How to use the keysIn function from lodash
Find comprehensive JavaScript lodash.keysIn code examples handpicked from public code repositorys.
lodash.keysIn is a method in the Lodash library that returns an array of all the enumerable properties of an object and its prototype chain.
235 236 237 238 239 240 241 242 243 244module.exports.kebabCase = _.kebabCase; module.exports.keep = _.keep; module.exports.keepIndexed = _.keepIndexed; module.exports.keyBy = _.keyBy; module.exports.keys = _.keys; module.exports.keysIn = _.keysIn; module.exports.kv = _.kv; module.exports.last = _.last; module.exports.lastIndexOf = _.lastIndexOf; module.exports.lowerCase = _.lowerCase;
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GitHub: mdmarufsarker/lodash
674 675 676 677 678 679 680 681 682 683 684 685 686console.log(invoke); // => [2, 3] const keys = _.keys({ 'a': 1, 'b': 2 }); console.log(keys); // => ['a', 'b'] const keysIn = _.keysIn({ 'a': 1, 'b': 2 }); console.log(keysIn); // => ['a', 'b'] const mapKeys = _.mapKeys({ 'a': 1, 'b': 2 }, (value, key) => key + value); console.log(mapKeys); // => { 'a1': 1, 'b2': 2 }
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How does lodash.keysIn work?
lodash.keysIn is a method in the Lodash library that returns an array of all the enumerable properties of an object and its prototype chain. When you call lodash.keysIn(object), it returns an array of strings that represent the names of all enumerable properties of object, including properties from its prototype chain. For example, given the following code: javascript Copy code {{{{{{{ function Person() { this.name = 'John'; this.age = 30; } Person.prototype.city = 'New York'; const john = new Person(); console.log(_.keysIn(john)); The lodash.keysIn method will return an array containing the strings "name", "age", and "city". This is because the john object has two own properties, name and age, and one inherited property, city, from its prototype chain. Note that lodash.keysIn returns all enumerable properties, including those on the object's prototype chain. To only return own properties of an object, you can use lodash.keys instead. Overall, lodash.keysIn is a useful method in the Lodash library that allows you to retrieve an array of all the enumerable properties of an object, including those on its prototype chain. This can be helpful for inspecting the properties of complex objects, or for iterating over all properties of an object.
GitHub: Mark-Panda/eggFormal
67 68 69 70 71 72 73 74 75 76if (!_.isObjectLike(params)) { result.error = '校验错误:待校验参数不是一个可解析的对象'; return result; } //根据校验规则逐个检查参数 const keys = _.keysIn(rules); for (let key in rules) { let param = params[key]; let rule = rules[key]; //如果缺少参数并且有默认值则填充默认值，默认值不需要验证
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Ai Example
1 2 3 4 5 6 7 8 9 10 11 12const _ = require("lodash"); function Person() { this.name = "John"; this.age = 30; } Person.prototype.city = "New York"; const john = new Person(); console.log(_.keysIn(john)); // Output: ["name", "age", "city"]
In this example, we first import the Lodash library. We then define a Person constructor function that has two own properties, name and age, and an inherited property, city, which is defined on its prototype chain. We then create a new john object by calling new Person(). We call _.keysIn(john) to get an array of all the enumerable properties of john, which includes both own properties and inherited properties. When the code is run, the output will be an array containing the strings "name", "age", and "city". This is because john has two own properties, name and age, and one inherited property, city, from its prototype chain. Overall, lodash.keysIn is a useful method in the Lodash library that allows you to retrieve an array of all the enumerable properties of an object and its prototype chain.
lodash.get is the most popular function in lodash (7670 examples)