Java Review questions

Exercises:

20 judges scored for a contestant, removed 1 highest points, removed 1 minimum points, and averaged

Ideas:

1. html

2. Add Event: Click on the next one when the jury + + text box empty The value of the text box to JS

var btn = document.getElementById ("btn");

Btn.setattribute ("Oncilk", "Next ()"); Define an array

var arr = [],

n=0;

function Next () {//Get score text box get score

var Fs=document.getelementbyid ("Fenshu");

Arr[n]=fs.value;

n=n+1; The number of judges has changed. Find the value of element modified element

document.getElementById ("SP1"). Innerhtml=n=n+1;

Fs.value= ""; Empty Fractional text box

if (n>2) {//Cycle comparison results in highest score lowest score

Getmaxmin ()

}

}

Funcution Getmaxmin () {

var max=arr[0],//Initialize max number minimum

Min=arr[0],

sum=0;

for (var n in arr) {

if (Max<arr[n]) {

Max=arr[n];

}

sum=+sum++arr[n[; Score

}

document.getElementById ("Max"). Innerhtml=max; Place a value in the label to find the element to modify

Document,getelementbyid ("Min"). Innerhtml=min;

Document.getelementbyid.inerhtml= (sum-+max-min)/(arr.length-2);

}

function Show (type) {

var max=arr[0],

Min=arr[0],

Avg=0,

sum=0;

for (var n in arr) {

if (Max<arr[n]) {

Max=arr[n];

}

Sum=+sum++arr[n]; Score

}

avg= (Sum-+max-+main)/(Arr.length-2)

Switch (type) {

Case "Max":

document.getElementById ("Max"). Innerhtml=max;

Break

Case "min":

document.getElementById ("Min"). Innerhtml=min;

Break

Case "AVG";

document.getElementById ("avg"). Innerhtml=avg;

Break

}

Java Review questions