Xah Web Dev Blog 2017-01
Array.prototype.find (new in ES2015)
Array.prototype.fill (new in ES2015)
Function.prototype (updated for ES2015)
Array How-To (updated)
Math. Updated for ES2015. Added 15 new functions.
Firefox, a Dying Breed
String is 16 Bits Unit Sequence (expanded)
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
String Constructor (new page)
- the Set Object Tutorial
- Set Union, Intersection, Difference
- Set Object
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]