AyoAlfonso

Rails Migration

http://guides.rubyonrails.org/migrations.html

Migrations methods:

• add_column
• add_index
• change_column
• change_table
• create_table
• drop_table

AyoAlfonso

function getLegitTextNodes() {
  if (!document.createTreeWalker) return [];
  
  var blacklist = ['SCRIPT', 'OPTION', 'TEXTAREA'],
      textNodes = [],
      walker = document.createTreeWalker(
        document.body,
        NodeFilter.SHOW_TEXT,
        function excludeBlacklistedNodes(node) {
          if (blacklist.indexOf(node.parentElement.nodeName.toUpperCase()) >= 0) return NodeFilter.FILTER_REJECT;

AyoAlfonso

import React, { useState, useEffect } from "react";
import axios from "axios";

const Test = () => {
  const [data, setData] = useState([]);
  const [land, setLand] = useState("");
  const [pop, setPop] = useState({
    country: "",
    population: "",
    year: "",

AyoAlfonso

Vanilla JavaScript Quick Reference / Cheatsheet

Just migrated it from Codepen.io to markdown. Credit goes to David Conner.

Working with DOM	Working with JS	Working With Functions
Accessing Dom Elements	Add/Remove Array Item	Add Default Arguments to Function
Grab Children/Parent Node(s)	Add/Remove Object Properties	Throttle/Debounce Functions
Create DOM Elements	Conditionals