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copied!<p>For what it's worth, at one point I had build this mapping of Latin-1 unicode codepoints to their ascii counterparts.</p> <p>You would use this as:</p> <pre><code>var effectiveCharCode = CODE_NO_DIACRITICS[actualCharCode]; </code></pre> <p>So, a string comparison method where <0 (s1 < s2), 0 (s1 == s2), >0 (s1 > s2) might be like:</p> <pre><code>function compareIgnoringDiacritics(s1, s2) { for(var i = 0; i < s1.length && i < s2.length; i++){ var cmp; if((cmp = ((CODE_NO_DIACRITICS[s1.charCodeAt(i)] - CODE_NO_DIACRITICS[s2.charCodeAt(i)]))) != 0){ return cmp; } } return s1.length - s2.length; } </code></pre> <p>Here's the table:</p> <pre><code>var CODE_NO_DIACRITICS = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 65, 65, 65, 65, 65, 65, 198, 67, 69, 69, 69, 69, 73, 73, 73, 73, 68, 78, 79, 79, 79, 79, 79, 215, 79, 85, 85, 85, 85, 89, 222, 223, 65, 65, 65, 65, 65, 65, 230, 67, 69, 69, 69, 69, 73, 73, 73, 73, 240, 78, 79, 79, 79, 79, 79, 247, 79, 85, 85, 85, 85, 89, 254, 89 ]; </code></pre>

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