[游戏开发]Cocos Creator 字符串（名字长度）处理

废话不多说，直接上代码。

export?{StringUtil};

class?StringUtil{

?????/**

?????*?限制字符串长度

?????*?@param?nickname?

?????*?@param?len?英文字符长度

?????*/

????public?static?subNameString(nickname:string,len:number?=?10){

? ? ? ?// if(!nickname?||?typeof?nickname?!=?"string"){

? ? ? ?//? ?console.error("?参数错误！！！?");

? ? ? ?//? ?return;

? ? ? ? //}

???????if(nickname?==?""){

??????????return?nickname;

???????}

???????let?localStr?=?StringUtil.getStringObjectByBytes(nickname,len);

???????return?localStr;

????}

????/**

?????*?获取指定字节数大小的字符串长度

?????*?@param?nickname?

?????*?@param?len?英文字符长度

?????*/

????public?static?getStringObjectByBytes(nickname:string,len:number){

????????var?localStr?=?"";

????????var?localLength?=?0;

????????for?(let?i?=?0;?i?<?nickname.length;?i++)?{

????????????if(nickname.charCodeAt(i)?<?128){//不是汉字

????????????????localLength?+=1;

????????????}else{

????????????????localLength?+=2;

????????????}

????????????if(localLength?<=?len){

????????????????localStr?+=?nickname.slice(i,i?+?1);

????????????}else{

????????????????localStr?+=?"...";

????????????????break;

????????????}

????????}

???????return?localStr;

????}

?????/**

?????*?统计字符串字节数（英文字符字节）

?????*?@param?nickname?

?????*/

????public?static?countStringByte(nickname:string){

????????let?localLength?=?0;

????????if(nickname?&&?typeof?nickname?==?"string"){

????????????for?(let?i?=?0;?i?<?nickname.length;?i++)?{

????????????????if(nickname.charCodeAt(i)?<?128){

????????????????????localLength?+=1;

????????????????}else{

????????????????????localLength?+=2;

????????????????}

????????????}

????????}

????????return?localLength;

????}

}