166-how-to-click-programmatically-button-inside-iframe/demo3.html at master · createit-dev/166-how-to-click-programmatically-button-inside-iframe · GitHub

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<!-- demo3.html -->
<html>
<head>
    <style>
        #myIframe {
            height: 300px;
            width:100%;
            border: 2px solid #999;
        }
        .main {
            display: flex;
            flex-wrap: wrap;
        }
        .btn {
            margin:20px;
        }
        .col1 {
            flex: 1;
        }
    </style>
    <style>
        #iframe-wrapper1.is-loading {
            width:100%;
            background-repeat: no-repeat;
            background-position: center center;
            background-image: url(data:image/gif;base64,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);
        }
        #iframe-wrapper1.is-loading iframe {
            visibility: hidden;
        }
    </style>
</head>
<body>

<h2>Demo3</h2>
<div class="main">
    <div class="col1">
        <div id="iframe-wrapper1" class="is-loading">
            <iframe id="myIframe" src="iframe1.html"></iframe>
        </div>
    </div>
</div>

<script>
    document.getElementById('myIframe').onload = function() {
        let head = document.getElementById("myIframe").contentWindow.document.head || document.getElementById("myIframe").contentWindow.document.getElementsByTagName('head')[0];
        let body = document.getElementById("myIframe").contentWindow.document.body || document.getElementById("myIframe").contentWindow.document.getElementsByTagName('body')[0];
        let style = document.createElement('style');
        let css = "body{background:red !important;} #toggleDivButton {display:none}";
        let header = "<h1 style='color:yellow'>Appended text using JS</h1>";

        head.appendChild(style);
        style.appendChild(document.createTextNode(css));

        body.innerHTML += header;

        setTimeout(function(){
            document.getElementById("iframe-wrapper1").classList.remove("is-loading");
        },2000);

    };

</script>

</body>
</html>