lodash.isempty v4.4.0 Thelodashmethod_.isEmptyexported as aNode.jsmodule. Installation Using npm: $ {sudo -H} npm i -g npm $ npm i --save lodash.isempty In Node.js: varisEmpty=require('lodash.isempty'); See thedocumentationorpackage sourcefor more details. ...
Examplevar _ = require('lodash'); console.log(_.isEmpty(1)); console.log(_.isEmpty([1, 2, 3])); Save the above program in tester.js. Run the following command to execute this program.Command\>node tester.js Outputtrue false Print Page Previous Next ...
Lodash 是一个现代 JavaScript 实用程序库,可以使用非常基本的语法执行许多 JavaScript 功能。 例如,如果你想检查一个对象是否为空,你只需要使用“isEmpty”方法。 _.isEmpty(objectName); 将Lodash 安装到您的项目中非常简单。您所要做的就是使用这个命令: $ npm install lodash 您现在可以初始化下划线方法并使用...
value.size }if(isPrototype(value)) {//如果value是原型对象,就判断是否自身可枚举字符串键属性长度为0return!Object.keys(value).length }for(const keyinvalue) {//否则用for in循环,如果有自身可枚举属性存在,返回false,否则返回trueif(hasOwnProperty.call(value, key)) {returnfalse} }returntrue} export...
constobj={[Symbol('a')]:1} when I call_.isEmpty(obj), it returntrue; Have you considered usingReflect.ownKeys()to solve this problem? dev-davidyoon commentedon Aug 26, 2023 dev-davidyoon Checks empty object if it has property Symbollodash/lodash...
Why another lodash? Lodash is great. In fact, this project uses lodash sometimes! The problems I face are... Lodash is not verbose enough - Example: I like to use the function isNil from lodash to find if a value is null or undefined. Well, when I use this function name, isNil, I...
lodash.isEmpty() 还支持判断 Map/Set 类型,其 size 为 0 则返回 true。而 licia.isEmpty() 不支持的,不管 size 是否为 0 均返回 true。 源码: // https://github.com/liriliri/licia/blob/master/src/isEmpty.js_('isArrLike isArr isStr isArgs keys');exports=function(val){if(val==null)re...
A. Yes B. No C. Only for specific types D. Depends on Lodash version Show Answer 5. Is Lodash's isSet method part of the core JavaScript features? A. Yes B. No C. Only in ES6 D. Only in Node.js Show Answer Print...
The lodash method `_.isEmpty` exported as a module.. Latest version: 4.4.0, last published: 9 years ago. Start using lodash.isempty in your project by running `npm i lodash.isempty`. There are 1278 other projects in the npm registry using lodash.isempty.
Lodash - Discussion 0 - This is a modal window. No compatible source was found for this media. var_=require('lodash');console.log(_.isSet(newSet));console.log(_.isSet(newWeakSet)); Save the above program intester.js. Run the following command to execute this program. ...