你可以使用R. reject（或R. filter）通过回调函数从对象中移除属性：

const obj = {
  matrimonyUrl: 'christian-grooms',
  search_criteria:
    'a:2:{s:6:"gender";s:4:"Male";s:9:"community";s:9:"Christian";}',
  mothertongue: null,
  religion: 'Christian',
  caste: '',
  country: null
};

const result = R.reject(R.equals(''))(obj);

console.log(result);

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.js"></script>

我是这样做的，但我还需要排除可空值，而不仅仅是空值。

const obj = { a: null, b: '',  c: 'hello world' };

const newObj = R.reject(R.anyPass([R.isEmpty, R.isNil]))(obj);

〈---之后仅显示C

newObj = { c: 'hello world' }

基本上拒绝就像过滤器，但不包括结果。做过滤器（不（...），项目）如果我的任何条件通过它将拒绝特定的关键字。
希望能帮上忙！

你可以使用纯javascript吗？（没有Ramda）
如果确实需要从对象中删除属性，可以使用delete operator。

for (const key in obj) {
    if (obj[key] === "") {
        delete obj[key];
    }
}

如果您喜欢一行程序：

Object.entries(obj).forEach(e => {if (e[1] === "") delete obj[e[0]]});

reject(complement(identity))
({
  matrimonyUrl: 'christian-grooms',
  search_criteria:
    'a:2:{s:6:"gender";s:4:"Male";s:9:"community";s:9:"Christian";}',
  mothertongue: null,
  religion: 'Christian',
  caste: '',
  country: null
})

{"matrimonyUrl": "christian-grooms",
"religion": "Christian", 
"search_criteria": "a:2:{s:6:\"gender\";s:4:\"Male\";s:9:\"community\";s:9:\"Christian\";}"
}

如果你想要一个纯javascript答案：

const obj = {
  matrimonyUrl: 'christian-grooms',
  search_criteria:
    'a:2:{s:6:"gender";s:4:"Male";s:9:"community";s:9:"Christian";}',
  mothertongue: null,
  religion: 'Christian',
  caste: '',
  country: null,
};

// Iterate over obj keys
const newObj = Object.keys(obj).reduce((acc, key) => ({
  // Return the accumulator obj on every iteration
  ...acc,
  // Decide if we want to return the current {key:value} pair 
  ...(obj[key] !== '' ? { [key]: obj[key] } : {}),
// Initialize the accumulator obj
}), {});

const obj = {
  matrimonyUrl: 'christian-grooms',
  search_criteria:
    'a:2:{s:6:"gender";s:4:"Male";s:9:"community";s:9:"Christian";}',
  mothertongue: null,
  religion: 'Christian',
  caste: '',
  country: null
};

const result = R.reject(R.equals(''))(obj);

console.log(result);