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Editorial Team
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Asked: 2026-06-18T08:20:29+00:00

When i click on a link, i want a div to become visible. However,

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When i click on a link, i want a div to become visible. However, i need to do this by knowing which link is clicked on, by checking which id it has. The content is hidden, but will not become visible when i click on a link. I am not allowed to use jquery. Any solution?

Javascript

function show() {
    var a = document.getElementsByTagName("a");
    if (a.id == "link1") {
        document.getElementByID("content1").style.visibility = 'visible';
    } else if (a.id == "link2") {
        document.getElementByID("content2").style.visibility = 'visible';
    } else if (a.id == "link3") {
        document.getElementByID("content3").style.visibility = 'visible';
    } else if (a.id == "link4") {
        document.getElementByID("content4").style.visibility = 'visible';
    }
}

function init() {

    var divs = document.getElementsByTagName("div");
    for (i = 0; i < divs.length; i++) {
        if (divs[i].className == "div") {
            divs[i].style.visibility = 'hidden';
        }
    }
    var a = document.getElementsByTagName("a");
    a.onclick = show;
}

window.onload = init;

HTML 

<head>
    <title>Inl1-1</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <link rel="stylesheet" type="text/css" href="style-1.css">
    <script type="text/javascript" src="http://code.jquery.com/jquery-latest.js"></script>
    <script type="text/javascript" src="Uppg1.js"></script>
</head>
<body>
    <ul class="meny" id="menu">
        <li><a href="#" id="link1">Utvärdering/Feedback</a>
        </li>
        <li><a href="#" id="link2">Kontakt</a>
        </li>
        <li><a href="#" id="link3">Öppettider</a>
        </li>
        <li><a href="#" id="link4">Om Asperöd</a>
        </li>
    </ul>
    <div class="div" id="content1">
        <p>Du kan kontakta oss på följande nummer:
            <br/>040-123456</p>
        <p>Du kan även mejla oss:
            <br/>aperöd@hotmail.com</p>
    </div>
    <div class="div" id="content2">
        <p><b>Asperåd Äventyrsland</b>
        </p>
        <p>Växel: 0200-123456999 (kl.08:30-15)</p>
        <p>Stora Vägen 140</p>
        <p>289 22 Aperöd</p>
        <p>Skicka oss din <a href="Inl1-3.html">fråga</a>
        </p>
    </div>
    <div class="div" id="content3">
        <p>Vi har följande öppettider:</p>
        <p>Mån-Fre: 10:00 - 20:00</p>
        <p>Lör: 10:00 - 18:00</p>
    </div>
    <div class="div" id="content4">
        <p>Asperöd är en fin park för alla möjliga personer. Vi erbjuder en massa,
            <br/>men det kostar 500kr för att delta för en dag.</p>
        <p>Asperöd är fylld med turister som besöker platsen minst en gång per månad.</p>
        <p>Asperöd är bland de största nöjesparkerna i Scandinavien.</p>
    </div>
</body>
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1 Answer

  1. Editorial Team

    Create a links object which provides the mappings. Grab the target element from the event and store its id. Then use the id to grab the proper element’s id from the links object.

    function show(event){
var links = {
    link1: "content1",
    link2: "content2",
    link3: "content3",
    link4: "content4"
};

for(var x = 0; x < links.length; x++){
   document.getElementById(links[id]).style.visibility = "hidden";
}

var id = event.target.id;
var a = document.getElementsByTagName("a");
document.getElementById(links[id]).style.visibility = 'visible';
}

    There is also an issue with the init function. Since a is an array of elements you must iterate this array and bind the show function to the onclick event.

    function init() {

    var divs = document.getElementsByTagName("div");
    for (i = 0; i < divs.length; i++) {
        if (divs[i].className == "div") {
            divs[i].style.visibility = 'hidden';
        }
    }
    var a = document.getElementsByTagName("a");
    for(var x = 0; x < a.length; x++){
       a[x].onclick = show;
    }
}

    Working Example: http://jsfiddle.net/538s2/

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