//过滤请求参数中的空字符串,null,undefined和空对

某字段没有值的时候 后端要求直接干掉此字段，估写了个方法对数据进行处理

//过滤请求参数中的空字符串,null,undefined和空对象
const searchData = {
    job: 'teacher',
    name: '',
    age: null,
    sex: undefined,
    hobby: [],
    under_take_count: {
        target_type: 0,
        target_count_from: '',
        target_count_end: '',
    },
    under_take: {
        target_count_from: '',
        target_count_end: '',
    },
};
function handleData(data) {
    const keys = Object.keys(data);
    if (keys.length > 0) {
        keys.forEach(currentKey => {
            const currentVal = data[currentKey];
            //处理值为对象的结构
            if (!Array.isArray(currentVal) && (currentVal instanceof Object) && Object.keys(currentVal).length > 0) {
                const objeVal = handleData(currentVal);
                if (Object.keys(objeVal).length > 0) {
                    data[currentKey] = objeVal;
                } else {
                    //删除空对象
                    delete data[currentKey];
                }
            } else {
                if (['', null, undefined].includes(currentVal)) {
                    delete data[currentKey]
                }
            }
        })
    }
    return data;
};
console.log(handleData(searchData));

//群里大佬说用for in 直接处理然后赋值给新的json
const searchData2 = {
    job: 'teacher',
    name: '',
    age: null,
    sex: undefined,
    hobby: [],
    under_take_count: {
        target_type: 0,
        target_count_from: '',
        target_count_end: '',
    },
    under_take: {
        target_count_from: '',
        target_count_end: '',
    },
};

function handleData2(data) {
    const newData = {};
    for (key in data) {
        // ***** if 判断一下子解决了 null undefined ''三种情况，可是也会把值为0的过滤掉
        if (data[key]) {
            //处理值为对象的结构
            if (!Array.isArray(data[key]) && (data[key] instanceof Object) && Object.keys(data[key]).length > 0) {
                const objeVal = handleData2(data[key]);
                if (Object.keys(objeVal).length > 0) {
                    newData[key] = objeVal;
                } else {
                    //删除空对象
                    delete newData[key];
                }
            } else {
                newData[key] = data[key]
            }
        }
    }
    return newData;
}
console.log(handleData2(searchData2));