The Lodash method named _.isEmpty() is used to check whether a value is an empty object, set, or collection, map . When it comes to objects, they are deemed empty only if they lack any of their own enumerable string keyed properties. As for collections, they are considered empty if t...
在这个示例中,我们首先导入了lodash库。然后,我们在if语句中使用_.isEmpty()函数检查elementToAdd是否为空。如果为空,我们将其添加到array中。 请注意,_.isEmpty()检查的不仅仅是空字符串,它还可以检查其他“空值”,例如null、undefined和空对象{}。如果你只想检查空字符串,可以使用elementToAdd === '...
其中第一个参数接收3个参数第一个参数是当前值，第二个参数是当前值的索引值，第三个参数是本数组。s...
Made _.max & _.min return undefined when passed an empty array Made _.words chainable by default Moved ./lodash.js to ./dist/lodash.js in the master branch Moved ./index.js to ./lodash.js in the npm branch Removed isDeep params from _.clone & _.flatten Removed multiValue param ...
_.isArray _.isBoolean _.isDate _.isElement _.isEmpty _.isEqual _.isFinite _.isFunction _.isNaN _.isNull _.isNumber _.isObject _.isPlainObject _.isRegExp _.isString _.isUndefined _.keys _.mapValues _.merge _.methods -> functions _.omit _.pairs _.pick _.transform _.values Uti...
requiredArray = values => { return !isEmpty(values) ? undefined : <FormattedMessage id="stripes-data-transfer-components.validation.enterValue" />; }Example #29Source File: sagaInjectors.js From hackchat-client with Do What The F*ck You Want To Public License 5 votes checkKey = (key) ...
* @returns {boolean} Returns `true` if any element passes the predicate check, * else `false`.*///类似于数组的some方法functionarraySome(array, predicate) {varindex = -1,//循环索引length = array ? array.length : 0;//数组长度while(++index < length) {//循环调用传入的回调函数,参数是值...
isArrayLike.js isArrayLikeObject.js isBoolean.js isBuffer.js isDate.js isElement.js isEmpty.js isEqualWith.js isError.js isFunction.js isLength.js isMap.js isMatch.js isMatchWith.js isNative.js isNil.js isNull.js isNumber.js isObject.js ...
isArray /** * Checks if `value` is classified as an `Array` object. * * @static * @memberOf _ * @since 0.1.0 * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is an array, else `false`. * @example * * _.isArray...
isArray(command.alias) || isEmpty(command.alias)) { console.error(`Invalid command at ${path}; 'alias' is undefined, not an array, or empty.`); return false; } if (!command.handler || typeof command.handler !== 'function') { console.error(`Invalid command at ${path}; 'handler...