我目前正在创建一个可以用javascript计算bmi的程序。我不知道为什么,但它不能正常工作。我一定错过了一些东西,但我不确定它是什么。如果有人能帮助我,我会非常感激。谢谢。用javascript计算bmi
<!DOCTYPE html>
<!-- -->
<html>
<head>
<meta charset="UTF-8" />
<title>Body Mass Index</title>
</head>
<BODY>
<header><img src="bmi.jpeg" width="380" height="132" border="0" alt="bmi"></header>
<video controls="controls"
width="320px" height="260px">
<source src="bmi.mp4"/>
<p>When it comes to weight loss, there's no lack of fad diets promising fast results. But such diets limit your nutritional intake, can be unhealthy, and tend to fail in the long run.</p>
<p>The key to achieving and maintaining a healthy weight isn't about short-term dietary changes. It's about a lifestyle that includes healthy eating, regular physical activity, and balancing the number of calories you consume with the number of calories your body uses.</p>
<p>BMI is a number calculated from a person's weight and height. BMI provides a reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems.</p>
<p>The BMI ranges are based on the relationship between body weight and disease and death.
Overweight and obese individuals are at increased risk for many diseases and health conditions, including the following:</p>
You need a flash player to view this video.
</video>
<ul>
<li>Hypertension</li>
<li>Dyslipidemia (for example, high LDL cholesterol, low HDL cholesterol, or high levels of triglycerides)</li>
<li>Type 2 diabetes</li>
<li>Coronary heart disease</li>
<li>Stroke</li>
<li>Gallbladder disease</li>
<li>Osteoarthritis</li>
<li>Sleep apnea and respiratory problems</li>
<li>Some cancers (endometrial, breast, and colon)</li>
</ul>
<script type="text/javascript">
function CalculateBMI(){
var inch=12;
var ft;
var bmi= Math.write(weight*703)/ (inch height)^2;
if(bmi<=19)
{"Underweight";
}
if else(19<bmi<=25)
{"Desirable";
}
if else(25<bmi<=29)
{"Prone to health risks";
}
if else (29<bmi<=40)
{"obese"
}
else(40<bmi)
{"Extremely Obese"
}
}
</script>
<form name="bmi">
<p> Weight:<p/></td> <td><input type="text" id="weight" name="weight" size="25" />
<p>Height:</p> <input type="text" id="textbox" name="textbox" size="25" /><td><p>Ft.</p><input type="text" id="textbox" name="textbox" size="25" /> <p>In.</p>
<input type="submit" id="Calculate BMI" name="Calculate BMI" value="Calculate BMI" size="25" onclick="CalculateBMI()" />
According to the Panel on
Energy, Obesity, and Body Weigth Standards published by
American Journal of Clinical Nurttrition, your category is:
<input type="text" id="textbox" name="textbox" size="25" />
</form>
</BODY>
</html>
对不起,但代码中充满了错误。从[打开浏览器控制台]开始(http://webmasters.stackexchange.com/questions/8525/how-to-open-the-javascript-console-in-different-browsers)并首先计算出语法错误。 – JJJ