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HTML5 LocalStorage: Checking if a key exists [duplicate]
...' work too with if(typeof(localStorage.getItem("username"))===null){ alert('no') };
– Gabriel
Apr 15 '13 at 8:42
...
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.
...
How to pass parameters in $ajax POST?
...orm-urlencoded; charset=UTF-8',
success: function (response) {
alert(response.status);
},
error: function () {
alert("error");
}
});
In this case the param method formats the data to:
field1=hello&field2=hello2
The Jquery.ajax documentation says that there...
Find out whether radio button is checked with JQuery?
...('#element').click(function() {
if($('#radio_button').is(':checked')) { alert("it's checked"); }
});
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Do something if screen width is less than 960 px
... screen width is less than 960 pixels? The code below always fires the 2nd alert, regardless of my window size:
10 Answers...
jQuery counting elements by class - what is the best way to implement this?
...avascript">
$(document).ready(function() {
alert( $(".red").length );
});
</script>
</head>
<body>
<p class="red">Test</p>
<p class="red">Test</p>
<p class="red anotherc...
How to obtain the query string from the current URL with JavaScript?
... url = window.location.search;
url = url.replace("?", ''); // remove the ?
alert(url); //alerts ProjectID=462 is your case
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How do I check if an array includes a value in JavaScript?
... }
}
return false;
}
And now you can simply use the following:
alert([1, 2, 3].contains(2)); // => true
alert([1, 2, 3].contains('2')); // => false
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CSS3 transition events
...d.
box.addEventListener( 'webkitTransitionEnd',
function( event ) { alert( "Finished transition!" ); }, false );
Mozilla
There is a single event that is fired when transitions complete. In Firefox, the event is transitionend, in Opera, oTransitionEnd, and in WebKit it is webkitTransitio...
Difference between .on('click') vs .click()
...ew</button>
<div id="container">
<button class="alert">alert!</button>
</div>
</html>
where we add new buttons via
$("button#add").click(function() {
var html = "<button class='alert'>Alert!</button>";
$("button.alert:last")....