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“var” or no “var” in JavaScript's “for-in” loop?
... following.
function f (){
for (i=0; i<5; i++);
}
var i = 2;
f ();
alert (i); //i == 5. i should be 2
If you write var i in the for loop the alert shows 2.
JavaScript Scoping and Hoisting
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How do I declare a namespace in JavaScript?
How do I create a namespace in JavaScript so that my objects and functions aren't overwritten by other same-named objects and functions? I've used the following:
...
How to get the class of the clicked element?
...ps.
$("li").click(function() {
var myClass = $(this).attr("class");
alert(myClass);
});
Equally, you don't have to wrap the object in jQuery:
$("li").click(function() {
var myClass = this.className;
alert(myClass);
});
And in newer browsers you can get the full list of class names:...
SecurityError: Blocked a frame with origin from accessing a cross-origin frame
...gt; in my HTML page and trying to access the elements within it using Javascript, but when I try to execute my code, I get the following error:
...
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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How to implement a custom AlertDialog View
In the Android docs on AlertDialog , it gives the following instruction and example for setting a custom view in an AlertDialog:
...
Alternative to iFrames with HTML5
...ing the size of the frame to its content is tough, insanely frustrating to script into/out of, nearly impossible to style).
AJAX. As the solutions shown here prove, you can use the XMLHttpRequest object to retrieve data and inject it to your page. It is not ideal because it depends on scripting tech...
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...
Detect all Firefox versions in JS
How to detect Firefox in JavaScript?
I want to detect all versions of Firefox.
7 Answers
...
Access-Control-Allow-Origin error sending a jQuery Post to Google API's
...',
crossDomain: true,
dataType: 'jsonp',
success: function() { alert("Success"); },
error: function() { alert('Failed!'); },
beforeSend: setHeader
});
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