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Checking if object is empty, works with ng-show but not from controller?
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Or you could keep it simple by doing something like this:
alert(angular.equals({}, $scope.items));
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Check if image exists on server using JavaScript?
...nerror = bad;
img.src = imageSrc;
}
checkImage("foo.gif", function(){ alert("good"); }, function(){ alert("bad"); } );
JSFiddle
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Use dynamic (variable) string as regex pattern in JavaScript
...this is #abc# some #abc# stuff.";
var output = input.replace(regex, "!!");
alert(output); // Hello this is !! some !! stuff.
JSFiddle demo here.
In the general case, escape the string before using as regex:
Not every string is a valid regex, though: there are some speciall characters, like ( or [....
How do I merge two javascript objects together in ES6+?
... b = {age: {value: 37, writeable: true}};
Object.defineProperties(a, b);
alert(a.age); // 37
MDN documentation: https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Object/defineProperties
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Can I make a function available in every controller in angular?
...unction() {
return {
foo: function() {
alert("I'm foo!");
}
};
});
myApp.controller('MainCtrl', ['$scope', 'myService', function($scope, myService) {
$scope.callFoo = function() {
myService.foo();
}
}]);...
Making the iPhone vibrate
...nctions that take a parameter kSystemSoundID_Vibrate:
1) AudioServicesPlayAlertSound(kSystemSoundID_Vibrate);
2) AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
Both of the functions vibrate the iPhone. But, when you use the first
function on devices that don’t support vibration, it ...
How can I strip HTML tags from a string in ASP.NET?
...ooSerious this will allow a XSS vector in however &gt; script &lt; alert("XXS"); &gt; / script &lt; Will not be sanitized by the regex but converted by HtmlDecode to <script>alert("XXS");</ script>
– user70568
Mar 14 '17 at 11:44
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Javascript swap array elements
...= [1, 2, 3, 4, 5, 6, 7, 8, 9], x= 0, y= 1;
A[x] = A.splice(y, 1, A[x])[0];
alert(A); // alerts "2,1,3,4,5,6,7,8,9"
Edit:
The [0] is necessary at the end of the expression as Array.splice() returns an array, and in this situation we require the single element in the returned array.
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Intel SMID指令集编译错误: inlining failed in call to always_inline \'x...
...mismatch xxxintel_smid_compile_error最近在使用CPU指令集优化代码的时候，编译出错，报错如下： usr lib64 gcc x86_64-suse-linux 7 include avx2intrin h:252:1: error: inlining failed in call to always_i 最近在使用CPU指令集优化代码的时候，编译出错，报错如...
How can I bind to the change event of a textarea in jQuery?
... oldVal = currentVal;
//action to be performed on textarea changed
alert("changed!");
});
jsFiddle Demo
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