js判断奇数偶数获取数组，分离数组为字符串

var strb = [],stra=[],strc=["糖尿病", "3", "高血压", "2", "冠心病", "1"];
for(let i=0;i<strc.length;i++) {
  if(i%2==0) {
    strb.push(strc[i])
  }else{
    stra.push(strc[i])
  }
}
console.log("姚辉乾");
console.log(strc)
console.log(stra)
console.log(strb)