相关疑难解决方法(0)

我正在尝试不使用IIFE模式（将函数定义放在括号内）立即调用函数。在这里，我看到两种情况：

1. When a function declaration is invoked immediately: gives SyntaxError.

2. When a function expression is invoked immediately: executes successfully.

Example 1: gives SyntaxError

//gives `SyntaxError`
function() {
    console.log('Inside the function');
}();

Example 2: Executes without any error

// Executes without any error
var x = function() {console.log('Inside the function')}(); // Inside the function

So, I have these doubts:

• With this approach, why does it give an error for function declaration but not for function expression?
• Is there …