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BMI 計算機 #15

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BMI 計算機 #15

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21 changes: 21 additions & 0 deletions 2017-chu-battle0450/demo.js
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//黃佳晨
var getBMI = function(weight, height){
return weight/((height/100)*(height/100));

}
getBMI(65,171);
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這行不需要

var BMI = getBMI(65,171);
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這邊先不要存入變數，因為這樣下面使用的BMI並沒有用到getMessage函式傳入的參數

console.log('BMI: '+BMI);
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那這邊就先改成console.log('BMI:'+getBMI(65,171));


var getMessage = function(weight,height)
{
getBMI(weight,height);
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這行也不需要

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這邊就可以宣告 var BMI=getBMI(weight,height);了，這樣就有使用到傳入的參數了

if(BMI<18.5)
console.log('體重過輕');
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這樣是直接輸出，沒有做回傳的動作
作業題目是要函數回傳，所以先return訊息
再到函式外面log結果

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直接return "要顯示的結果"就可以了

else if(BMI<24&&BMI>=18.5)
console.log('正常範圍');
else if(BMI>=24&&BMI<30)
console.log('過重');
}

getMessage(65,171);
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將函式中return的結果在這裡log出來
console.log(getMessage(65,171));

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這裡再console.log(getMessage(65,171));就好囉

13 changes: 13 additions & 0 deletions 2017-chu-battle0450/package.json
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{
"name": "ex03",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "node demo.js",
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC"
}