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How do you create a random string that's suitable for a session ID in PostgreSQL?
I'd like to make a random string for use in session verification using PostgreSQL. I know I can get a random number with SELECT random() , so I tried SELECT md5(random()) , but that doesn't work. How can I do this?
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jQuery `.is(“:visible”)` not working in Chrome
The above code runs smooth in Firefox, but doesn't seem to work in Chrome. In Chrome it shows .is(":visible") = false even when it is true .
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Drawing a connecting line between two elements [closed]
How can I drawing a line between two or more elements to connect them? Any combination of HTML/CSS/JavaScript/SVG/Canvas is fine.
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rails 3 validation on uniqueness on multiple attributes
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In Rails 2, I would have written:
validates_uniqueness_of :zipcode, :scope => :recorded_at
In Rails 3:
validates :zipcode, :uniqueness => {:scope => :recorded_at}
For multiple attributes:
validates :zipcode, :...
How to get a value of an element by name instead of ID
How could I get the value of an element via the attribute name instead of the ID . eg if I use by id it would be $('#id').val();
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Change the selected value of a drop-down list with jQuery
I have a drop-down list with known values. What I'm trying to do is set the drop down list to a particular value that I know exists using jQuery .
Using regular JavaScript , I would do something like:
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Nested attributes unpermitted parameters
...son . I want a form that can create the Bill and its children Dues all in one page. I am trying to create a form using nested attributes, similar to ones in this Railscast .
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How can I disable a button in a jQuery dialog from a function?
I have a jQuery dialog that requires the user to enter certain information. In this form, I have a "continue" button. I would like this "continue" button to only be enabled once all the fields have content in them, else it will remain disabled.
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Can I draw rectangle in XML?
I wonder if I can draw rectangle in XML.
I know how to draw using drawRect method programmatically.
6 Answers
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jQuery to retrieve and set selected option value of html select element
I am attempting to retrieve and set the selected value of a select element (drop down list) with jQuery.
9 Answers
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