codeup-web-exercises/dom-query-js.html at main · luisOrell/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>
<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>

<button id="button-1">Change Title</button>
<button id="button-2">Change Subtitle Color</button>
<button id="button-3">Alternate List Items</button>
<button id="button-4">Change Paragraph</button>

<script>
    'use strict';

//********Change background color of H1 element***********
    // obtain a reference to the target element
    // create a handler function

    const mainHeader = document.getElementById("main-header");

    document.getElementById('main-header').addEventListener("click", () =>
        mainHeader.style.backgroundColor = "yellow");


//**********Change paragraph font color**************//

    document.querySelector(".sub-paragraph").addEventListener('dblclick', function () {
        subParagraphs[0].style.fontSize = "18px";
    }
    )

    //***********Set all li text color to red when the mouse is hovering; reset to black when it is not.**********//
    const itemsList = document.getElementsByTagName("li");

    document.querySelector("li").addEventListener('mouseenter', function () {

        for (let i = 0; i < itemsList.length; i++) {
            itemsList[i].style.color = "red";

        }
    })

    document.querySelector("li").addEventListener('mouseleave', function() {
        for (let i = 0; i < itemsList.length; i++) {
            itemsList[i].style.color = "black";
        }
    });


    // document.querySelector( selector ).addEventListener('mouseenter', handlerIn);

    // const listener4 = function () {
    //     subParagraphs[0].innerHTML = "Mission Accomplished"
    // }
    // button4.addEventListener('click', listener4)


    //**********Button 1************//
    //****** Set innerHTML to 'Javascript is cool'****//

    // obtain a reference to the target element
    // const button1 = document.getElementById("button-1");
    // // create a handler function
    // const mainHeader = document.getElementById("main-header");
    // const listener = () => {
    //     mainHeader.innerHTML = "Javascript is cool!";
    // }
    // // register the listener to handle clicks on btn1
    // button1.addEventListener('click', listener);


    //********Button 2**********//

    const button2 = document.getElementById("button-2");
    const subHeader = document.getElementById("sub-header");
    const listener2 = function () {
        subHeader.style.color = "blue";
    }
    button2.addEventListener('click', listener2);

    //*********Button 3*********//

    const button3 = document.getElementById("button-3");
    // const itemsList = document.getElementsByTagName("li");
    const listener3 = function () {
        for (let i = 0; i < itemsList.length; i++) {
            if (i % 2 !== 1) {
                itemsList[i].style.color = "orange"
            }
        }
    }
    button3.addEventListener('click', listener3);

    //************Button 4***********
    //Change Paragraph
    const button4 = document.getElementById("button-4")
    const subParagraphs = document.getElementsByClassName("sub-paragraph")
    const listener4 = function () {
        subParagraphs[0].innerHTML = "Mission Accomplished"
    }
    button4.addEventListener('click', listener4)


        // "use strict";
        // // TODO: Uncomment next line and get the main header element by id
        // const mainHeader = document.getElementById("main-header");
        //
        // // TODO: Set inner html of mainHeader to "JavaScript is Cool"
        // mainHeader.innerHTML = "Javascript is cool"

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

        // TODO: Set the text color of subHeader to blue
        // subHeader.innerHTML = '<h2 style="color: blue">Hello Again</h2>'

        // subHeader.style.color = "blue"

        // TODO: Uncomment the next line and get all list items
        // const listItems = ;
        // const listItems = document.getElementsByTagName("li")
        // for(let i = 0; i < listItems.length; i++) {
        //     console.log(listItems);
        // }

        // TODO: Set text color on every other list item to grey
        // const greyItems = document.getElementsByTagName("li")
        // for(let i = 0; i < listItems.length; i++) {
        //     if(i % 2 !== 0) {
        //         listItems[i].setAttribute("style", "color: grey")
        //     }
        // }
        // console.log(greyItems)

        // for(let i = 0; i < listItems.length; i++){
        //     if(i % 2 !== 1) {
        //         listItems[i].style.color = "grey"
        //     }
        // }

        // TODO: Set text color of li with dbid = 1 to blue
        listItems[0].setAttribute("style", "color: blue")

        listItems[0].style.color = "blue"


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

        // TODO: Change the text in the first sub paragraph to "Mission Accomplished!"
        // subParagraphs[0].innerHTML = "Mission Accomplished"

    //must specify list of array when using class names - list of elements
    // when using ElementByID - there should only be one ID in the html content so does not require index

    //get and set attributes
</script>
</body>
</html>