apply：
Accepts two parameters, the first parameter is the value of this was bound to, the second parameter is a parameter array . When the first argument is null, undefined, and pointing to the default window.
call：
The first parameter is the value of this to bind to, the incoming followed by a list of parameters . When the first argument is null, undefined, and pointing to the default window.
apply and call:
In fact apply and call usage is almost the same. The only difference is that: When the function need to pass a plurality of variables, apply an array as a parameter can accept input, call it is receiving a series of individual variables.
1. First, a familiar look:
2. Secondly:
Output looks like:
Analysis: When using the call () function, bigcar car constructor which uses the attribute. It changed the point of this
3. Thirdly
result:
Analysis: The role of apply () and call () is the same, apply with projects in developing some more.
4. I added a few things:
Output:
5. Finally, to a case of it
Output:
