add after ary assign assignIn assignInWith assignWith at before bind bindAll bindKey camelCase capitalize castArray ceil chain chunk clamp clone cloneDeep cloneDeepWith cloneWith compact concat conformsTo countBy create curry curryRight debounce deburr defaults defaultsDeep defer delay difference divide drop dropRight each eachRight endsWith entries entriesIn eq escape every extend extendWith fill filter find findIndex findKey findLast findLastIndex findLastKey first flatMap flatMapDeep flatMapDepth flatten flattenDeep flattenDepth flip floor forEach forEachRight forIn forInRight forOwn forOwnRight fromPairs functions functionsIn get groupBy gt gte has hasIn head inRange includes indexOf initial intersection invert invertBy invoke invokeMap isArguments isArray isArrayBuffer isArrayLike isArrayLikeObject isBoolean isBuffer isDate isElement isEmpty isEqual isEqualWith isError isFinite isFunction isInteger isLength isMap isMatch isMatchWith isNaN isNative isNil isNull isNumber isObject isObjectLike isPlainObject isRegExp isSafeInteger isSet isString isSymbol isTypedArray isUndefined isWeakMap isWeakSet join kebabCase keyBy keys keysIn last lastIndexOf lowerCase lowerFirst lt lte map mapKeys mapValues max maxBy mean meanBy memoize merge mergeWith min minBy multiply negate nth omit omitBy once orderBy overArgs pad padEnd padStart parseInt partial partialRight partition pick pickBy pull pullAll pullAllBy pullAllWith pullAt random rearg reduce reduceRight reject remove repeat replace rest result reverse round sample sampleSize set setWith shuffle size slice snakeCase some sortBy sortedIndex sortedIndexOf sortedLastIndex sortedLastIndexOf sortedUniq split spread startCase startsWith subtract sum sumBy tail take takeRight tap template throttle thru toArray toFinite toInteger toLength toLower toNumber toPairs toPairsIn toPlainObject toSafeInteger toString toUpper transform trim trimEnd trimStart truncate unary unescape union uniq uniqBy uniqWith unset unzip unzipWith update updateWith upperCase upperFirst values valuesIn without words wrap wrapperAt wrapperChain wrapperCommit wrapperFlatMap wrapperLodash wrapperNext wrapperPlant wrapperReverse wrapperToIterator wrapperValue xor zip zipObject zipObjectDeep zipWith

Lodash _.get

Overview

The lodash library provides a powerful utility called _.get which is used to retrieve the value of a property from an object using a provided path.

Syntax: _.get(object, path, [defaultValue])

Params:

  • object (Object): The object to query.
  • path (Array|string): The path of the property to get.
  • [defaultValue] (*): The value returned for undefined resolved values.

Returns:

  • (*): Returns the resolved value.

Example Usage:

const object = { 'a': [{ 'b': { 'c': 3 } }] };

_.get(object, 'a[0].b.c'); // => 3
_.get(object, ['a', '0', 'b', 'c']); // => 3
_.get(object, 'a.b.c', 'default'); // => 'default'
_.get(object, 'a[1].b.c', 'default'); // => 'default'

In the above example, _.get is used to retrieve the value of the property c from the object object using the provided path 'a[0].b.c'. The second example shows that the path can also be provided as an array. If the value of the property is not defined, the optional defaultValue parameter is used to return a default value.

The use of the _.get method is particularly useful when working with complex nested objects, where accessing properties directly can result in errors due to missing nested structures. Instead, _.get gracefully returns undefined if any part of the path is not found.

Overall, the _.get method is a powerful and reliable utility that should be a part of every JavaScript developer's toolkit.