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Default argument values in JavaScript functions [duplicate]
...peof(a)==='undefined') a = 10;
if (typeof(b)==='undefined') b = 20;
alert("A: "+a+"\nB: "+b);
}
//testing
func();
func(80);
func(100,200);
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(Deep) copying an array using jQuery [duplicate]
...r is a copy, not a reference... so if you did this next...
bar.push('f');
alert('foo:' + foo.join(', '));
alert('bar:' + bar.join(', '));
you would now get:
foo:a, b, c, d, e
bar:a, b, c, d, e, f
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Detect Click into Iframe using JavaScript
...
The above script is used by me to detect clicks away from my site. Most advertising networks now serve banners in frames. If you click one and then quickly another one before you left on the first click, technically I want to know the ...
“Keep Me Logged In” - the best approach
...erable, Between common browser cookie-theft vulnerabilities and cross-site scripting attacks we must accept that cookies are not safe. To help improve security you must note that php setcookies has additional functionality such as
bool setcookie ( string $name [, string $value [, int $expire = ...
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...
jquery - return value using ajax result on success
... return data;
},
error: function() {
alert('Error occured');
}
});
}
Another possibility (which is effectively the same thing) is to call a function inside your success: callback that passes the data when it is available.
function isSession(select...
What is the JavaScript convention for no operation?
...on is:
none of your suggestions, instead do:
var a = 2;
if (a === 1)
alert(1)
// else do nothing!
then the code is easily understandable, readable and as much efficient as it can get.
Why make it more difficult, when it can be simple?
edit:
So then, does a "no-operation" command basica...
Is it possible to append to innerHTML without destroying descendants' event listeners?
...ning the text "foo". The handler is an anonymous function that pops up an alert() .
13 Answers
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AlertDialog.Builder with custom layout and EditText; cannot access view
I am trying to create an alert dialog with an EditText object. I need to set the initial text of the EditText programmatically. Here's what I have.
...
jquery find closest previous sibling with class
...
You can follow this code:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function () {
$(".add").on("click", function () {
var v = $(this).close...