javascript - 如何使用不同的变量重用闭包

我想重用功能sayMyName，但使用不同的变量。请让我知道我是否以错误的方式构建了这种结构，什么是最佳实践？

var sayMyName = function(myName) {
  console.log(myName)
};

var name1 = function() {
  // myName should not be a global variable
  // because there may be more variables/functions
  // that I'd want to closed inside sayMyName().
  // Declaring all of them to the global scope is not ideal.
  var myName = 'Walter';

  sayMyName();
  // I don't want to pass in myName as argument like this:
  // sayMyName(myName);
  // I want myName to be implicitly included in sayMyName()
  // I want to pass in everything that is declared in name1 to sayMyName() implicitly.
};

var name2 = function() {
  var myName = 'White';
  sayMyName();
}

name1(); // should give me 'Walter'
name2(); // should give me 'White'

最佳答案

我不确定您为什么特别想要闭包，但是通过查看您的示例，似乎绑定比闭包更合适。

var sayMyName = function(myName) {
  console.log(myName)
};

var name1 = sayMyName.bind(undefined, 'Walter');
var name2 = sayMyName.bind(undefined, 'White');

name1(); // log 'Walter'
name2(); // log 'White'