How to use Js sort_javascript skills

The parameter in array.sort() in javascript needs to be passed in a function, and it must be a function.

The x and y represent the two objects in the array.

It should be noted that there are only three return types: negative integer, zero, positive integer

It is generally customary to use -1 0 1 to represent

There is also a little trick , if you only need to compare one attribute, such as age here, then the entire sorting method is only one sentence

Copy code The code is as follows:

function a(x,y){
return x.age-y.age;
}