嘿，我刚刚开始 JavaScript 编程，我不明白为什么我的程序没有“做数学”。当我在框中输入数字时，它不会在底部的结果框中给出结果。我不确定是否需要将脚本分成多个计算或保持原样。这是我第一个使用 javascript 的项目，我不确定我是否错过了一些东西。任何帮助将不胜感激。
<!DOCTYPE html>
<html>
<head>
<title>Javascript Financial Formulas</title>
<script type="text/javascript">
function calculateLoan(){
var Profit = parseFloat(document.getElementID("Profit").value);
var AverageNumberOfShares = parseInt(document.getElementById("AverageNumberOfShares").value);
var PricePerShare = parseFloat(document.getElementById("PricePerShare").value);
var TotalAssets = parseFloat(document.getElementID("TotalAssets").value);
var IntangibleAssets = parseFloat(document.getElementID("IntangibleAssets").value);
var Liabilities = parseFloat(document.getElementID("Liabilities").value);
var PricePerShare = parseFloat(document.getElementID("PricePerShare").value);
var EarningsPerShare = parseFloat(document.getElementID("EarningsPerShare").value);
var PERatio = parseFloat(document.getElementID("PERatio").value);
var PercentExpectedGrowth = parseFloat(document.getElementID("PercentExpectedGrowth").value);
var EarningsPerShare;
var PriceToBook;
var PERatio;
var PriceToEarningsGrowth;
EarningsPerShare = Profit / AverageNumberOfShares;
PriceToBook = PricePerShare / (TotalAssets - (IntangibleAssets + Liabilities));
PERatio = PricePerShare / EarningsPerShare;
PriceToEarningsGrowth = PERatio / PercentExpectedGrowth;
document.getElementById("EarningsPerShare").value = EarningsPerShare;
document.getElementById("PriceToBook").value = PriceToBook;
document.getElementById("PERatio").value = PERatio;
document.getElementById("PriceToEarningsGrowth").value = PriceToEarningsGrowth;
}
</script>
</head>
<body>
<h1>Javascript Financial Formulas</h1>
<p>To use, please input financial information and press calculate<p>
<form name="Financial Formulas">
<p>Earnings per share:<p>
Profit:
<input type = "text" id="Profit" name="Profit" value="" /><br />
Average number of shares:
<input type = "text" id="AverageNumberOfShares" name="AverageNumberOfShares" value="" /><br />
<p>Price to Book:<p>
Price per share:
<input type = "text" id="PricePerShare" name="PricePerShare" value="" /><br />
Total Assets:
<input type = "text" id="TotalAssets" name="TotalAssets" value="" /><br />
Intangible Assets:
<input type = "text" id="IntangibleAssets" name="IntangibleAssets" value="" /><br />
Liabilities:
<input type = "text" id="Liabilities" name="Liabilities" value="" /><br />
<p>PE Ratio:<p>
Price per share:
<input type = "text" id="PricePerShare" name="PricePerShare" value="" /><br />
Earnings per share:
<input type = "text" id="EarningsPerShare" name="EarningsPerShare" value="" /><br />
<p>Price to Earnings Growth:<p>
PE Ratio:
<input type = "text" id="PERatio" name="PERatio" value="" /><br />
Percent Expected Growth:
<input type = "text" id="PercentExpectedGrowth" name="PercentExpectedGrowth" value="" /><br />
<input type = "button" id="calculate" name="Calculate" value="Calculate" onclick="calculateLoan();" />
<input type = "reset" id="Reset" name="Reset" value="Reset" /><br />
<br>
Earnings per share:
<input type = "text" id="EarningsPerShare" name="EarningsPerShare:" value="" /><br />
Price to Book:
<input type = "text" id="PriceToBook" name="PriceToBook:" value="" /><br />
PE Ratio:
<input type = "text" id="PERatio" name="PERatio:" value="" /><br />
Price to Earnings Growth:
<input type = "text" id="PriceToEarningsGrowth" name="PriceToEarningsGrowth:" value="" /><br />
</form>
</body>
</html>最佳答案
如果这是您的第一个 JavaScript 程序，您会很高兴知道浏览器中有控制台输出。只需按 F12，您就会看到打印的错误信息。 :)
就您而言，错误与 getElementById 有关，您错误地拼写了 getElementId。
错误说:
Uncaught TypeError: document.getElementID is not a function
关于javascript - 初学者 JavaScript - 结果未发布在结果框中，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/50900288/