为什么此表单代码不起作用？这似乎是合乎逻辑的

Question

我正在尝试编写一个简单的表单，要求以下输入：

情绪、年龄和性别

我在情绪提示中放了什么并不重要。它总是积极的。对于年龄，如果他们未满 18 岁，我希望选项卡关闭。对于性别，情绪提示也是如此。任何帮助将不胜感激。

var userMood = prompt("Hey! How's it going?");
	if (userMood = "good" || "Good") {
		alert("Awesome! We just need you to fill out a form for security reasons.");
	} else if (userMood != "good" || "Good") {
		alert("Oh, I'm sorry to hear that... We just need you to fill out a form for security reasons.");
}
var userAge = prompt("What is your current age?");
	if (userAge >= "18" ) {
		alert("Great! You are the sufficient age to enter this webpage!");
		userAge = true;
	} else if ( userAge <= "17"){
		alert("Sorry, you are too young to view this content...");
		window.close();
}
var userGender = prompt ("What is your gender?");
	if (userGender = "male" || "Male" || "female" || "Female"){
		alert("Great! You're human!");
		userGender = true;
	} else {
		alert("The webpage has perdicted non-human cyber activity, you can no longer continue.");
		window.close();
	}

Answer 1

我将使我的答案冗长以帮助您学习。 对于初学者来说，当您打算使用==甚至===时，您正在使用=。 这就是为什么心情总是注册为好，因为userMood = "好"将userMood设置为"好"，因此表达式的计算结果为"好"，这将验证if语句，因为字符串的FALSE是"，而true是每隔一个字符串。userMood = "good" || "Good"也不会做你认为它做的事情。您需要像这样检查两个字符串(userMood === "good" || userMood === "Good").

Answer 2

我尝试将代码中的某些行更改为下面的内容。

var userMood = prompt("Hey! How's it going?");
if (userMood == "good" || userMood == "Good") 
	    alert("Awesome! We just need you to fill out a form for security reasons.");
else  
	    alert("Oh, I'm sorry to hear that... We just need you to fill out a form for security reasons.");
var userAge = prompt("What is your current age?");
if (userAge >= 18 )
{
	    alert("Great! You are the sufficient age to enter this webpage!");
	    userAge = true;
}
else if ( userAge < 18 && userAge > 0)
{
	    alert("Sorry, you are too young to view this content...");
	    window.close();
}
else if ( userAge < 0 )
{
alert(" ***** prompt message for inputting negative number ****");     
window.close();
}
var userGender = prompt ("What is your gender?");
if (userGender == "male" ||  userGender == "Male" || userGender == "female" || userGender == "Female")
{
	    alert("Great! You're human!");
	    userGender = true;
}   
else 
{
	    alert("The webpage has perdicted non-human cyber activity, you can no longer continue.");
	    window.close();
}