JS對字符串字節長度處理：

String.prototype.gblen = function () {
??? var len = 0;
??? for (var i = 0; i < this.length; i++) {
??????? if (this.charCodeAt(i) > 127 || this.charCodeAt(i) == 94) {
??????????? len += 2;
??????? } else {
??????????? len++;
??????? }
??? }
??? return len;
}
String.prototype.gbtrim = function (len, s) {
??? var str = '';
??? var sp = s || '';
??? var len2 = 0;
??? for (var i = 0; i < this.length; i++) {
??????? if (this.charCodeAt(i) > 127 || this.charCodeAt(i) == 94) {
??????????? len2 += 2;
??????? } else {
??????????? len2++;
??????? }
??? }
??? if (len2 <= len) {
??????? return this;
??? }
??? len2 = 0;
??? len = (len > sp.length) ? len - sp.length : len;
??? for (var i = 0; i < this.length; i++) {
??????? if (this.charCodeAt(i) > 127 || this.charCodeAt(i) == 94) {
??????????? len2 += 2;
??????? } else {
??????????? len2++;
??????? }
??????? if (len2 > len) {
??????????? str += sp;
??????????? break;
??????? }
??????? str += this.charAt(i);
??? }
??? return str;
}

?

C#判斷字節長度處理：

? if (System.Text.Encoding.Default.GetByteCount(member.NICK) > 20 || System.Text.Encoding.Default.GetByteCount(member.NICK)<2) { sysResult = new SysResult("-1", "昵稱的字符長度必須為2-20字節"); return Json(sysResult); }
???????????

轉載于:https://www.cnblogs.com/Chuifr/archive/2013/02/26/2933027.html

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