Xah Web Dev Blog 2017-01
JS: Array.prototype.find (new in ES2015)
JS: Array.prototype.fill (new in ES2015)
JS: Function.prototype (updated for ES2015)
JS: Array How-To (updated)
JS: Math. Updated for ES2015. Added 15 new functions.
Firefox, a Dying Breed
JS: String is 16 Bits Unit Sequence (expanded)
JS: Check Property Existence (updated for ES2015)
For example, for
String.prototype, it doesn't list
length as one of its property, but it is listed as a property in a separate section of “string instance”.
see ECMAScript 2015 §Text Processing#sec-properties-of-string-instances-length
however, in code, if you list properties of String.prototype,
"length" is there.
console.log ( String.prototype.hasOwnProperty ( "length" ) ); // true console.log ( Reflect.ownKeys ( String.prototype ) ); // has length
JS: String Constructor (new page)
- JS: the Set Object Tutorial
- JS: Set Union, Intersection, Difference
- JS: Set Object
- JS: Set.prototype
- JS: Set.prototype.forEach
JS: Iterable (new)
JS: Interface (new)
one of the most annoying thing about css is that there's no way to control size of font across browsers, unless you download web font.
[see Meaning of Font Size]