简介
在这个实验中,我们将探索在数组中找到满足给定条件的最后 n
个元素的概念。我们将学习如何使用 for
循环遍历数组,并对每个元素执行提供的函数。我们还将学习如何使用 Array.prototype.unshift()
方法将匹配的元素添加到结果数组的开头,并在达到所需长度后返回该数组。
Skills Graph
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flowchart RL
javascript(("`JavaScript`")) -.-> javascript/BasicConceptsGroup(["`Basic 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/cond_stmts("`Conditional Statements`")
javascript/BasicConceptsGroup -.-> javascript/loops("`Loops`")
javascript/BasicConceptsGroup -.-> javascript/array_methods("`Array Methods`")
javascript/BasicConceptsGroup -.-> javascript/obj_manip("`Object Manipulation`")
subgraph Lab Skills
javascript/variables -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/data_types -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/arith_ops -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/comp_ops -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/cond_stmts -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/loops -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/array_methods -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
javascript/obj_manip -.-> lab-28307{{"`查找最后 N 个匹配项`"}}
end