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Why does Oracle 9i treat an empty string as NULL?
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Oracle documentation alerts developers to this problem, going back at least as far as version 7.
Oracle chose to represent NULLS by the "impossible value" technique. For example, a NULL in a numeric location will be stored as "minus zero", an...
How can I get WebStorm to recognize Jasmine methods?
...m/Idea
Open File > Settings...
Select Languages & Frameworks > JavaScript > Libraries
Click on Download...
Swich to TypeScript community stubs
Find karma-jasmine (originally under the name jasmine) (If this does not work, try jasmine instead)
Click on Download and Install
I a...
How do I refresh the page in ASP.NET? (Let it reload itself by code)
...rendered to the client you have only two ways of forcing a refresh.
One is Javascript
setTimeout("location.reload(true);", timeout);
The second is a Meta tag:
<meta http-equiv="refresh" content="600">
You can set the refresh intervals on the server side.
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Getting a list of associative array keys
I have an associative array in JavaScript:
6 Answers
6
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Is there an “exists” function for jQuery?
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In JavaScript, everything is 'truthy' or 'falsy', and for numbers 0 means false, everything else true. So you could write:
if ($(selector).length)
You don't need that >0 part.
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Opening the Settings app from another app
...d then started the app, which asked me for location permission and then my alert popup was there to send me on settings -> location services page --> Enabled --> That's it!!
![NOTICE:
Your app might be rejected ... even if it's approved it can be rejected in future version if you use this ...
Difference between toFixed() and toPrecision()?
I'm new to JavaScript and just discovered toFixed() and toPrecision() to round numbers. However, I can't figure out what the difference between the two is.
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What is an AngularJS directive?
...rds it's a template in which you use mix of any arbitrary nodes and pseudo-javascript and placeholders for data to express intentions of how your widget (component) is structured, how it behaves and how it is feed with data.
Angularjs then runs against those directives to translate them into workin...
How can I change an element's text without changing its child elements?
... better solution using jQuery, but you might be able to do this in regular JavaScript too.
In Javascript, the childNodes property gives you all the child nodes of an element, including text nodes.
So, if you knew the text you wanted to change was always going to be the first thing in the element, ...
How to execute mongo commands through shell scripts?
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@Matt -- Note that the non-JavaScript commands that the shell provides are not available in an executed JavaScript file, so use dbName and show dbs will work from the shell's internal prompt but not from inside a .js file. There are JavaScript equival...