I am studying Javascript and I am at this simple code:Link, I understand this code but the only thing that I don’t understand is the return false. I tried return true, and even I deleted the return line, and looked at FireFox, Chrome, and IE, and three of them didn’t look like something happened s…
Author: admin@master
Set undefined javascript property before read
var tr={}; tr.SomeThing=’SomeThingElse’; console.log(tr.SomeThing); // SomeThingElse console.log(tr.Other); // undefined tr.get=function(what){ if (tr.hasOwnProperty(what)) return tr[what]; …
Copy prototype for inheritance?
I was playing around with JavaScript in particular simulating object oriented programming with classes and whatnot. I knew about this way of achieving inheritance But I wasn’t satisfied, I didn’t like how I needed to call the constructor of AnotherClass. So I was playing around and I came up with …
Why does an anonymous function get called, whereas a named function doesn’t?
I’m creating a CoffeeScript application that overlays a webcam video with a canvas element (this is just for context and doesn’t seem to relate to my problem though). To get the proper canvas size to overlay on the video, I attach an event handler function to the loadedmetadata event like this: Th…
Use document.write() to write the result in a separate page
I am writing an html code into javascript using document.write(). But the result came in the same page, I want to display the result in a separate page. So this table is being displayed in the webpage, I want this result to be displayed in another webpage. Answer Try this
Change :hover CSS properties with JavaScript
How can JavaScript change CSS :hover properties? For example: HTML CSS How can the td :hover properties be modified to, say, background:#00ff00, with JavaScript? I know I could access the style background property using JavaScript with: But I don’t know of a .style JavaScript equivalent for :hover. Answ…
How to get text of an input text box during onKeyPress?
I am trying to get the text in a text box as the user types in it (jsfiddle playground): The code runs without errors, except that the value of the input text box, during onKeyPress is always the value before the change: Question: How do I get the text of a text box during onKeyPress? Bonus Chatter There ar…
how to set image for buttons and hover effect for images
How to set image for button and hover effect for prev and next button images? I do not know how to set image for button, and hover effect for prev and next button images. I need image opacity 0.1 also image button hover disabled,on disabled condition.and image opacity 0.5 on enabled condition also hover effec…
Does HTML5 localStorage maximum size include key names?
HTML5’s localStorage WebStorage has a maximum size of 5MB. Does this include the key names? For instance, if I were to use key names “quite-a-long-key-name-and-this-is-only-1” instead of “key1”, would I run out of space sooner? On a slightly related topic; is there any de-facto c…
Javascript: Detect checked boxes isn’t working with form with only 1 checkbox. Working with 2 or more
I have the function below. It gets the values from checked boxes and transfer it to a textbox. It is working… but only if the form has 2 or more checkboxes. Am I missing something to make this work with only 1 checkbox? Answer When there is one item. it does not return array