Write a function in js to determine whether a value is empty.
Here, special consideration should be given to the special processing when a value is 0, an empty array, or an empty object.
Note: In many cases, 0 should not be judged as empty.
export const isNull = (value) => {
if (value === 0) {
// 若不去单独处理0,0为被默认判定为空，所以这里特殊处理0为非空
return false
} else {
if (typeof value == 'object') {
// 这里单独判断空数组和空对象
if (value.length <= 0 || Object.keys(value).length <= 0) {
return true
} else {
return false
}
} else if (value === '' || value === 'undefined' || value === undefined || value === null || value === 'null') {
return true
} else {
return false
}
}
}