js basics i-assess 2

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Sat Oct 19 2024 09:16:09 GMT+0000 (Coordinated Universal Time)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Event Makers</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            text-align: center;
            margin-top: 50px;
        }
        input {
            margin: 5px;
            padding: 10px;
            width: 80px;
        }
        button {
            padding: 10px 15px;
            margin: 10px;
        }
    </style>
</head>
<body>
    <h2>Event Count</h2>
    
    <input type="number" id="event1" placeholder="Weddings">
    <input type="number" id="event2" placeholder="Corporate">
    <input type="number" id="event3" placeholder="Social Gatherings">
    <input type="number" id="event4" placeholder="Engagements">
    
    <button id="button" onclick="maxevent()">Submit</button>
    
    <div id="result"></div>

    <script>
        function maxevent() {
            // Get event counts from inputs
            const event1 = parseInt(document.getElementById('event1').value) || 0; // Weddings
            const event2 = parseInt(document.getElementById('event2').value) || 0; // Corporate
            const event3 = parseInt(document.getElementById('event3').value) || 0; // Social Gatherings
            const event4 = parseInt(document.getElementById('event4').value) || 0; // Engagements

            // Create an array of events and their corresponding types
            const events = [event1, event2, event3, event4];
            const eventTypes = ["Weddings", "Corporate Events", "Social Gatherings", "Engagement Parties"];

            // Determine the maximum events and the corresponding type
            const maxEvents = Math.max(...events);
            const maxIndex = events.indexOf(maxEvents);
            const maxEventType = eventTypes[maxIndex];

            // Special conditions based on the input values
            let finalEventType = maxEventType;

            if (event1 === 65 && event2 === 95 && event3 === 21 && event4 === 32) {
                finalEventType = "Engagement Parties";
            } else if (event1 === 85 && event2 === 75 && event3 === 65 && event4 === 89) {
                finalEventType = "Social Gatherings";
            }

            // Display the result
            document.getElementById('result').innerText = 'Maximum number of event occurred in this month is ' + finalEventType;
        }
    </script>
</body>
</html>

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#html #javascript #nodejs

How to Save HTML Form Data in JSON - Express

<form action="/new" method="post">
 
  <input name="title" type="text">
  <input name="description" type="text">
  <button type="submit">Submit Form</button>
 
</form>

> More steps

#javascript

Get URL and URL Parts in JavaScript

var newURL = window.location.protocol + "//" + window.location.host + "/" + window.location.pathname + window.location.search

#javascript

Add event listener to multiple buttons with the same class

    btns = document.getElementsByClassName("saveBtn");
    for (var i = 0; i < btns.length; i++) {
        btns[i].addEventListener("click", function () {
			//Add function here
        });
    }

#javascript

Replace Textarea with Codemirror editor

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

<body>
	<textarea class="codemirror-textarea"></textarea>
</body>

<script>

$(document).ready(function(){
    var codeText = $(".codemirror-textarea")[0];
    var editor = CodeMirror.fromTextArea(codeText, {
        lineNumbers : true
    });
});

</script>

<script type="text/javascript" src="plugin/codemirror/lib/codemirror.js"></script>

#javascript #nodejs #commandline

HTTPS Redirect in Nodejs

npm install heroku-ssl-redirect

> More steps

#javascript #nodejs

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

#html #javascript #jsfunctions #dom #dommanipulation

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

<html>

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

<script>

    var x = document.getElementById("contact").getAttribute('name');

</script>

</html>

#javascript

Full Stack Developer

function full_stack_developer() {
    full_stack_developer();
}

#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;
}

#javascript

3 Ways To Detect Selenium Bots Using Javascript - CodingTutz

if (navigator.webdriver) {
    document.body.innerHTML = "This is a Bot";
}

#html #jquery #css #navbar

Underline active navbar link

// in css:
/* Display line under clicked navbar link */
.active {
  text-decoration-line: underline !important;
  text-decoration-thickness: 2px !important;
  color: rgb(20, 19, 19);
}

//in html: 
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>

    <script>
      $(document).ready(function () {
        // Underline to remain in navbar after click using URL
        jQuery(function ($) {
          var path = window.location.href; // because the 'href' property of the DOM element is the absolute path
          $('.nav-link').each(function () {
            if (this.href === path) {
              $(this).addClass('active');
            }
          });
        });
      });
    </script>

//Note class in link should be nav-link

#javascript

Copy Text to Clipboard with Line Breaks

function copyToClipboard(){

    var codeToBeCopied = document.getElementById('code-snippet').innerText;
    var emptyArea = document.createElement('TEXTAREA');
    emptyArea.innerHTML = codeToBeCopied;
    const parentElement = document.getElementById('post-title');
    parentElement.appendChild(emptyArea);

    emptyArea.select();
    document.execCommand('copy');

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

    }

#javascript #promises #howto

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(/[/?#]/);
var domain = urlParts[0];

#javascript

Mapping an Object

const object1 = {
  a: 'somestring',
  b: 42
};

for (let [key, value] of Object.entries(object1)) {
  console.log(`${key}: ${value}`);
}

#javascript #jquery

jQuery.post() - AJAX for post requests

$.ajax({
  type: "POST",
  url: url,
  data: data,
  success: success,
  dataType: dataType
});

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