We can create a <mark> element via the document.createElement()
method:
var x = document.createElement("MARK");
Click the button to create a MARK element with some text.
<!DOCTYPE html> <html> <body> <button onclick="myFunction()">Test</button> <script> function myFunction() {/* w ww . j a v a 2s .com*/ var x = document.createElement("MARK"); var t = document.createTextNode("Some marked text"); x.appendChild(t); document.body.appendChild(x); } </script> </body> </html>