for example, the following code:
<script type="text/javascript">
function sortNumber(a,b) {
return a - b
}
var arr = new Array(6)
arr[0] = "10"
arr[1] = "5"
arr[2] = "40"
arr[3] = "25"
arr[4] = "1000"
arr[5] = "1"
document.write(arr + "<br />")
document.write(arr.sort(sortNumber))
</script> the result of execution is:
10, code 5, 40, 50, 50, 000, 1
1, 5, 10, 25, 40, 1000
Why is the result of the second line output ascending rather than descending? What do the an and b in sortNumber stand for, respectively? The value of amurb should not be fixed, how to pass it into sort and how to judge the sort? Hope to give a detailed explanation, thank you!