It's a good start, congratulations.-----about sort ()

Feel that I have lived for the rest of my life never wrote a blog, this is the first time, and is not a note is to learn, first congratulate himself, there is a very good beginning, no matter can not give up, anyway is to learn to do something.

This time there is a home, 1:30 will also do not know what to write, anyway, but also record some things, casually write it.

var arr = [{name: "A", Age:16},{name: "B", Age:106},{name: "C", Age:20},{name: "D", age:23}];

Sort by age name, which ultimately requires output a,c,d,b;

Final completion

<script>var arr = [{name: "A", Age:16},{name: "B", Age:106},{name: "C", Age:20},{name: "D", age:23}]; Arr.sort (function(A, b) {return a.age>b.age;});  for (var i=0;i<arr.length;i++) {    console.log (arr[i].name)}</script>

Actually knew sort () has the sorting function, but did not expect to be able to use this

Analysis:

If you sort an array, it's usually written like this.

var arr=[1,3,2,4,5];arr.sort (); Console.log (arr);

I'll make it better.

var arr=[1,3,2,4,5];arr.sort (function(b) {return A-B}); Console.log (arr) ;

After listening to lectures to know, at the beginning of the time is so written, in fact, in order to take two numbers to compare the size

var arr=[1,103,2,4,5];arr.sort (functionif(a<b) {            return -1elseif(a>b) {     return 1  Else {     return 0;}}); Console.log (arr);

Only, return-1, can also be written -5,-0.5 ... any negative number can be

After changing to a-B, a negative number can be an integer or 0

　　

The beginning, congratulations, is a good start-----about sort ()