设置属性时，我可以在 Javascript 对象中编写 if 语句吗？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/21562659/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Can I write an if statement within a Javascript object when setting an attribute?
提问by Jorge Olivero
Setting attributeTwo using an if statement. What is the correct way to do this?
使用 if 语句设置 attributeTwo。这样做的正确方法是什么？
var testBoolean = true;
var object = {
attributeOne: "attributeOne",
attributeTwo: if (testBoolean) { "attributeTwo" } else { "attributeTwoToo" },
}
回答by Matt
No, however you can use the ternary operator:
不，但是您可以使用三元运算符：
var testBoolean = true;
var object = {
attributeOne: "attributeOne",
attributeTwo: testBoolean ? "attributeTwo" : "attributeTwoToo"
}
回答by Tony Nardi
You can use an if statement, if it is within a immediately invoked function.
您可以使用 if 语句，如果它在立即调用的函数中。
var x = {
y: (function(){
if (true) return 'somevalue';
}())
};
回答by bajran
you can also do by this method
你也可以用这个方法
var testBoolean = true;
var object = {
attributeOne: "attributeOne"
}
1
1
if(testBoolean){
object.attributeTwo = "attributeTwo"
}else{
object.attributeTwo = "attributeTwoToo"
}
2
2
object.attributeTwo = testBoolean ? "attributeTwo" : "attributeTwoToo"
回答by Andrew Clark
You can't use an if statement directly, but you can use ternary operator(aka conditional operator) which behaves the way you want. Here is how it would look:
您不能直接使用 if 语句，但您可以使用按您想要的方式运行的三元运算符（又名条件运算符）。这是它的外观：
var testBoolean = true;
var object = {
attributeOne: "attributeOne",
attributeTwo: testBoolean ? "attributeTwo" : "attributeTwoToo"
}
回答by HieuHT
Indeed you can but why don't you do the conditional statement before assigning it to object attribute. The code would be nicer.
确实可以，但为什么不在将其分配给对象属性之前执行条件语句。代码会更好。
