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How to create and use a Syntax Highlighter with JavaScript?
To create and use syntax highligher, the code is as follows −
Example
<!DOCTYPE html>
<html>
<head>
<style>
body {
font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.colorLinks {
color: rgb(131, 44, 212);
text-decoration: none;
font-size: 20px;
font-weight: bold;
}
.setColor {
margin: 20px;
padding: 10px;
border: none;
font-size: 18px;
background-color: rgb(226, 43, 89);
color: white;
}
</style>
</head>
<body>
<h1>Syntax Highlighting example</h1>
<div class="CodeDiv">
<a href="https://www.google.com">Go to google.com</a>
<a href="https://www.facebook.com">Go to facebook.com</a>
</div>
<button class="setColor" onclick="highlightLinks()">Click Here</button>
<h2>Click the above button to highlight the links</h2>
<script>
var anchrorRg = /[^<]*(<a href="([^"]+)">([^<]+)<\/a>)/g;
function highlightLinks() {
var text = document.querySelector(".CodeDiv").innerHTML;
text = text.replace(anchrorRg, function() {
function check(arguments) {
let tempArr = [];
tempArr.push(Array.prototype.slice.call(arguments, 2, 4));
return `<a class="colorLinks" href=${tempArr[0][0]}>${tempArr[0][1]}</a><br>`;
}
return check(arguments);
});
document.querySelector(".CodeDiv").innerHTML = text;
}
</script>
</body>
</html>Output
The above code will produce the following output on window size greater than 700px −
On clicking the “Click Here” button −
Updated on: 12-May-2020
162 Views
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