targeting HTML, adding eventlistener , updating HTML / replacing HTML

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Wed Nov 10 2021 15:35:00 GMT+0000 (UTC)

let applyNowButton = document.querySelector("button");

//eventlistener - how to make button react to being clicked

applyNowButton.addEventListener("click");
variable.addEventListener("submit");


//updating or replacing html
function updateHeading(newHeading) {
        let h1 = document.querySelector("h1");
        h1.innerHTML = newHeading;
      }

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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>

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Get URL and URL Parts in JavaScript

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

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Add event listener to multiple buttons with the same class

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    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

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3 Ways To Detect Selenium Bots Using Javascript - CodingTutz

if (navigator.webdriver) {
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#javascript

Full Stack Developer

function full_stack_developer() {
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}

#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 #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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Mapping an Object

const object1 = {
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};

for (let [key, value] of Object.entries(object1)) {
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Save to MongoDB without Duplicates Using Mongoose

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

const exampleSchema = new Schema({
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});


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

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Copy Text to Clipboard with Line Breaks

function copyToClipboard(){

    var codeToBeCopied = document.getElementById('code-snippet').innerText;
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    parentElement.removeChild(emptyArea);
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    }

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jQuery.post() - AJAX for post requests

$.ajax({
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  dataType: dataType
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Detect click outside element (vanilla JavaScript) - Stack Overflow

var specifiedElement = document.getElementById(%27a%27);

//I%27m using "click" but it works with any event
document.addEventListener(%27click%27, function(event) {
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  if (!isClickInside) {
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  }
});

#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];

targeting HTML, adding eventlistener , updating HTML / replacing HTML

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