codeup-web-exercises/dom-query-js.html at main · Khector90/codeup-web-exercises · GitHub

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<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>DOM: Query and Modify</title>
</head>
<body>

<h1 id="main-header">Hello World!</h1>
<button id="btn1">You must click it</button>
<button id="btn2">Click it good</button>
<button id="btn3">Click it again</button>
<button id="btn4">And again</button>
<ul>
  <li data-dbid="1">Item 1</li>
  <li data-dbid="2">Item 2</li>
  <li data-dbid="3">Item 3</li>
  <li data-dbid="4">Item 4</li>
  <li data-dbid="5">Item 5</li>
</ul>
<h2 id="sub-header">Hello Again.</h2>
<p class="sub-paragraph">
  Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
  eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim
  ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut
  aliquip ex ea commodo consequat. Duis aute irure dolor in
  reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla
  pariatur. Excepteur sint occaecat cupidatat non proident, sunt in
  culpa qui officia deserunt mollit anim id est laborum.
</p>

<script>
  (function() {
    "use strict";
    // TODO: Uncomment next line and get the main header element by id
    let mainHeader = document.getElementById("main-header");

    // TODO: Set inner html of mainHeader to "JavaScript is Cool"
    let listener = function () {
      mainHeader.innerHTML = "Javascript is Cool"
    }

     let btn1 = document.getElementById("btn1");
   btn1.addEventListener("click", listener);


    // mainHeader.innerHTML = "Javascript is Cool"


    // TODO: Uncomment the next line and get the sub header element by id
    let subHeader = document.getElementById("sub-header");

    // TODO: Set the text color of subHeader to blue
    let colorChange = function () {
      subHeader.style.color = 'cornflowerblue';
    }
    let btn2 = document.getElementById("btn2");
    btn2.addEventListener("click", colorChange)


    // TODO: Uncomment the next line and get all list items
    let listItems = document.getElementsByTagName("li")  ;

    // TODO: Set text color on every other list item to grey
   let listColor = function (){
     for (let i = 0; i < listItems.length; i++){
       if(i % 2 !== 0){
         listItems[i].style.color = "blue"
       } else {
         listItems[0].style="color:grey";
       }
     }
   }
   let btn3 = document.getElementById("btn3");
   btn3.addEventListener("click", listColor);


    // TODO: Set text color of li with dbid = 1 to blue

    // TODO: Uncomment the next line and get all elements with class name sub-paragraph
    let subParagraphs = document.getElementsByClassName("sub-paragraph");

    // TODO: Change the text in the first sub paragraph to "Mission Accomplished!"
    let mission = function () {
      subParagraphs[0].innerHTML = "Mission Accomplished"
    }
    let btn4 = document.getElementById("btn4");

    btn4.addEventListener("click",mission)
  })();
</script>
</body>
</html>