Homework SourseJavaScript 1 Write a loop that outputes the even numbers fro
JavaScript
1.) Write a loop that outputes the even numbers from 2 to x. (Assume x is larger than 2)
2.) Write code that countes the number of times a digit(i.e. one of the characters \'0\',\'1\'...\'9\' )occurs in a string named silly.(assume string exists and contains non empty string)
Solution
Question 1:
<html>
<head>
<title>
Problem 3
</title>
<script type=\"text/javascript\">
function calculate(){
x = parseInt(prompt(\"Enter the number: \"));
document.write(\"Even numbers are: \"+\"<br> \");
for(var i=2; i<=x; i+=2){
document.write(i+\" \");
}
}
</script>
</head>
<body onload=calculate()>
</body>
</html>
Output:
Even numbers are:
2 4 6 8 10 12 14 16 18 20
Question 2:
<html>
<head>
<title>
Problem 3
</title>
<script type=\"text/javascript\">
function calculate(){
var array = [0,0,0,0,0,0,0,0,0,0];
var silly = prompt(\"Enter the string: \");
for(var i=0; i<silly.length; i++){
if(silly[i] >= \'0\' && silly[i]<=\'9\'){
var n = parseInt(silly[i]);
array[n]++;
}
}
for(var i=0; i<array.length; i++){
document.write(i+\": \"+array[i]+\"<br>\");
}
}
</script>
</head>
<body onload=calculate()>
</body>
</html>
Output:
Enter a string: sss12340890776545670122erfgg
0: 3
1: 2
2: 3
3: 1
4: 2
5: 2
6: 2
7: 3
8: 1
9: 1
