Tips to Become a Better JavaScript Developer

Post by pkorzeniewski » Fri, Aug 22, 2014, 3:39 PM UTC

Bahamut wrote: post #23

enraged_camel wrote: post #14

Earlier quoted context omitted.

The actual quote was: >>What I’m saying is don’t rely heavily on jQuery, or any other library, without having some sort of understanding of how that library is accomplishing it’s tasks. Which I think is fair. (However, I don't agree with his assertion that using vanilla JS will be more efficient - in most cases, it won't.)

Vanilla JS is more efficient than jQuery a lot of the time - for example, consider the $(...) api - this has to do string parsing before it makes its selector call, which by its very nature take away computing power. These days it is negligible though. The argument for using jQuery for DOM manipulation is oftentimes just one of readability.

Post by n0body » Fri, Aug 22, 2014, 3:57 PM UTC

dmak wrote: post #36

n0body wrote: post #26

only needs one point, "only use javascript when you have to, it's a terrible language and best avoided"

Why do you think its terrible?

  (function() {
    var x = 1;
    console.log( x );
    if ( x ) {
      var y = 2;
    }
  
    console.log( y );
  })()

Post by nhenezi » Fri, Aug 22, 2014, 8:04 PM UTC

n0body wrote: post #43

dmak wrote: post #36

Earlier quoted context omitted.

Why do you think its terrible?

the + operator, is it concatting strings, or adding? who knows. the scoping sucks, e.g. (function() { var x = 1; console.log( x ); if ( x ) { var y = 2; } console.log( y ); })() why is y defined? its being called out of the block it was declared in? there's no proper foreach using other files is an effort and requires hacks to get them loaded. callbacks everywhere. variable names as object keys is a pain regex is a p…

  (function() {
    var x, y;
    x = 1;
    console.log( x );
    if ( x ) {
      y = 2;
    }
  
    console.log( y );
  })()