dzcode.talk/JAVASCRIPT/learning/javascript-traversey/index.html at master · zed-dz/dzcode.talk · GitHub

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<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>vanilla js start</title>

  <style rel="stylesheet">
    body {
      text-align: center;
      font-family: arial;
      font-size: 1rem;
    }

    li {
      list-style: none;
      line-height: 2em;
      text-align: left;
    }

    .header {
      background: #f4f4f4;
      border-bottom: #ccc 3px solid;
      padding: 1.1rem;
    }

    .button {
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
    }

    .container {
      width: 700px;
      margin: 2rem auto;
    }
  </style>

</head>

<body onload="showdate()">

  <div class="header">
    <h1 id="heading"> learning js </h1>
    <p> With hammou kacem amine </p>
  </div>

  <div class="container">
    <!-- <button onclick="doclick()">Click Me</button> -->

    <!-- <button onclick="this.innerHTML='you clicked'">Click Me</button> -->

    <button onclick="changetext(this)">Click Me</button>

    <button onmouseout="cleardate()" onmouseover="showdate()">show date</button>

    <h1 id="time"></h1>

    <form action="" method="post" name="myForm" onsubmit="return validateForm()">

      <div>
        <label for="name">First Name</label>
        <input type="text" name="FirstName" id="FirstName">
      </div>
      <br>
      <div>
        <label for="lastname">LastName</label>
        <input type="text" name="LastName" id="LastName">
      </div>
      <br>
      <div>
        <label for="bg">background</label>
        <select name="background" id="background" onchange="changebg(this)">
          <option value="red">Red</option>
          <option value="blue">Blue</option>
          <option value="green">Green</option>
          <br>
          <input type="submit" value="Submit">
        </select>
      </div>

    </form>
  </div>


  <script>
    function validateForm() {
      var firstname = document.forms['myForm']['FirstName'].value;

      if (firstname == null || firstname == '' || firstname.length < 3) {
        alert('first name required');
        return false;
      }

    }


    function changebg(x) {
      console.log(x.value);
      var body = document.querySelector('body');
      body.style.backgroundColor = x.value;
    }

    function cleardate() {
      document.getElementById('time').innerHTML = '';
    }

    function showdate() {
      document.getElementById('time').innerHTML = Date();
    }

    function changetext() {
      var heading = document.getElementById('heading');
      heading.innerHTML = ' new fucking heading ';
    }
    //
    //     function changetext(id) {
    //       id.innerHTML = 'you clicked';
    //     }

    var colors = new Array('red', 'yellow');
    colors.push('purple');
    console.log(colors.length);
    // alert(colors.sort());
    // reverse() etc..
    for (var i = 0; i < 10; i++) {
      console.log(i);
    }
    colors.forEach((string) => {
      console.log(string);
    });

    //object literal
    var person = {
      firstname: 'amine',
      lastname: 'hammou',
      age: '24',
      children: ['ous', 'beasic'],
      street: {
        city: 'blida',
        province: 09,
        state: 'algeria'
      },
      fullname: function () {
        return this.children + " " + this.street.city;
      }
    }
    console.log(person.fullname());

    // var apple = new object();
    // apple.color = 'red';
    // apple.shape = 'round';

    // apple.describe = function(){
    // return 'an apple is the color '+this.color+' and is the shape '+this.shape;
    // }
    // console.log(apple.describe());

    //constructor pattern

    function fruit(name, color, shape) {
      this.name = name;
      this.color = color;
      this.shape = shape;

      this.describe = () => {
        return this.name + ' ' + this.color + ' ' + this.shape;
      }

    }

    var apple = new fruit('apple', 'red', 'round');
    console.log(apple);

    var melon = new fruit('melon', 'brown', 'rectangle');
    console.log(melon.describe());


    var users = [{
        name: 'amine hammou',
        age: 20
      },
      {
        name: 'popo hammou',
        age: 50
      },
      {
        name: 'cisco hammou',
        age: 2
      }
    ];
    console.log(users[0].name);

    // events
    // function doclick() {
    //   alert('you are an asshole');
    // }
  </script>
</body>

</html>