if,else if,else 把shuifen设置在12-16或22-38之间,但是出现问题啦

Question

slmin=22 slmax=38 glmin=12 glmax=16

JS里：我用if,else if,else 把 shuifen这个变量的值设置在12-16或22-38之间，但是测试的时候，100以上全部也能输入并保存，求大神看看我的代码哪里需要改正。求指导，求改正

if(parseFloat(shuifen)>=parseFloat(slmin)&&parseFloat(shuifen)<=parseFloat(slmax)){
        danjia =slbiaozhunjia- (shuifen-slbiaozhun)*sljiagebodong;
        document.getElementById("ruKu.danJia").value=danjia.toFixed(2);
    }
    else if(parseFloat(shuifen)>=parseFloat(glmin)&&shuifen<=glmax  ){
       danjia =glbiaozhunjia- (shuifen-glbiaozhun)*gljiagebodong;
        document.getElementById("ruKu.danJia").value=danjia.toFixed(2);
    }
    else{alert("水分在"+glmin+"—"+glmax+"或"+slmin+"—"+slmax+"之间")}

Answer 1

根本没有什么else if语句，那其实是

 if
...
else
  if
  ...
  else
  ...