Base64 decode selected text

base64-decode-selected.js

var SelectedText = function() {};

SelectedText.prototype.get = function() {
	var text = "";
	if (window.getSelection) {
		text = window.getSelection().toString();
	} else if (document.selection && document.selection.type != "Control") {
		text = document.selection.createRange().text;
	}
	return text;
};

SelectedText.prototype.set = function(replacementText) {
	var sel, range;
	if (window.getSelection) {
		sel = window.getSelection();
		if (sel.rangeCount) {
			range = sel.getRangeAt(0);
			range.deleteContents();
			range.insertNode(document.createTextNode(replacementText));
		}
	} else if (document.selection && document.selection.createRange) {
		range = document.selection.createRange();
		range.text = replacementText;
	}
};


try {
	var sText = new SelectedText();
	var decodedText = atob(sText.get());
	sText.set(decodedText);
} catch(e) {
	alert(e.message);
}