/lodash_guide/
Lodash _.isWeakMap
  1. Lodash 简介
    1. Lodash 介绍
  2. Lodash 数组
    1. Lodash _.chunk
    2. lodash _.compact
    3. lodash _.concat
    4. lodash _.difference
    5. lodash _.differenceBy
    6. lodash _.differenceWith
    7. Lodash _.drop
    8. Lodash _.dropRight
    9. Lodash _.dropRightWhile
    10. Lodash _.dropWhile
    11. Lodash _.fill
    12. Lodash _.findIndex
    13. Lodash _.findLastIndex
    14. Lodash _.first->head
    15. Lodash _.flatten
    16. Lodash _.flattenDeep
    17. Lodash _.flattenDepth
    18. Lodash _.fromPairs
    19. Lodash _.indexOf
    20. Lodash _.initial
    21. Lodash _.intersection
    22. Lodash _.intersectionBy
    23. Lodash _.intersectionWith
    24. Lodash _.join
    25. Lodash _.last
    26. Lodash _.lastIndexOf
    27. Lodash _.nth
    28. Lodash _.pull
    29. Lodash _.pullAll
    30. Lodash _.pullAllBy
    31. Lodash _.pullAllWith
    32. Lodash _.pullAt
    33. Lodash _.remove
    34. Lodash _.reverse
    35. Lodash _.slice
    36. Lodash _.sortedIndex
    37. Lodash _.sortedIndexBy
    38. Lodash _.sortedIndexOf
    39. Lodash _.sortedLastIndex
    40. Lodash _.sortedLastIndexBy
    41. Lodash _.sortedLastIndexOf
    42. Lodash _.sortedUniq
    43. Lodash _.sortedUniqBy
    44. Lodash _.tail
    45. Lodash _.take
    46. Lodash _.takeRight
    47. Lodash _.takeRightWhile
    48. Lodash _.takeWhile
    49. Lodash _.union
    50. Lodash _.unionBy
    51. Lodash _.unionWith
    52. Lodash _.uniq
    53. Lodash _.uniqBy
    54. Lodash _.uniqWith
    55. Lodash _.unzip
    56. Lodash _.unzipWith
    57. Lodash _.without
    58. Lodash _.xor
    59. Lodash _.xorBy
    60. Lodash _.xorWith
    61. Lodash _.zip
    62. Lodash _.zipObject
    63. Lodash _.zipObjectDeep
    64. Lodash _.zipWith
  3. Lodash 集合
    1. Lodash _.countBy
    2. Lodash _.Each->forEach
    3. Lodash _.Eachright->forEachRight
    4. Lodash _.every
    5. Lodash _.filter
    6. Lodash _.find
    7. Lodash _.findLast
    8. Lodash _.flatMap
    9. Lodash _.flatMapDeep
    10. Lodash _.flatMapDepth
    11. Lodash _.groupBy
    12. Lodash _.includes
    13. Lodash _.invokeMap
    14. Lodash _.keyBy
    15. Lodash _.map
    16. Lodash _.orderBy
    17. Lodash _.partition
    18. Lodash _.reduce
    19. Lodash _.reduceRight
    20. Lodash _.reject
    21. Lodash _.sample
    22. Lodash _.sampleSize
    23. Lodash _.shuffle
    24. Lodash _.size
    25. Lodash _.some
    26. Lodash _.sortBy
  4. Lodash 函数
    1. Lodash _.after
    2. Lodash _.ary
    3. Lodash _.before
    4. Lodash _.bind
    5. Lodash _.bindKey
    6. Lodash _.curry
    7. Lodash _.curryRight
    8. Lodash _.debounce
    9. Lodash _.defer
    10. Lodash _.delay
    11. Lodash _.flip
    12. Lodash _.memoize
    13. Lodash _.negate
    14. Lodash _.once
    15. Lodash _.overArgs
    16. Lodash _.partial
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    18. Lodash _.rearg
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    22. Lodash _.unary
