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How to Add Numbers in Javascript
I have been programming in PHP much longer than I’ve been programming in Javascript. As a matter of fact, I really haven’t programmed much in Javascript at all. I’ve copied and pasted a lot of snippets...
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PHP’s Built-in Server Variables
For those of you who have been programming in PHP much at all, you will be familiar with the $_GET and $_POST variables that can be passed to your scripts. You may not be as familiar with the $_SERVER...
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Add a Form to Take Payments with Gravity Forms: Allowing User Defined Fields...
I wanted to add a form to take payments to my payment page. I decided to user Gravity Forms. I am pleased with the result. I wanted my form to take either a payment amount that I set or to allow the...
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JavaScript Variables: Initialization, Booleans, and Numbers
Uninitialized variables show as a type of undefined. So do variables that haven't been declared at all. We should always initialize variables so that we know that undefined means we haven't declared...
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