Answers for "open website in javascript iframe"

how to get element in iframe using javascript

const iframe = document.getElementById("myIframe");

const iWindow = iframe.contentWindow;
const iDocument = iWindow.document;

// accessing the element
const element = iDocument.getElementsByTagName("p")[0];
element.style.color = "green";

run javascript in iframe

var iframe = document.getElementById('frameID'),
    iframeWin = iframe.contentWindow || iframe,
    iframeDoc = iframe.contentDocument || iframeWin.document;

window.hello = function () {
    alert('hello from owner!');
};

$(iframeDoc).ready(function (event) {
    iframeDoc.open();
    iframeDoc.write('iframe here');
    iframeDoc.write('\<script>alert("hello from iframe!");\<\/script>');
    iframeDoc.write('\<script>parent.hello();\<\/script>');
    iframeDoc.close();
});