如何使用javascript回显今天的提醒日期？

echo '<script>alert('.date('Y-m-d H:i:s').')</script>';

I am a beginner and I would like to ask how is it possible for me to alert the current datetime. I tried the above code but it is not working.

I take it your date is a php var so you are breaking out of the single quote for the echo, but if it is a string, your js needs to be surrounded in quotes.

Try this:

echo '<script>alert("'.date('Y-m-d H:i:s').'")</script>';

Note the double quotes that will be echoed out around the date string

alert(new Date()) 

will be all that's required

In case you want to format it as well, please see here

Use script tag to enclose the alert as follows

echo '<script>alert("'.date('Y-m-d H:i:s').'");</script>';