Question

考虑我有四个功能：

function first() {
  console.log("This is the first function");
}

function second() {
  console.log("This is the second function");
}

function third() {
  console.log("This is the third function");
}

function fourth(name) {
  console.log("This is the fourth function " + name);
}

我试图将上面的函数列表传递给函数：

var list_of_functions = [first, second, third, fourth];
executeFunctions(list_of_functions);

这是executeFunction：

function executeFunctions(list_of_functions) {
  console.log("inside new executeFunctions");
  list_of_functions.forEach(function(entry) {
    entry();
  });
}

如何在数组本身中传递fourth函数的name参数？有没有办法做到这一点？

例如，我想做这样的事情：

var list_of_functions = [first, second, third, fourth("Mike")];

显然，上述说法是错误的。有没有办法做到这一点？

Answer 1

您可以使用bind功能：

var list_of_functions = [first, second, third, fourth.bind(this, "Mike")];

bind的第一个参数是您希望this位于fourth函数内（可以是this，null或任何其他对象）。

Answer 2

用另一个功能

包裹它

var list_of_functions = [first, second, third, function(){return fourth('Mike');}];

Javascript中回调数组的不同参数

2 个答案: