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Finding Variable Type in JavaScript
...ascript you can do that by using the typeof function
function foo(bar){
alert(typeof(bar));
}
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Which method performs better: .Any() vs .Count() > 0?
...ter than Any().
When you run Table.Any(), it will generate something like(alert: don't hurt the brain trying to understand it)
SELECT
CASE WHEN ( EXISTS (SELECT
1 AS [C1]
FROM [Table] AS [Extent1]
)) THEN cast(1 as bit) WHEN ( NOT EXISTS (SELECT
1 AS [C1]
FROM [Table] AS [Exten...
Wildcards in jQuery selectors
...ick(
function(event) {
// Do something with the id # here:
alert('Picked: '+ event.target.id.slice(5));
}
);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="pick_1">moo1</div>
<div id="pick_2">mo...
Stop and Start a service via batch or cmd file?
...they have succeeded or failed pretty clearly. For example
U:\>net stop alerter
The Alerter service is not started.
More help is available by typing NET HELPMSG 3521.
If running from a batch file, you have access to the ERRORLEVEL of the return code. 0 indicates success. Anything higher indica...
Limit file format when using ?
...
case 'jpg':
case 'bmp':
case 'png':
case 'tif':
alert('Allowed');
break;
default:
alert('Not allowed');
this.value = '';
}
};
<input type="file" id="someId" />
JSFiddle
...
Are there constants in JavaScript?
...turn {
get: function(name) { return private[name]; }
};
})();
alert('MY_CONST: ' + CONFIG.get('MY_CONST')); // 1
CONFIG.MY_CONST = '2';
alert('MY_CONST: ' + CONFIG.get('MY_CONST')); // 1
CONFIG.private.MY_CONST = '2'; // error
alert('MY_CONST: ' + CONFIG.get('MY_CONS...
RGB to hex and hex to RGB
...urn "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
}
alert(rgbToHex(0, 51, 255)); // #0033ff
Converting the other way:
function hexToRgb(hex) {
var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16...
How to find the array index with a value?
...ar index = functiontofindIndexByKeyValue(studentsArray, "name", "tanmay");
alert(index);
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Presenting a UIAlertController properly on an iPad using iOS 8
With iOS 8.0, Apple introduced UIAlertController to replace UIActionSheet . Unfortunately, Apple didn't add any information on how to present it. I found an entry about it on hayaGeek's blog, however, it doesn't seem to work on iPad. The view is totally misplaced:
...
How to close current tab in a browser window?
...osing other tabs in the browser. When the user clicks the close link, an alert message should appear asking the user to confirm with two buttons, "YES" and "NO". If the user clicks "YES", close that page and If "NO", do nothing.
...