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Is using 'var' to declare variables optional? [duplicate]
...he differences:
external = 5;
function firsttry() {
var external = 6;
alert("first Try: " + external);
}
function secondtry() {
external = 7;
alert("second Try: " + external);
}
alert(external); // Prints 5
firsttry(); // Prints 6
alert(external); // Prints 5
secondtry(); // Prints 7
aler...
JSHint and jQuery: '$' is not defined
...the passed in window object declaration gets minified as well. e.g. window.alert() become m.alert().
Code inside the self-executing anonymous function only uses 1 instance of the window object.
You cut to the chase when calling in a window property or method, preventing expensive traversal of the sc...
How to add a touch event to a UIView?
...l.text = "Long press recognized"
// example task: show an alert
if gesture.state == UIGestureRecognizerState.began {
let alert = UIAlertController(title: "Long Press", message: "Can I help you?", preferredStyle: UIAlertControllerStyle.alert)
alert.add...
How should I pass multiple parameters to an ASP.Net Web API GET?
...) {
$.each(data, function (index, v) {
alert(index + ': ' + v.name);
});
},
statusCode: {
404: function () {
alert('Failed');
}
}
});
I hope this helps...
jQuery returning “parsererror” for ajax request
...ether a valid JSON is being returned or not, and if JSON validation fails, alert it on the screen so that its obvious for what purpose the ajax call is actually failing. Have a look at this:
$.ajax({
url: '/Admin/Ajax/GetViewContentNames',
type: 'POST',
dataType: 'text',
data: {view...
HTML: How to limit file upload to be only images?
...r reader = new FileReader();
if(this.files[0].size>528385){
alert("Image Size should not be greater than 500Kb");
$("#menu_image").attr("src","blank");
$("#menu_image").hide();
$('#menu_images').wrap('<form>').closest('form').get(0).reset();
$('...
iOS Detection of Screenshot?
.... You can remove the image in this delegate method and show an appropriate alert to the user.
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
{
[super touchesCancelled:touches withEvent:event];
NSLog(@"Touches cancelled");
[self.imageView removeFromSuperView]; //a...
What are the best use cases for Akka framework [closed]
...ith meta data (category, label, tags, etc) and provide services (email/sms alerts, fraud detection, low funds balance, etc).
Based on the input type we compose classes of various traits (called mixins) necessary to handle the job and then perform the work. All of these jobs come into the same queue...
Serving gzipped CSS and JavaScript from Amazon CloudFront via S3
...yles.href = sr_css_file;
head.appendChild(scriptStyles);
//alert('adding css to header:'+sr_css_file);
}
}());
</script>
gzipcheck.js.jgz is just sr_gzipEnabled = true; This tests to make sure the browser can handle the gzipped code and provide a backup if they can't.
...
Get the first key name of a javascript object [duplicate]
...
Try this:
for (var firstKey in ahash) break;
alert(firstKey); // 'one'
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