將 arguments 傳遞給回調 function

Question

我想將附加參數傳遞給回調 function

function x(logic){
return logic();
}
x(sum, 5, 2);
function sum(){
console.log('sum is ', a + b);
}

Answer 1

我的問題已通過 .apply() 方法解決

function x(logic, params){
return logic.apply(null, params);
}

let sum = (a, b) => console.log('sum is', a + b);
let sub = (a, b) => console.log('sub is', a - b)
let multi = (a, b) => console.log('multy is', a * b)
let div = (a, b) => console.log('div is', a / b)

x(sum, [7, 5]);
x(sub, [7, 5]);
x(multi, [7, 5]);
x(div, [7, 5]);