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:

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:

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.
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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?
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JavaScript: Tips of the Day
Returns the sum of the powers of all the numbers from start to end (both inclusive)
Example:
const sumPower = (end, power = 2, start = 1) => Array(end + 1 - start) .fill(0) .map((x, i) => (i + start) ** power) .reduce((a, b) => a + b, 0); console.log(sumPower(10)); // 385 console.log(sumPower(10, 3)); // 3025 console.log(sumPower(10, 3, 5)); // 2925
Output:
385 3025 2925
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