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home work

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mayajing2378

#1 Created at ... [Delete] [Delete and Lock User]

var bmi=weight/(height*height); if(isNaN(bmi)) { alert("非法输入!"); } else{ 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('严重肥胖'); }


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