Xah Talk Show 2020-01-14 JavaScript warts, array problem

topics talked

Xah Keyboard Blog
JavaScript warts
JavaScript has tons of warts. the reason JavaScript sucks is because it was designed and implemented in 10 days. and it is a language designed for non programers, to add a little interactivity in a web page, in 1995. Brenda Eich.
array problem. there is no real array. instead, array is just a object, that is, key value pairs, that pretend to be a array.
JS: Understand JS Array
JS: List Properties
var. problems. its scope problem. because it is a function scope. JS: var Name Scope
var, hoisting problem. JS: var Declaration Order
var problem. declaring or not declaring var. • JS: var Declaration • JS: Global Variable
keyboard function problem. Hoisting problem.
JS: Function. Declaration vs Expression
the null problem. null is a literal, of the value type null. typeof null you get "object".
JS: null
the problem of equality operator. ==, ===
JS: true, false
the semicolon problem. JS: Semicolon
the with statement.
the problem of the keyword this
JS: “this” Binding
Never Use the Property named “constructor”
Never use the instanceof Operator
JS: instanceof (operator)