大家好我正在使用身高和体重计算BMI它工作正常,但我想在Feet'inches中转换输入的身高(厘米)
HTML
//height in Centimeter
<input type="number" onblur="myFunction()" min="0" name="height" id=height_' + len + ' class="txtInput2 personalize-form box-width" required/>
//Weight
<input type="number" onblur="myFunction()" min="0" name="weight" id=weight_' + len + ' class="txtInput4 personalize-form box-width" required/>
的Javascript
function myFunction(){
var height = document.getElementById("height_1").value;
var weight = document.getElementById("weight_1").value;
if(weight > 0 && height > 0){
var finalBmi = weight/(height/100*height/100)
document.bmiForm.bmi.value = finalBmi
if(finalBmi < 18.5){
var health= document.bmiForm.meaning.value = "UW"
}
if(finalBmi > 18.5 && finalBmi < 25){
var health1= document.bmiForm.meaning.value = "IW"
alert(health1);
}
if(finalBmi > 25){
var health2= document.bmiForm.meaning.value = "OW"
alert(health2);
}
}
else{
//alert("Please Fill in everything correctly")
}
}
答案 0 :(得分:5)
试试这个
function toFeet(n) {
var realFeet = ((n*0.393700) / 12);
var feet = Math.floor(realFeet);
var inches = Math.round((realFeet - feet) * 12);
return feet + "′" + inches + '″';
}