Make a message board with drop-down function_PHP tutorial

If there are too long messages in the message board, it will make the page very long. Do you think those very long message boards are uncomfortable to read, and you have to click the scroll bar many times every time.
If only the title appears at the beginning each time, click on the title and the content will appear below (note that it is not a pop-up window). Wouldn’t this be great!
Next let’s see how to implement it:
First, set an ID for each title and content. This is the ID setting for the first message. We set the ID of the title to td1 and the content to tdd1. Then The same goes down.
 
 Here is the title



Here is the content

Close

< ;/TD>


"onclick=goit(tdd1) onmouseout=noit(td1) onmouseover=onit(td1)"
These three sentences are the mouse event, noit () and onit() just change the color, goit() is the function to open or close the content, the specific function is as follows:



Finally, don’t forget to initialize your page by hiding the content first”

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