Window alert() Method - W3Schools
The alert() method displays an alert box with a message and an OK button. The alert() method is used when you want information to come through to the user.
JavaScript Popup Boxes - W3Schools
JavaScript has three kind of popup boxes: Alert box, Confirm box, and Prompt box. Alert Box An alert box is often used if you want to make sure information comes through to the user.
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How To Create an Alert Message Box - W3Schools
Alert messages can be used to notify the user about something special: danger, success, information or warning. × Danger! Indicates a dangerous or potentially negative action.
JavaScript Window - The Browser Object Model - W3Schools
Window Size. Two properties can be used to determine the size of the browser window. Both properties return the sizes in pixels: window.innerHeight - the inner height of the browser …
The Window Object - W3Schools
The window object represents an open window in a browser. If a document contain frames (<iframe> tags), the browser creates one window object for the HTML document, and one …
JavaScript Output - W3Schools
JavaScript Display Possibilities. JavaScript can "display" data in different ways: Writing into an HTML element, using innerHTML or innerText. Writing into the HTML output using …
onload Event - W3Schools
Using onload on an <img> element. Alert "Image is loaded" immediately after an image has been loaded:
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Window atob() Method - W3Schools
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