How to greet people differently by using JavaScript
By Saurabh SinghHello friends, In this JavaScript tutorial, I will show you how to greet people differently according to the first letter of their name. I hope this is going to be very much useful. Here we are going to create our custom JavaScript function to perform this task.
In the example below, we are greeting people using JavaScript.
Greet People in JavaScript
var speakWord = "Hello";
function speak(name) {
console.log(speakWord + " " + name);
}
var speakWord = "Good Bye";
function speak(name) {
console.log(speakWord + " " + name);
}
(function() {
var names = ["Rishabh", "John", "jen", "Jason",
"Shubham", "Bahu", "Divyesh", "Prajwal", "Priyesh", "jim"];
for (var i = 0; i < names.length; i++) {
var firstLetter = names[i].charAt(0).toLowerCase();
if (firstLetter === 'j') {
byeSpeaker(names[i]);
function byeSpeaker(names) {
console.log("Good Bye " + names);
}
}
else {
helloSpeaker(names[i]);
function helloSpeaker(names) {
console.log("Hello " + names);
}
}
}
}
)();Let’s try understanding the above program step by step :
- In the code, I have taken four variables –
speakWord,names,firstLetterandi. - In
speakWord, there are two strings one is “Hello” and another one is “Good Bye”. - In names, we have taken some strings, here we are taking few names as a variable.
- In
firstLetter, at first, we are changing the first letter to lower case and then we are checking if it is ‘j’ or not. - i is an integer. we are using i to set a condition.
- In the code there are three functions
speak(),helloSpeakerandbyeSpeaker. - speak(), it just prints the Hello or Good Bye and the names according to the condition.
- In helloSpeaker, after checking the condition that the first letter does not start from ‘J’ or ‘j’ it prints the string which says Hello + name.
- In byeSpeaker, after checking the condition that the first letter is from ‘J’ or ‘j’ it prints the string which says Good Bye + name.
To check the output go to the console and check it.
( for chrome -> right click -> inspect element -> console tab )
Output:
Hello Rishabh Good Bye John Good Bye jen Good Bye Jason Hello Shubham Hello Bahu Hello Divyesh Hello Prajwal Hello Priyesh Good Bye jim
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Good it’s working