利用正则按固定长度分割字符串

    function formatLongStrToArr(str,len){
      var arrLength = Math.ceil(str.length / len);
      var tempArr = new Array(arrLength);
      for(var index = 0; index<arrLength; index++){
        tempArr[index] = str.substr(index*len,len);
      }
      return tempArr;
    }
    console.log(formatLongStrToArr(‘全新计算架构和编程语言‘,3));   //["全新计","算架构","和编程","语言"]
    console.log(formatLongStrToArr(‘new计算-架构&编程-语言‘,5)); //["new计算","-架构&编","程-语言"]

 console.log(‘全新计算架构和编程语言‘.match(/.{1,3}/g)); //["全新计","语言"]
 console.log(‘new计算-架构&编程-语言‘.match(/.{1,5}/g)); //["new计算","程-语言"]