JavaScript/Counter-Controlled-Repetation.html at master · eliCoding/JavaScript · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
<!DOCTYPE html>
<!--
Develped by: Elmria
Script Date:
Average using counter controlled repetition structure
-->
<html>
<head>
<title>Class Average</title>
<metacharset="utf-8">
<metaname="viewport" content="width=device-width, initial-scale=1.0">
<scripttype = "text/javascript">
//1. Declaration Phase
vartotal;//sum of grades
vargradeCounter,//number of grades enteres=d
grade,//grade typed by a user (as a string)
gradeValue,//grade value converted to number
average;//average of all grades
vargradeNumber=1;//prepare for loop

//2. Initialization

total=0;//cleas the total
gradeCounter=1;//prepare for loop

// 3. processing
//peompt the use to enter the grade number
gradeNumber=window.prompt("How many grades you want ot ener? ==>Numbers:","0");//we can use the parse Int here too
//cause the grade number is string we have to parse
gradeNumber=parseInt(gradeNumber);
while(gradeCounter<=gradeNumber){
window.alert("I'm here");
//Prompt for input and readgrade from user
grade=window.prompt("Enter a grade:","0");

//convert the grade from the String to a number(parseInt or parseFloat)
gradeValue=parseFloat(grade);

//add grade value to total

total=total+gradeValue;
//add one to grade counter
gradeCounter++;
}//end while loop
//4. Termination Phase
average=total/gradeNumber;//canculate the average

//Display the average of exam grades
document.writeln("<h2> The class average is: "+average.toFixed(3)+"</h1>");//toFixed or toPrecision


</script>
</head>
<body>
<div></div>
</body>
</html>