var bmi = weight/(height*height); if (bmi<18.5){ alert('过轻') }else if(bmi<25){ alert('正常') }else if(bmi<28){ alert('过重') }else if(bmi<32){ alert('肥胖') }else{ alert('过度肥胖') }
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NotFatCat
var bmi = weight/(height*height); if (bmi<18.5){ alert('过轻') }else if(bmi<25){ alert('正常') }else if(bmi<28){ alert('过重') }else if(bmi<32){ alert('肥胖') }else{ alert('过度肥胖') }