Programming/JavaScript/JavaScriptStringEncode()

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Contents 1 JavaScriptStringEncode 1.1 See Also 2 The code

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JavaScriptStringEncode

JavaScriptStringEncode is a JavaScript function that returns a string that can be executed as JavaScript to re-create a JavaScript object or literal. It also makes the string easier to read, as control characters, high-ASCII and Unicode characters are encoded so you can see their character codes.

Example usage:

JavaScriptStringEncode("test\r\nnewline\r\nUnicode: \"\uFFFF\""));

Return value:

test\r\nnewline\r\nUnicode: \"\uFFFF\"

See Also

• visualize()
• serialize()
• stackDump()

The code

function JavaScriptStringEncode(sString) {
	return (sString+"").replace(/[\0-\x1F\"\\\x7F-\xA0\u0100-\uFFFF]/g, function (sChar) {
		switch (sChar) {
			case "\b": return "\\b";
			case "\t": return "\\t";
			case "\n": return "\\n";
			case "\f": return "\\f";
			case "\r": return "\\r";
			case "\\": return "\\\\";
			case "\"": return "\\\"";
		}
		var iChar = sChar.charCodeAt(0);
		if (iChar < 0x10) return "\\x0" + iChar.toString(16);
		if (iChar < 0x100) return "\\x" + iChar.toString(16);
		if (iChar < 0x1000) return "\\u0" + iChar.toString(16);
		return "\\u" + iChar.toString(16);
	});
}