Output Output text and variable Output Select box select value
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Array
Create an array Constants Variables Array Length Does array index exist?
Select Box
Causing Form To Submit OnChange Call function when selection changed Which item is selected? Show / Hide page elements depending on Select box item chosen PHP Javascript
Copy to clipboard
Most browsers will only allow copying of text from a visible input box or textarea Text area example for wordpress (jQuery) This example overwrites the textarea value in case user has altered it
Nested single and double quotes
If you’re using say onclick() and .innerHTML= as part of some inline javascript you may well run into a nested quotes issue. For example, maybe within your .innerHTML=’ you want to give some element an ID – you find you can’t because you need to surround that ID parameter with quotes and you’ve used say […]
Scroll to position
Scroll to location
Delay
Delay before runnngjavascript Within a link:
Changing an image
If you need to stop the image beign changed by a later script you can add this:
Validate text as you type
Good examples https://www.w3schools.com/howto/howto_js_password_validation.asp Remove non permitted characters from an input box as user types
Auto Submit A Form
Very simple method Auto submit from javascript Auto submit from paste or key up