How to use only CSS properties of an element on mouseover and mouse click? An example of a button and vertical menu on an SCC.
If you want your ad not to be hidden when scrolling through the site page. This algorithm shows the block when it scrolls off the screen.
How do I select an element inside the this construct? How does this jquery work?
How to set and get cookies using Java Script and PHP. Set lifetime and delete cookies.
How to put the AND, OR, NEGATIVE icon correctly for logical operators. Ternary operator If. Comparison operators for programming languages Java Script and PHP.
You can create tags in any container. The new tag can be placed at the beginning or end of the parent tag. You can use the Java Script or JQuery commands.
What to do when the table in the database is large? How to optimize the storage of information on different tables? How to automatically create new tables in php. And how to combine several tables of the same type, identical in structure, with the same columns into one temporary, virtual table in the PHP programming language.
How to make SQL request, sample for the last 2 days or 15 minutes.