防止每次我调用函数时声明空数组

Posted 2021-04-10

const someFunction = (dyanamic data) => {
    let dataArray = [];
    let dataObject = {
        name: `${dynamic data}`
    };
    dataArray.push(dataObject);
}

someFunction(dyanamic data); 

现在想像一下，每当按下按钮时就会调用某个功能，在本机中说，那么每次我如何防止此情况，dataArray都将变为空。

答案

let dataArray = [];
const someFunction = (dyanamic data) => {
    let dataObject = { name: `${dynamic data}` };
    dataArray.push(dataObject);
}

someFunction(dyanamic data);