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SecurityError: Blocked a frame with origin from accessing a cross-origin frame
I am loading an <iframe> in my HTML page and trying to access the elements within it using Javascript, but when I try to execute my code, I get the following error:
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How do I expire a PHP session after 30 minutes?
I need to keep a session alive for 30 minutes and then destroy it.
15 Answers
15
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When should I use nil and NULL in Objective-C?
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You can use nil about anywhere you can use null. The main difference is that you can send messages to nil, so you can use it in some places where null cant work.
In general, just use nil.
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Diagnosing Memory Leaks - Allowed memory size of # bytes exhausted
I've encountered the dreaded error-message, possibly through-painstaking effort, PHP has run out of memory:
13 Answers
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How do I select the parent form based on which submit button is clicked?
...ntical, just one hidden variable that's different). A user will only fill in one form, and I'd like to validate/etc all the forms with only one JS script.
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How do I add a class to a given element?
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If you're only targeting modern browsers:
Use element.classList.add to add a class:
element.classList.add("my-class");
And element.classList.remove to remove a class:
element.classList.remove("my-class");
If you need to support Internet Ex...
Change the mouse cursor on mouse over to anchor-like style
...ouse over a div the mouse cursor will be changed to the cursor like that in HTML anchor.
5 Answers
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Placing an image to the top right corner - CSS
...n the top-right corner of a div (the image is a "diagonal" ribbon) but keeping the current text contained in an internal div, like stuck to the top of it.
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Producing a new line in XSLT
I want to produce a newline for text output in XSLT. Any ideas?
12 Answers
12
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Looking for files NOT owned by someone
I'm looking to recursively look through directories to find files NOT owned by a particular user and I am not sure how to write this.
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