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Array.prototype.silce.call Comprehension Analysis _javascript Skills

Source: Internet
Author: User
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Array.prototype.slice.call (thisarg[, arg1[, arg2[, ...)]]
Member Introduction:

Array Arrays Object

prototype [Property]
is a property of an object in JavaScript that returns a prototype reference to an object that can be dynamically added to this method and attribute, such as Array,object, or a user-defined object, for details please see here

Slice [Function]
With the original array object, intercept the specified part to return a new array object, see here for details

Call [Function]call([thisObj[,arg1[, arg2[,   [,.argN]]]]])

Call one of the object's methods and replace the current object with another object, see here for details .

After each of the above understanding, and then a good understanding of

Array.prototype.slice.call (thisobj,start,end) is the Thisobj object is cut into a new array by the Call method

As follows:

<! DOCTYPE html> <ptml xmlns= "http://www.w3.org/1999/xhtml" > <pead> <meta http-equiv= "Content-type" Content= "text/html; charset=gb2312 "/> <title>call</title> <script type=" Text/javascript "> function fn () {a = Array. Prototype.slice.call (arguments,2); alert (a); FN (1,2,3,5); </script> </pead> <body> </body> </ptml>
[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]

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