I think a little history lesson is due. JavaScript was originally named Mocha and changed to Livescript but ultimately became JavaScript. It’s important to note that JavaScript came before ECMAscript and the history will tell you why. To start from the beginning, JavaScript derived its name from Java and initially Brendan Eich (the creator of … Read more
You are just using The Comma Operator. This operator only evaluates its operands from left to right, and returns the value from the second one, for example: (0, 1); // 1 (‘foo’, ‘bar’); // ‘bar’ In the context of calling a function, the evaluation of the operand will simply get a value, not a reference, … Read more
Early versions of JavaScript did not allow named function expressions, and because of that we could not make a recursive function expression: // This snippet will work: function factorial(n) { return (!(n>1))? 1 : factorial(n-1)*n; } [1,2,3,4,5].map(factorial); // But this snippet will not: [1,2,3,4,5].map(function(n) { return (!(n>1))? 1 : /* what goes here? */ (n-1)*n; … Read more