[英]Passing Arguments to function in javascript
I have a function(case) as below, 我有一个函数(情况)如下
let fn = (() => {
let ab = {};
let register = () => {
console.log("hello" + ab[x])
};
return (x,y) => {
ab[x] = y;
return register();
};
})();
this function is working only when I call as below, 此功能仅在我按以下方式调用时有效,
let x = 'key';
let y = 'value';
fn(x,y);
Is there any chance to call directly like 有没有机会像
fn('key', 'value');
what changes I have to make in function to call directly 我必须对函数进行哪些更改才能直接调用
The problem is your register
function doesn't know about x
. 问题是您的
register
函数不了解x
。 You need to pass it through from your previous function: 您需要通过上一个函数传递它:
let fn = (() => { let ab = {}; let register = (x) => { console.log("hello" + ab[x]) }; return (x,y) => { ab[x] = y; return register(x); }; })(); fn("key", "value");
I believe this is because you aren't defining the parameters in the functions. 我相信这是因为您没有在函数中定义参数。
let fn = ((x,y) => {
let ab = {};
let register = () => {
console.log("hello"+ab[x])};
return (x,y) => {
ab[x]=y;
return register();
};
})();
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