Object.assign方法用于对象的合并，将源对象（o2,o3）的所有可枚举属性，复制到目标对象（o1）。
const obj = Object.assign(o1, o2, o3);
let answersList = [
{fieldName:'11',questionId:1,test:'lalal'},
{fieldName:'12',questionId:2,test:'lalal2'},
{fieldName:'113',questionId:3,test:'lalal333'}
];
let allFormAttrs = answersList.map(q => Object.assign({}, q, {
id: q.questionId,
name: q.fieldName
}));
console.info(allFormAttrs);
console.info(answersList);
