Page 210 - Web Applications (803) Class 12
P. 210
Output of the preceding program is as follows:
Practice Question 3:
<html>
<body>
<h2>JavaScript Functions</h2>
<p>Function to display the average of all numbers of an array</p>
<script>
function Display_avg(arr1) {
var sum=0;
var leng=arr1.length;
for(i=1;i<leng;i++)
sum=sum+arr1[i];
return(sum/leng)
}
const arr1=[18,26,45,34,78];
var ans=Display_avg(arr1);
document.write("The average is " +ans);
</script> </body> </html>
Output of the preceding program is as follows:
Write a code in JavaScript to initialise a string. The program should:
* Display length of the string
* Print the string in upper case
* Print the first two characters of the string
* Print the string in reverse order [CBSE SAMPLE PAPER 2020]
Write code in JavaScript to send a string to a function as argument. The function should display the first
occurrence of the word “the” in the string.
208 Touchpad Web Applications-XII

