When a modal window, like the one used by alert(), appears in a browser, what happens to the execution of JavaScript code?
Understand the Problem
The question is asking about the behavior of JavaScript code execution when a modal window, such as an alert box, appears in a web browser. It tests the understanding of how JavaScript handles modal dialogs during execution.
Answer
JavaScript execution is paused until the alert is dismissed.
When a modal window, like alert(), appears in a browser, JavaScript execution is temporarily paused until the user interacts with the modal by dismissing it.
Answer for screen readers
When a modal window, like alert(), appears in a browser, JavaScript execution is temporarily paused until the user interacts with the modal by dismissing it.
More Information
Using alert(), prompt(), or confirm() will block other interactions on the page and halt script execution, which can disrupt the user experience in modern web applications.
Tips
A common mistake is assuming that JavaScript will continue executing in the background, but it is actually halted until the alert is dismissed.
Sources
- Window: alert() method - Web APIs - MDN Web Docs - Mozilla - developer.mozilla.org
- JavaScript's prompt, confirm and alert considered 'old-fashioned' - softwareengineering.stackexchange.com
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