Question

我试图显示工作总时数，然后说40 允许输入小时工资让我们说35 ..最后显示1400这是总数。可以请某人伸手。

<!DOCTYPE html> <html> <head> <meta charset="utf-8">     <title>
    assignment3</title> <script type= "text/javascript"> <!--    var name;
    //string enterted by user
               var input;   //string enterted by user
               var hours;  //string enterted by user
               var payRate; //string enterted by user
               var grossPay; //string enterted by user

               // read the name

               name = window.prompt("What is your name?");   /*paranthesis missing and quotation marks misplaced */
               input = window.prompt("Enter the hours you worked."); 
               hours = ParseInt();

               input = window.prompt("Enter you hourly wage."); 
               payRate = ParseFloat();  

               grossPay = hours * payRate;

               //result
               document.writeln ("<h1> Hello" + name + " your gross pay is $" + grossPay+" <h1>");         
                    //-->        </script>   </head>     <body> </body>     </html>

Answer 1

您似乎不会在hours或payRate中存储任何内容。请改为hours = ParseInt(input);和payRate = ParseFloat(input);。

Answer 2

你必须将变量放在ParseInt和ParseFloat中，并且JS区分大小写，修复你的外壳：

hours = parseInt(input);

此外，养成使用＆＃34; var＆＃34;的习惯。在第一次使用它之前在每个变量之前...或者将var放在顶部以养成最佳实践的习惯（不创建全局变量）。

var input;

var name = window.prompt("What is your name?");   /*paranthesis missing and var quotation marks misplaced */
input = window.prompt("Enter the hours you worked."); 
var hours = parseInt(input);

input = window.prompt("Enter you hourly wage."); 
var payRate = parseFloat(input);  

var grossPay = hours * payRate;

//result
document.writeln ("<h1> Hello" + name + " your gross pay is $" + grossPay+" <h1>");

Javascript显示输出计算

2 个答案: