Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

JavaScript: Display the city name if the string begins with "Los" or "New" otherwise return blank

JavaScript Basic: Exercise-66 with Solution

Write a JavaScript program to display the city name if the string begins with "Los" or "New" otherwise return blank.

Pictorial Presentation:

JavaScript: Display the city name if the string begins with 'Los' or 'New' otherwise return blank

Sample Solution:

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JavaScript program to display the city name  if the string begins with “Los” or “New” otherwise return blank.</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function city_name(str) {
  if (str.length >= 3 && ((str.substring(0, 3) == 'Los')
                          || (str.substring(0, 3) == 'New')))
   
      {
          return str;
    }

  return '';
}

console.log(city_name("New York"));
console.log(city_name("Los Angeles"));
console.log(city_name("London"));

Sample Output:

New York
Los Angeles

Flowchart:

Flowchart: JavaScript - Display the city name if the string begins with

ES6 Version:

function city_name(str) {
  if (str.length >= 3 && ((str.substring(0, 3) == 'Los')
                          || (str.substring(0, 3) == 'New')))
   
      {
          return str;
    }

  return '';
}

console.log(city_name("New York"));
console.log(city_name("Los Angeles"));
console.log(city_name("London"));

Live Demo:

See the Pen JavaScript - Display the city name if the string begins with "Los" or "New" otherwise return blank - basic-ex-66 by w3resource (@w3resource) on CodePen.


Contribute your code and comments through Disqus.

Previous: Write a JavaScript program to test if a string end with "Script". The string length must be greater or equal to 6.
Next: Write a JavaScript program to create a new string from a given string, removing the first and last characters of the string if the first or last character are 'P'.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04