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I need help I would like the time to run but every time it hits a minute the font style, font size, and color in JavaScript. Directions below

Write an HTML document that uses JavaScript to show on your page the time (MM:SS) a visitor has spent viewing your web page.

engineering   Computer-Science   
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Answer #1

Here is code:

<!DOCTYPE html>
<html lang="en">

<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script>
let fontType = ['Courier New',
'Times New Roman',
'Arial',
'Verdana',
'Franklin Gothic Medium',
'Gill Sans',
'Impact'
]
let colors = [
'Gray', 'Red', 'Blue', 'Green', 'Brown', 'Purple', 'Orange', 'Cyan'
]

function dateDiffToString(a, b) {
diff = Math.abs(a - b);
ms = diff % 1000;
diff = (diff - ms) / 1000
ss = diff % 60;
diff = (diff - ss) / 60
mm = diff % 60;
return {
"mm": mm,
"ss": ss
};
}


window.onload = () => {
let startDate = new Date();
setInterval(() => {
let currentDate = new Date();
let span = document.createElement("span");
let diffTime = dateDiffToString(startDate, currentDate);
span.innerText = (diffTime.mm < 10 ? '0' + diffTime.mm : diffTime.mm )+
":" +
(diffTime.ss < 10 ? '0' + diffTime.ss : diffTime.ss);
span.style.fontSize = diffTime.mm % 7 + 1;
span.style.fontFamily = fontType[diffTime.mm % 7];
span.style.color = colors[diffTime.mm % 7];
document.getElementById("output").innerHTML = span.outerHTML;
}, 1000);

}
</script>
</head>

<body>
<div>
<span>The time you have spent viewing this page so far : </span>
<span id="output"></span>
</div>
</body>

</html>

Output:

The time you have spent viewing this page so far: 01:14

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