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    <p>I've knocked together the starting point for a Unicode string handling object. It creates a function called <code>UnicodeString()</code> that accepts either a JavaScript string or an array of integers representing Unicode code points and provides <code>length</code> and <code>codePoints</code> properties and <code>toString()</code> and <code>slice()</code> methods. Adding regular expression support would be very complicated, but things like <code>indexOf()</code> and <code>split()</code> (without regex support) should be pretty easy to implement.</p> <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false"> <div class="snippet-code"> <pre class="snippet-code-js lang-js prettyprint-override"><code>var UnicodeString = (function() { function surrogatePairToCodePoint(charCode1, charCode2) { return ((charCode1 &amp; 0x3FF) &lt;&lt; 10) + (charCode2 &amp; 0x3FF) + 0x10000; } function stringToCodePointArray(str) { var codePoints = [], i = 0, charCode; while (i &lt; str.length) { charCode = str.charCodeAt(i); if ((charCode &amp; 0xF800) == 0xD800) { codePoints.push(surrogatePairToCodePoint(charCode, str.charCodeAt(++i))); } else { codePoints.push(charCode); } ++i; } return codePoints; } function codePointArrayToString(codePoints) { var stringParts = []; for (var i = 0, len = codePoints.length, codePoint, offset, codePointCharCodes; i &lt; len; ++i) { codePoint = codePoints[i]; if (codePoint &gt; 0xFFFF) { offset = codePoint - 0x10000; codePointCharCodes = [0xD800 + (offset &gt;&gt; 10), 0xDC00 + (offset &amp; 0x3FF)]; } else { codePointCharCodes = [codePoint]; } stringParts.push(String.fromCharCode.apply(String, codePointCharCodes)); } return stringParts.join(""); } function UnicodeString(arg) { if (this instanceof UnicodeString) { this.codePoints = (typeof arg == "string") ? stringToCodePointArray(arg) : arg; this.length = this.codePoints.length; } else { return new UnicodeString(arg); } } UnicodeString.prototype = { slice: function(start, end) { return new UnicodeString(this.codePoints.slice(start, end)); }, toString: function() { return codePointArrayToString(this.codePoints); } }; return UnicodeString; })(); var ustr = UnicodeString("fbar"); document.getElementById("output").textContent = "String: '" + ustr + "', length: " + ustr.length + ", slice(2, 4): " + ustr.slice(2, 4);</code></pre> <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div id="output"&gt;&lt;/div&gt;</code></pre> </div> </div> </p>
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    1. POjavascript and string manipulation w/ utf-16 surrogate pairs
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    1. COThanks for the effort. I am really new to javascript object structure and will take a lot from your example. Really my coding is recreational and I do enjoy working out the puzzle. Seems like Unicode in Javascript is like a Rubik's Cube, except there are fewer correct solutions. :)
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