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React News Tuesday, March 13 Tip, Console log, Pagedraw & more…

React News TLDR / Table of Contents

  • ; //log a message or an object to happened…); //same as console log – console.warn(Something strange happened…); //same as console log but outputs a horrible happened…); //same as console log but outputs an error – So hopefully now, I can give you some tips which you didnt know before, and…
  • Tip #2 console.time() console.timeEnd() – If you are trying to find a sneaky performance issue, start counting time with console.time() and print with console.timeEnd().
  • Tip #7 console.group(group) writing so many logs, you might want to organize them.
  • Tip #9 console.clear() – Well, having written so many logs, its now time to clear your console a little.
  • You can actually print a very nice table with the objects you log using the console.table() – I really hope these tips make your debugging a bit more productive, and even a little fun!

Tags: Tip, console log, good old console, sneaky memory leak, sneaky performance issue

  • Pagedraw is a UI builder that turns mockups into React code.
  • Pagedraw lets you annotate mockups with extra information (like how to connect to the backend, resize for different screens, etc.) to get full, presentational, React Components.
  • In one corner are tools like Dreamweaver, which can produce correct code but have to expose some of the underlying HTML model, making their users play a puzzle game to do something as simple as move an object around.
  • In the other corner are freeform design tools that generate position:absolute code.
  • Past tools never fully worked because they tried to unify two fundamentally different mental models: the designers mental model of a free form canvas like Sketch or Photoshop, and the DOMs mental model of
    followed by a

    followed by an and so on.

Tags: pagedraw, react, code, app, React Native

  • In Dynamically Add Props To A Child Component, I talked about how a child element can be reconstituted with additional props.
  • The approach I showed will only work in the case of a single child being nested in that component.
  • What if you want your component to account for one, many, or even children?
  • React comes with a built-in function for mapping that handles these cases.
  • The function allows mapping over one or many elements and if is or , it will return or respectively.

Tags: Google Chrome, latest Safari, additional props, built-in function, child element

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