javascript - data needed

Currently, I am diving into practicing javascript coding on CodeAcademy. While testing out my code in Codeacademy, I rely on console.log to display strings to the built-in browser within the platform. Everything runs smoothly there. The challenge arises when I test the exact same piece of code in Dreamweaver text editor and try to output it to the browser - it shows nothing until I switch to using document.write.

Subsequently, I came across information stating that utilizing document.write in production code is not advisable! Could someone shed some light on this?

Moreover, during a recent JS free meeting I attended, it was emphasized that incorporating something like prompt("La di da"); is also discouraged in professional projects.

If anyone is willing to spare some time and knowledge to explain why these features are included in JS but not recommended for use, or why they malfunction when implemented, I would greatly appreciate it.

javascript

Answer №1

  1. In their web application, Code Academy will create a simulated console. By pressing "F12" in most browsers, users can access the "Developer Tools," which include a built-in console where output from console.* calls like console.log() is displayed. Code Academy will have its own JavaScript to capture and display these calls for user convenience.

    However, Dreamweaver does not provide this feature, explaining why it may not be visible to you.

  2. Using document.write is not inherently wrong. However, its behavior changes based on whether the page has loaded or not. There are more user-friendly alternatives like document.getElementById() for specifying the output location.

    For further information, refer to Why is document.write considered a "bad practice"?

  3. Just like document.write, using functions like prompt() and confirm() is not problematic; even Stack Overflow utilizes confirm() on their websites. The drawback is that they lack customization options, and functionalities like prompt() only allow one input at a time.

    On the other hand, modal windows (such as jQuery UI dialog, Bootstraps "Model", or different lightbox plugins) offer styling capabilities.

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