<html>
<header>
<title>测试emoji字符长度title>
header>
<body>
<script type="text/javascript">
let rsAstralRange = '\\ud800-\\udfff',
rsZWJ = '\\u200d',
rsVarRange = '\\ufe0e\\ufe0f',
rsComboMarksRange = '\\u0300-\\u036f',
reComboHalfMarksRange = '\\ufe20-\\ufe2f',
rsComboSymbolsRange = '\\u20d0-\\u20ff',
rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange;
let reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');
let rsFitz = '\\ud83c[\\udffb-\\udfff]',
rsOptVar = '[' + rsVarRange + ']?',
rsCombo = '[' + rsComboRange + ']',
rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
reOptMod = rsModifier + '?',
rsAstral = '[' + rsAstralRange + ']',
rsNonAstral = '[^' + rsAstralRange + ']',
rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
rsSeq = rsOptVar + reOptMod + rsOptJoin,
rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
let reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
function toArray(val) { // 字符串转成数组
return hasUnicode(val)
? unicodeToArray(val)
: asciiToArray(val);
}
function hasUnicode(val) {
return reHasUnicode.test(val);
}
function unicodeToArray(val) {
return val.match(reUnicode) || [];
}
function asciiToArray(val) {
return val.split('');
}
var str = "zhang???????????1??23????66";
var arr = toArray(str);
for (var i in arr) {
console.log(arr[i]);
document.write(arr[i]);
document.write("
");
}
script>
body>
html>