我希望能夠在對(duì)象上生成動(dòng)態(tài)屬性，我嘗試通過(guò)創(chuàng)建一個(gè)函數(shù)來(lái)實(shí)現(xiàn)此目的，該函數(shù)接受一個(gè)輸入對(duì)象，然后返回一個(gè)接受參數(shù)的函數(shù)。該參數(shù)用于設(shè)置動(dòng)態(tài)屬性。我的問(wèn)題是，一旦創(chuàng)建了該函數(shù)，我似乎不會(huì)每次都獲得一個(gè)新對(duì)象，而是該函數(shù)在先前分配的對(duì)象上設(shè)置該屬性。我曾嘗試重新分配對(duì)象但無(wú)濟(jì)于事，我已經(jīng)測(cè)試了可行的替代方案（不太理想的代碼），但我想知道為什么我的初始解決方案不起作用。/* Returns a function which will assign a 'required' property to all objects within the given object */const generateSchemaField = obj => {    obj = Object.assign({}, obj);    return function(required = false) {        Object.keys(obj).forEach(key => {            Object.assign(obj[key], {                required,            });        });        return obj;    };};/* The way the above function would be invoked*/const userEmailUsingGenerateSchemaField = generateSchemaField({    user_email: {        type: 'string',        description: 'A user email',    },});/* The below function does not encounter the same problem */const userEmailNotUsingGenerateSchemaField = function(required = false) {    let obj = {        user_email: {            type: 'string',            description: 'A user email',        },    };    Object.keys(obj).forEach(key => {        Object.assign(obj[key], {            required,        });    });    return obj;}; let firstResultUsing = userEmailUsingGenerateSchemaField();let secondResultUsing = userEmailUsingGenerateSchemaField(true);console.log(firstResultUsing);console.log(secondResultUsing);預(yù)期產(chǎn)出{  user_email: { type: 'string', description: 'A user email', required: false }}{  user_email: { type: 'string', description: 'A user email', required: true }}實(shí)際{  user_email: { type: 'string', description: 'A user email', required: true }}{  user_email: { type: 'string', description: 'A user email', required: true }}