var bmi = weight/(height^2); alert(bmi); if(bmi<18.5){ console.log('过轻'); }else{ if(18.5<=bmi&&bmi<25){ console.log('正常'); }else{ if(25<=bmi&&bmi<28){ console.log('过重'); }else{ if(28<=bmi&&bmi<32){ console.log('肥胖'); }else{ console.log('严重肥胖'); } } } }
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时间真的有情吗