Javascript Kata

Memorize each code block cold.

let a = "a";
var n = 1;
let m = n + 1;
var l;
var code = "code";
var test = 1 === 1; // !==, >, >=, <, < =
var ans = m <= 2 && n === 1 || code === "code"
var abcd = [a, "b", "c", "d"];

abstract, alert, as

boolean, break, byte

case, catch, char, class, continue, const

debugger, default, delete, do, double

else, enum, export, extends

false, finally, float, for, function

goto

if, implements, import, in, instanceof, int, interface, is

long

namespace, native, new, null

package, private, protected, public

return

short, static, super, switch, synchronized

this, throws, transient, true, try, typeof

use

var, void, volatile

while, with

m = n+n;
var l = n++         //use then increment

    l = ++n         //increment then use

"l = " + l +"."

var question = "What is your name?"
var defaultAnswer = "Vikid"
var name = prompt(question, defaultAnswer)

var test = 1 === 1; // !==, >, >=, <, < =

if (!test) {
  code+" if";
}
else if(!test) {
  code+" if else";
}
else{
 code+" else";
}

abcd[0] = "A";
abcd.pop();
abcd.push("e", "f");
abcd.shift();
abcd.unshift("yy" "zz");
abcd.splice(1,0, "__");
abcd.splice(0,2)

let o  = new Object();
let oo = {}

let key = "height"
let user = {name: "vikid", age: "44", "my nickname": "vkt", [key + " (inches)"]: 171};

user.isCool = true;
delete user.isCool;

function Person(name, age) {
  return {name, age};
};

"name" in user;
for (key in user) {
  console.log(key);
}

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11apr23

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