function makeIterator(array){ var nextIndex=0; return { next:function(){ // The value attribute represents the value of the current member, and the done attribute is a Boolean value indicating whether the traversal is complete. return nextIndex<array.length? {value:array[nextIndex],done:false}:{value:undefined,done:true}; } }; } ——————— Author: qq_41805715 Source: CSDN The original:Blog.csdn.net/qq_41805715… Copyright notice: This article is the blogger’s original article, reprint please attach the blog link!
