Write a command to change all and in file foohtml to and re

Write a command to change all <B> and </B> in file foo.html to <STRONG> and </STRONG>, respectively.

ANS:

1) In JQuery we can easily do this,

ex:

$(\'b\').replaceWith(function() {
return $(\'<strong>\').html($(this).html());
});

2) By USING JAVASCRIPT

foo.html

<!DOCTYPE html>
<html>

<head>
<title>Replacing b with strong</title>
</head>

<body>

<div id=\"btostrong\">
Welcome
<b>Hi</b>

</div>

var node = document.getElementById(\"btostrong\")

var search = node.getElementsByTagName(\"b\");

var btag, strongtag;

while (btag = search[0]) {
strongtag = document.createElement(\"strong\");

while (btag.firstChild) {
strongtag.appendChild(btag.firstChild);
}

btag.parentNode.replaceChild(strongtag, btag);
}
</script>
</body>
</html>