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How to check a not-defined variable in JavaScript
...hing(variable)
{
var undef;
if(variable === undef)
{
alert('Hey moron, define this bad boy.');
}
}
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“The file ”MyApp.app“ couldn't be opened because you don't have permission to view it” when running
... from the added library.
Then it is working fine without any permission alert.
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Is it possible to get the non-enumerable inherited property names of an object?
... {
props.push(name);
}
}
return props;
};
alert(instance.getInherited().join(","));
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HtmlSpecialChars equivalent in Javascript?
...nd a text node. Creating a text node with text ` <img src=bogus onerror=alert(1337)>` will just create a text node, not an img element.
– Tim Down
May 24 '15 at 10:25
...
How do I iterate through children elements of a div using jQuery?
...selector to children
$('#mydiv').children('input').each(function () {
alert(this.value); // "this" is the current element in the loop
});
You could also just use the immediate child selector:
$('#mydiv > input').each(function () { /* ... */ });
...
Get the index of the object inside an array, matching a condition
...",prop2:"qwe"},{prop1:"bnmb",prop2:"yutu"},{prop1:"zxvz",prop2:"qwrq"}]
alert(findIndexInData(data, 'prop2', "yutu")); // shows index of 1
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Android emulator shows nothing except black screen and adb devices shows “device offline”
...17, the graphics acceleration feature for the emulator is experimental; be alert for incompatibilities and errors when using this feature.
and
Start the AVD Manager and create a new AVD with the Target value of Android 4.0.3 (API Level 15), revision 3 or higher.
So Android 4.0.3 (API Level 1...
Javascript what is property in hasOwnProperty?
... var somevar1= new somevar();
if(somevar1.hasOwnProperty("name"))
{
alert(somevar1.hasOwnProperty("name"));// it will return true
}
}
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Best way to run scheduled tasks [closed]
... the page return results which then can be used to trigger Pingdom to send alert messages when something isn't right.
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How to calculate the number of days between two dates? [duplicate]
...inaly, in days :)
var timeDifferenceInDays = timeDifferenceInHours / 24;
alert(timeDifferenceInDays);
You can skip some steps in the code, I have written it so to make it easy to understand.
You'll find a running example here: http://jsfiddle.net/matKX/
...