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How to calculate number of days between two dates
...Try this Using moment.js (Its quite easy to compute date operations in javascript)
firstDate.diff(secondDate, 'days', false);// true|false for fraction value
Result will give you number of days in integer.
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javascript check for not null
...
this will do the trick for you
if (!!val) {
alert("this is not null")
} else {
alert("this is null")
}
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follo...
How do I get the YouTube video ID from a URL?
I want to get the v=id from YouTube’s URL with JavaScript (no jQuery, pure JavaScript).
39 Answers
...
How to check if a variable is an integer in JavaScript?
How do I check if a variable is an integer in JavaScript, and throw an alert if it isn't? I tried this, but it doesn't work:
...
Catch checked change event of a checkbox
... />
$("#something").click( function(){
if( $(this).is(':checked') ) alert("checked");
});
Edit: Doing this will not catch when the checkbox changes for other reasons than a click, like using the keyboard. To avoid this problem, listen to changeinstead of click.
For checking/unchecking prog...
Is it possible to clone html element objects in JavaScript / JQuery?
...div>
Here is the javascript:
$("#foo2").click(function() {
//alert("clicked");
var value=$(this).html();
$("#foo1").html(value);
});
Here is the jsfiddle: http://jsfiddle.net/fritzdenim/DhCjf/
shar...
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...
android webview geolocation
...lse);
// final boolean remember = false;
// AlertDialog.Builder builder = new AlertDialog.Builder(WebViewActivity.this);
// builder.setTitle("Locations");
// builder.setMessage("Would like to use your Current Location ")
// ...
Check if object exists in JavaScript
... returns a string.
Therefore
if (typeof maybeObject != "undefined") {
alert("GOT THERE");
}
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How do I split a string into an array of characters? [duplicate]
...cter in the array as you would any other array.
var s = "overpopulation";
alert(s[0]) // alerts o.
UPDATE
As is pointed out in the comments below, the above method for accessing a character in a string is part of ECMAScript 5 which certain browsers may not conform to.
An alternative method you ...