    23. Lodash _.wrap
  5. Lodash 语言
    1. Lodash _.castArray
    2. Lodash _.clone
    3. Lodash _.cloneDeep
    4. Lodash _.cloneDeepWith
    5. Lodash _.cloneWith
    6. Lodash _.conformsTo
    7. Lodash _.eq
    8. Lodash _.gt
    9. Lodash _.gte
    10. Lodash _.isArguments
    11. Lodash _.isArray
    12. Lodash _.isArrayBuffer
    13. Lodash _.isArrayLike
    14. Lodash _.isArrayLikeObject
    15. Lodash _.isBoolean
    16. Lodash _.isBuffer
    17. Lodash _.isDate
    18. Lodash _.isElement
    19. Lodash _.isEmpty
    20. Lodash _.isEqual
    21. Lodash_.isEqualWith
    22. Lodash _.isError
    23. Lodash _.isFinite
    24. Lodash _.isFunction
    25. Lodash _.isInteger
    26. Lodash _.isLength
    27. Lodash _.isMap
    28. Lodash _.isMatch
    29. Lodash _.isMatchWith
    30. Lodash _.isNaN
    31. Lodash _.isNative
    32. Lodash _.isNil
    33. Lodash _.isNull
    34. Lodash _.isNumber
    35. Lodash _.isObject
    36. Lodash _.isObjectLike
    37. Lodash _.isPlainObject
    38. Lodash _.isRegExp
    39. Lodash _.isSafeInteger
    40. Lodash _.isSet
    41. Lodash _.isString
    42. Lodash _.isSymbol
    43. Lodash _.isTypedArray
    44. Lodash _.isUndefined
    45. Lodash _.isWeakMap
    46. Lodash _.isWeakSet
    47. Lodash _.lt
    48. Lodash _.lte
    49. Lodash _.toArray
    50. Lodash _.toFinite
    51. Lodash _.toInteger
    52. Lodash _.toLength
    53. Lodash _.toNumber
    54. Lodash _.toPlainObject
    55. Lodash _.toSafeInteger
    56. Lodash _.toString
  6. Lodash 数学
    1. Lodash _.add
    2. Lodash _.ceil
    3. Lodash _.divide
    4. Lodash _.floor
    5. Lodash _.max
    6. Lodash _.maxBy
    7. Lodash _.mean
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    11. Lodash _.multiply
    12. Lodash _.round
    13. Lodash _.subtract
    14. Lodash _.sum
    15. Lodash _.sumBy
  7. Lodash 数字
    1. Lodash _.clamp
    2. Lodash _.inRange
    3. Lodash _.random
  8. Lodash 对象
    1. Lodash _.assign
    2. Lodash _.assignWith
    3. Lodash _.at
    4. Lodash _.create
    5. Lodash _.defaults
    6. Lodash _.defaultsDeep
    7. Lodash _.entries->toPairs
    8. Lodash _.entriesln->toPairsIn
    9. Lodash _.extend->assignIn
    10. Lodash _.extendWith->assignInWith
    11. Lodash _.findKey
    12. Lodash _.findLastKey
    13. Lodash _.forIn
    14. Lodash _.forInRight
    15. Lodash _.forOwn
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    17. Lodash _.functions
    18. Lodash _.functionsIn
    19. Lodash _.get
    20. Lodash _.has
    21. Lodash _.hasIn
    22. Lodash _.invert
    23. Lodash _.invertBy
    24. Lodash _.invoke
    25. Lodash _.keys
    26. Lodash _.keysIn
    27. Lodash _.mapKeys
    28. Lodash _.mapValues
    29. Lodash _.merge
    30. Lodash _.mergeWith
    31. Lodash _.omit
    32. Lodash _.omitBy
    33. Lodash _.pick
    34. Lodash _.pickBy
    35. Lodash _.result
    36. Lodash _.set
    37. Lodash _.setWith
    38. Lodash _.transform
    39. Lodash _.unset
