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The spread operator allow us to split an Array arguement into individual elements.
getRequest("/topics/17/tags", function(data){
let tags = data.tags;
displayTags(...tags); // The dispalyTags function is now receiving individual arguements , not an Array.
})
Rest and Spread look the same:
Rest parameters and the spread operator look the same, but the formeris used in function definitions and the later in function invocations.
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原文地址：http://www.cnblogs.com/Answer1215/p/5096653.html
