The new operator should be followed by a constructor function Here are some examples: new Object(); var accountNumbers = new Array( 5 ); var firstName = new
In JavaScript, this is facilitated by the fact that functions are First-Class Functions In the above example, the Higher-Order function is the
Array keys from of fill forEach map et Vue js (voir https:// vuejs org/v2/guide/typescript html) qui int`egrent un support TypeScript
var map = function () { var content = this content toLowerCase() split(/[\s,- ;?_:*]+/); // tokenization using js String split() with a regex
Il existe de nombreux types dérivés (héritant) de Object : ▻ Boolean, Number, String et Symbol ▻ Array, Map et Set ▻ Function ▻ RegExp
JavaScript Cheat Sheet Types Number String Boolean null undefined Object Function typeof(expr) break apart string into an array of smaller strings
Objects in js are more like maps/dictionaries than Java objects ○ Again the The split method splits a string into an array of
Arrays in JavaScript are just objects with magic length property Objects function Point (x, y) { Map M0 this x = x; Map M1 x → M1:12 this y = y;
Arrays have integer indexes starting from 0 Thus the first element has index 0, the second element has index 1, and so on For example, to get the second