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    <p><strong>This</strong> is along the lines of what I was looking for. It needs better support for the different string functions. As I add to it I will update this answer.</p> <pre><code>function wString(str){ var T = this; //makes 'this' visible in functions T.cp = []; //code point array T.length = 0; //length attribute T.wString = true; // (item.wString) tests for wString object //member functions sortSurrogates = function(s){ //returns array of utf-16 code points var chrs = []; while(s.length){ // loop till we've done the whole string if(/[\uD800-\uDFFF]/.test(s.substr(0,1))){ // test the first character // High surrogate found low surrogate follows chrs.push(s.substr(0,2)); // push the two onto array s = s.substr(2); // clip the two off the string }else{ // else BMP code point chrs.push(s.substr(0,1)); // push one onto array s = s.substr(1); // clip one from string } } // loop return chrs; }; //end member functions //prototype functions T.substr = function(start,len){ if(len){ return T.cp.slice(start,start+len).join(''); }else{ return T.cp.slice(start).join(''); } }; T.substring = function(start,end){ return T.cp.slice(start,end).join(''); }; T.replace = function(target,str){ //allow wStrings as parameters if(str.wString) str = str.cp.join(''); if(target.wString) target = target.cp.join(''); return T.toString().replace(target,str); }; T.equals = function(s){ if(!s.wString){ s = sortSurrogates(s); T.cp = s; }else{ T.cp = s.cp; } T.length = T.cp.length; }; T.toString = function(){return T.cp.join('');}; //end prototype functions T.equals(str) }; </code></pre> <p>Test results:</p> <pre><code>// plain string var x = "0123456789"; alert(x); // 0123456789 alert(x.substr(4,5)) // 45678 alert(x.substring(2,4)) // 23 alert(x.replace("456","x")); // 0123x789 alert(x.length); // 10 // wString object x = new wString(""); alert(x); // alert(x.substr(4,5)) // alert(x.substring(2,4)) // alert(x.replace("","x")); // x alert(x.length); // 10 </code></pre>
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    1. POjavascript and string manipulation w/ utf-16 surrogate pairs
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    1. USBentFX
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    1. COThis looks reasonably similar to my effort.
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    2. CO@Tim Yeah the structures different, but the main thing is prototyping the needed functions. The main difference is you encode the code units into code points. I choose not to do that because I have no use for the true code points, javascript can't display them, so why bother. For my uses it is enough just to separate them so they can be counted and split at reasonable points. Have Fun!
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    3. COFair enough, if you don't need the real code points then don't use them. You may want them if you needed to send a Unicode string to the server.
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