How to calculate the number of days between two dates in JavaScript ? Log a message when the page is fully loaded: The same, but using the onload event handler property: BCD tables only load in the browser with JavaScript enabled. How to check whether an image is loaded or not ? Where does this (supposedly) Gibson quote come from? So alert shows zero sizes. The special target keywords, _self, _blank, _parent, and _top, can also be used. It will run the function as soon as the webpage has been loaded. The behavior was changed, because some webmasters abused this event handler by showing misleading and annoying messages. What am I doing wrong here in the PlotLegends specification? The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. How to append HTML code to a div using JavaScript ? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. How to see the extensions loaded by PHP ? Theoretically Correct vs Practical Notation. Use window.onload function: It is used to perform the task as soon as the page refresh or loading. Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2. Unlike images, the web browser starts downloading JavaScript files only after the src property has been assigned and the