我正在上我的第二门JavaScript课程,我们还没有学习调试工具,我只能查看浏览器抛出的错误。下面是我写的代码(其中包括数据验证):
/**
* displayFunction gets info from form and displays message on screen
* it also called all the validation functions for the form
*/
function displayInfo() {
//declare variables and initialize them.
var fullName = document.myForm.fullName.value;
var int1 = parseInt(document.forms["myForm"]["int1"].value);
var int2 = parseInt(document.myForm.int2.value);
var num3 = parseInt(document.myForm.num3.value);
var num4 = parseInt(document.myForm.num4.value);
var num5 = parseInt(document.myForm.num5.value);
//make sure variable flag = 0
flag = 0;
//call the Validation functions
nameValidate(fullName);
int1Validate(int1);
int2Validate(int2);
num3Validate(num3);
num4Validate(num4);
num5Validate(num5);
//call tha functions to find largest and smallest numbers and the sum
var largest = largest(int1, int2, num3, num4, num5);
var smallest = smallest(int1, int2, num3, num4, num5);
var sum = sum(int1, int2, num3, num4, num5);
//Display the outpu t it everything is entered right.
if (flag == 1) {
return false;
} else {
document.getElementById("message").innerHTML = "Hello, " + fullName + ". You entered: " + int1 + ", " + int2 + ", " + num3 +
", " + num4 + ", " + num5 + ". The largest number entered was " + largest + ". The smallest number you entered was " + smallest +
". And the sum of all of the numbers was " + sum + ".";
}
}
我正在尝试从一个表单中获取数字,然后找到最大的数字、最小的数字和它们的和。我已经为这些创建了单独的函数,并在上面的代码中调用了它们,但显然我漏掉了一些重要的东西,因为浏览器窗口中的检查出现了错误,指出"largest"、"smallest"和"sum"不是函数。它们都在代码中。我在忍受过敏性头痛的情况下尝试做这个,可能漏掉了一些很小的东西,希望有人能发现我少写了什么。
以下是最大值函数,其他两个函数基本相同:
/**
* largest takes in the numbers and returns the largest number
* @params - 5 ints
* @return - largest number
*/
//declare function largest and take in int1, int2, num3, num4, and num5
function largest (n1, n2, n3, n4, n5) {
//declare variable largest and use Math.max to find the largest number
var largest = Math.max(n1, n2, n3, n4, n5);
return largest;
}