check if an item id exists in javascript

checks if 2 ids exist in one function and console logs the status here is the result in console log

add a button to an existing link using :after css

Adding a button style to an existing link using :after and css. Preview

best way to write html into an existing page javascript

this probably isnt the "best way" but it is a way that works. say you want to add some elements to a page with javascript this is a method to do it.  Add an element, before including the script..

php check if a class exists

check if a class exists in php. this can be used rather than assuming the class exists and then causing an error You can run the class_exists function on the class before loading it with the followi..

check if a file exists with php

checks if a file exists in php returns true of false

check if the file is a directory or check if the directory exists in php

this checks if the file is a directory or if the directory exists

check if a product already exists by its md5

jquery check if a sub element exists

this can be done with .length

check column exists in table sqlite

this will return 1 if the column name exists in the table or 0 if it does not

find and replace hrefs in existing page links using jquery

sometimes i have to do these things when you cant change the source files for some reason, usually due to old code. Its kind of a patch, but it works. The reason i had to add a delay in running the fu..

force existing link to open in a new window with javascript

here is some javascript that grabs an existing link and then forces it to open in a new tab when clicked.

php mysql table exists function

this checks if a mysql table already exists in the selected database and returns true or false

sqlite check table name exists

check that the table name exists in a sqlite database, this function it taken from a class.