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

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

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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 Function 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