js find方法_查詢出知足條件的對象item

/*查詢出知足條件的對象item*/ const nameArr=[ {id:1,userName:"zhaoqian",age:27}, {id:2,userName:"sunli",age:23}, {id:3,userName:"zhouwu",age:25 }, {id:4,userName:"zhengwang",a

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