身高&體重

請copy下面0既語法啦!!!

<script language="JAVASCRIPT"> function ClearForm(form){ form.weight.value = ""; form.height.value = ""; form.bmi.value = ""; form.my_comment.value = ""; } function bmi(weight, height) { bmindx=weight/eval(height*height); return bmindx; } function checkform(form) { if (form.weight.value==null||form.weight.value.length==0 || form.height.value==null||form.height.value.length==0){ alert("\n請輸入你的身高體重好嗎？"); return false; } else if (parseFloat(form.height.value) <= 40|| parseFloat(form.height.value) >=300|| parseFloat(form.weight.value) <=10|| parseFloat(form.weight.value) >=250){ alert("\n不要鬧了啦！你是怪物啊！\n再鬧，小心我扁你喔！"); ClearForm(form); return false; } return true; } function computeform(form) { if (checkform(form)) { yourbmi=Math.round(bmi(form.weight.value, form.height.value/100)); form.bmi.value=yourbmi; if (yourbmi >40) { form.my_comment.value="恐龍？快去看醫生！"; } else if (yourbmi >30 && yourbmi <=40) { form.my_comment.value="嗯…或許日本的相撲適合你，我也不知該說什麼了？"; } else if (yourbmi >27 && yourbmi <=30) { form.my_comment.value="你很重喔，早晨跑2000公尺，睡前做500個伏地挺身！"; } else if (yourbmi >22 && yourbmi <=27) { form.my_comment.value="超出標準了，多運動，控制一下飲食吧！祝福你！"; } else if (yourbmi >=21 && yourbmi <=22) { form.my_comment.value="真羨慕你∼繼續保持下去！最佳女（男）主角換你做做看！"; } else if (yourbmi >=18 && yourbmi <21) { form.my_comment.value="未達標準體重，多吃點對你才有好處。加油！"; } else if (yourbmi >=16 && yourbmi <18) { form.my_comment.value="哇！小心餓死∼快去吃些高熱量的食物！"; } else if (yourbmi <16) { form.my_comment.value="皮包骨了，建議你去掛急診並長期住院！"; } } return; } </script> <form method="POST" name="BMI"> <p>身高（公分）<input type="text" size="5" name="height" onfocus="this.form.height.value=''"><br> 體重（公斤）<input type="text" size="5" name="weight" onfocus="this.form.weight.value=''"><br> <input type="button" value="開始診斷" onclick="computeform(this.form)"><br> 指數<input type="text" size="5" name="bmi"><br> 診斷結果<input type="text" size="45" name="my_comment"> </p> </form>