Commonly used methods for arrays in js

This article mainly shares with you the commonly used methods of arrays in js, hoping to help everyone.

arage.sort() is used directly and the default is ascending order.

Please note that

This only shows that sort can only Recognizing the first unicode character at the beginning still cannot perform ascending order operations

For true ascending order, you must use another form of sort

arage.sort(function(x,y){

return x-y;

})

The real descending order is just to reverse x and y and subtract them It’s

arrage.sort(function(x.y    ){
    return y-x;
})

concat This is the fusion of arrays, an array of two people--and an array of 4

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