default in one input

The user name of the currently logged-in user can be read from one PHP

Echo ' document.write ("'. $userid. ') ';

In the HTML can be read through JS to this PHP output user ID

However, if you want the current user ID to be read directly to the page when it is opened, it is displayed by default in the box of input

What's the best way for you to ask the Boss? input javascript php html

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References:

There are two ways upstairs

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