简介
在本实验中,我们将探索如何创建一个对象,该对象以数组中的唯一值作为键,以这些值出现的频率作为值。我们将通过使用 Array.prototype.reduce()
方法来实现这一点,该方法将唯一值映射到对象的键,并在每次遇到相同值时将其添加到现有键中。通过本实验,我们将更深入地理解 reduce 方法,以及如何使用它来高效地解决编程问题。
Skills Graph
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flowchart RL
javascript(("`JavaScript`")) -.-> javascript/BasicConceptsGroup(["`Basic Concepts`"])
javascript(("`JavaScript`")) -.-> javascript/AdvancedConceptsGroup(["`Advanced Concepts`"])
javascript/BasicConceptsGroup -.-> javascript/variables("`Variables`")
javascript/BasicConceptsGroup -.-> javascript/data_types("`Data Types`")
javascript/BasicConceptsGroup -.-> javascript/arith_ops("`Arithmetic Operators`")
javascript/BasicConceptsGroup -.-> javascript/comp_ops("`Comparison Operators`")
javascript/BasicConceptsGroup -.-> javascript/array_methods("`Array Methods`")
javascript/AdvancedConceptsGroup -.-> javascript/higher_funcs("`Higher-Order Functions`")
javascript/AdvancedConceptsGroup -.-> javascript/destr_assign("`Destructuring Assignment`")
subgraph Lab Skills
javascript/variables -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
javascript/data_types -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
javascript/arith_ops -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
javascript/comp_ops -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
javascript/array_methods -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
javascript/higher_funcs -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
javascript/destr_assign -.-> lab-28689{{"`将数组唯一值映射到对象键`"}}
end