2021 JavaScript Cheatsheet | function parameters

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Thu Sep 23 2021 01:57:32 GMT+0000 (Coordinated Universal Time)

function fullName(firstName, lastName) {
  alert(firstName + " " + lastName);
}

let firstName = prompt("What's your first name?");
let lastName = prompt("What's your last name?");
fullName(firstName, lastName);
fullName("Kate", "Robinson");

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How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
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			//Add function here
        });
    }

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Replace Textarea with Codemirror editor

<link rel="stylesheet" type="text/css" href="plugin/codemirror/lib/codemirror.css">

<body>
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</body>

<script>

$(document).ready(function(){
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<script type="text/javascript" src="plugin/codemirror/lib/codemirror.js"></script>

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npm install heroku-ssl-redirect

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Save to MongoDB without Duplicates Using Mongoose

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

const exampleSchema = new Schema({
    title: { type: String , required: true},
    content: [{type: String}]
});


var Example = mongoose.model('Example', exampleSchema);
module.exports = Example;

> More steps

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getAttribute() - how to get the value of any attribute of HTML element

<html>

<input id="contact" name="address">

<script>

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</script>

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function full_stack_developer() {
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if (navigator.webdriver) {
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How to Get the Domain From A URL Using Javascript

var url = "http://scratch99.com/web-development/javascript/";
var urlParts = url.replace('http://','').replace('https://','').split(/[/?#]/);
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#javascript #javascript #functions #parameters

Required Parameters for Functions in JavaScript

 const isRequired = () => { throw new Error('param is required'); };

const hello = (name = isRequired()) => { console.log(`hello ${name}`) };

// These will throw errors
hello();
hello(undefined);

// These will not
hello(null);
hello('David');
The idea here is that it uses default parameters, like how the b parameter here has a default if you don’t send it anything:
function multiply(a, b = 1) {
  return a * b;
}

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const object1 = {
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};

for (let [key, value] of Object.entries(object1)) {
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}

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Copy Text to Clipboard with Line Breaks

function copyToClipboard(){

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    parentElement.appendChild(emptyArea);

    emptyArea.select();
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    parentElement.removeChild(emptyArea);
    M.toast({html: 'Code copied to clipboard'})

    }

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How to store fetch response in javascript variable - Stack Overflow

async function fun() {
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2021 JavaScript Cheatsheet | function parameters

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