    40. Lodash _.update
    41. Lodash _.updateWith
    42. Lodash _.values
    43. Lodash _.valuesIn
  9. Lodash Seq
    1. Lodash _
    2. Lodash _.chain
    3. Lodash _.tap
    4. Lodash _.thru
    5. Lodash _.prototype
    6. Lodash _.prototype.at
    7. Lodash _.prototype.chain
    8. Lodash _.prototype.commit
    9. Lodash _.prototype.next
    10. Lodash _.prototype.plant
    11. Lodash _.prototype.reverse
    12. Lodash _.prototype.value
    13. Lodash _.prototype.toJSON->value
    14. Lodash _.prototype.valueOf->value
  10. Lodash 字符串
    1. Lodash _.camelCase
    2. Lodash _.capitalize
    3. Lodash _.deburr
    4. Lodash _.endsWith
    5. Lodash _.escape
    6. Lodash _.escapeRegExp
    7. Lodash _.kebabCase
    8. Lodash _.lowerCase
    9. Lodash _.lowerFirst
    10. Lodash _.pad
    11. Lodash _.padEnd
    12. Lodash _.padStart
    13. Lodash _.parseInt
    14. Lodash _.repeat
    15. Lodash _.replace
    16. Lodash _.snakeCase
    17. Lodash _.split
    18. Lodash _.startCase
    19. Lodash _.startsWith
    20. Lodash _.template
    21. Lodash _.toLower
    22. Lodash _.toUpper
    23. Lodash _.trim
    24. Lodash _.trimEnd
    25. Lodash _.trimStart
    26. Lodash _.truncate
    27. Lodash _.unescape
    28. Lodash _.upperCase
    29. Lodash _.upperFirst
    30. Lodash _.words
  11. Lodash 实用函数
    1. Lodash _.attempt
    2. Lodash _.bindAll
    3. Lodash _.cond
    4. Lodash _.conforms
    5. Lodash _.constant
    6. Lodash _.defaultTo
    7. Lodash _.flow
    8. Lodash _.flowRight
    9. Lodash _.identity
    10. Lodash _.iteratee
    11. Lodash _.matches
    12. Lodash _.matchesProperty
    13. Lodash _.method
    14. Lodash _.methodOf
    15. Lodash _.mixin
    16. Lodash _.noConflict
    17. Lodash _.noop
    18. Lodash _.nthArg
    19. Lodash _.over
    20. Lodash _.overEvery
    21. Lodash _.overSome
    22. Lodash _.property
    23. Lodash _.propertyOf
    24. Lodash _.range
    25. Lodash _.rangeRight
    26. Lodash _.runInContext
    27. Lodash _.stubArray
    28. Lodash _.stubFalse
    29. Lodash _.stubObject
    30. Lodash _.stubString
    31. Lodash _.stubTrue
    32. Lodash _.times
    33. Lodash _.toPath
    34. Lodash _.uniqueId
  12. Lodash Properties
    1. Lodash _.VERSION
    2. Lodash _.templateSettings
    3. Lodash _.templateSettings.escape
    4. Lodash _.templateSettings.evaluate
    5. Lodash _.templateSettings.imports
    6. Lodash _.templateSettings.interpolate
    7. Lodash _.templateSettings.variable
  13. Lodash Methods
    1. Lodash _.templateSettings.imports.
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Lodash _.isWeakMap

2021-09-22 10:19:10 更新

_.isWeakMap(value) 

检查 value 是否是 WeakMap 对象。

添加版本

4.3.0

参数

  1. value (*): 要检查的值。

返回

(boolean): 如果 value 为一个 WeakMap 对象 ，那么返回 true，否则返回 false。

例子

_.isWeakMap(new WeakMap);// => true
 _.isWeakMap(new Map);
// => false


← Lodash _.isUndefined
Lodash _.isWeakSet →

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