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Get the height and width of the browser viewport without scrollbars using jquery?
...
Don't use jQuery, just use javascript for correct result:
This includes scrollbar width/height:
var windowWidth = window.innerWidth;
var windowHeight = window.innerHeight;
alert('viewport width is: '+ windowWidth + ' and viewport height is:' + wi...
How to escape single quotes within single quoted strings
...d reopens the string.
I often whip up a "quotify" function in my Perl scripts to do this for me. The steps would be:
s/'/'\\''/g # Handle each embedded quote
$_ = qq['$_']; # Surround result with single quotes.
This pretty much takes care of all cases.
Life gets more fun when you introd...
Are there legitimate uses for JavaScript's “with” statement?
...s:
for (var i=0; i<3; ++i)
{
var num = i;
setTimeout(function() { alert(num); }, 10);
}
Because the for loop does not introduce a new scope, the same num - with a value of 2 - will be shared by all three functions.
A new scope: let and with
With the introduction of the let statement in ES6...
registerForRemoteNotificationTypes: is not supported in iOS 8.0 and later
...I have is the pre-release documentation: "Apps that use visible or audible alerts in conjunction with a local or push notification must register the types of alerts they employ." As to "why," I only have my interpretation: end-user convenience to not be bothered by messages, regardless of source.
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How do I resolve a HTTP 414 “Request URI too long” error?
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Here is a working example:
ajaxPOST.html:
<html>
<head>
<script type="text/javascript">
function ajaxPOSTTest() {
try {
// Opera 8.0+, Firefox, Safari
ajaxPOSTTestRequest = new XMLHttpRequest();
} catch (e) {
// Internet Ex...
get CSS rule's percentage value in jQuery
...ossible!
You must first hide() the parent element. This will prevent JavaScript from calculating pixels for the child element.
$('.parent').hide();
var width = $('.child').width();
$('.parent').show();
alert(width);
See my example.
Now... I wonder if I'm first to discover this hack:)
Update:
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JavaScript: filter() for Objects
...type
Object.prototype.extended = "I'm everywhere!";
// See the result
alert( {}.extended ); // "I'm everywhere!"
alert( [].extended ); // "I'm everywhere!"
alert( new Date().extended ); // "I'm everywhere!"
alert( 3..extended ); // "I'm everywhere!"
alert( true.exten...
Code for a simple JavaScript countdown timer?
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I wrote this script some time ago:
Usage:
var myCounter = new Countdown({
seconds:5, // number of seconds to count down
onUpdateStatus: function(sec){console.log(sec);}, // callback for each second
onCounterEnd: function(...
How to inspect Javascript Objects
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There are few methods :
1. typeof tells you which one of the 6 javascript types is the object.
2. instanceof tells you if the object is an instance of another object.
3. List properties with for(var k in obj)
4. Object.getOwnPropertyNames( anObjectToInspect )
5. Object.getPrototypeOf( ...
Get the first key name of a javascript object [duplicate]
Let's assume we have the following javascript object:
8 Answers
8
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