Implementation method of using recursive traversal object to obtain value value

Generally, recursion is used to determine whether the object is the same as the parent type.

Here we demonstrate simple object recursion, and array recursion is similar.

 var obj = { a:{w:1,y:2,x:3}, b:{s:4,j:5,x:6}, c:{car:7,cat:8,mao:9}}function f(s){ for(var i in s){ if(typeof s[i]=="object"){ f(s[i]) }else{ console.log(s[i]); } }}f(obj);

Return results: 1,2,3,4,5,6,7,8,9

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