JavaScript: Check whether a string "Script" presents at 5th (index 4) position in a given string
JavaScript Basic: Exercise-30 with Solution
Write a JavaScript program to check whether a string "Script" presents at 5th (index 4) position in a given string, if "Script" presents in the string return the string without "Script" otherwise return the original one.
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 check whether a string “Script” presents at 5th (index 4) position in a given string, if “Script” presents in the string return the string without “Script” otherwise return the original one.</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function check_script(str)
{
if (str.length < 6) {
return str;
}
let result_str = str;
if (str.substring(10, 4) == 'Script')
{
result_str = str.substring(0, 4) + str.substring(10,str.length);
}
return result_str;
}
console.log(check_script("JavaScript"));
console.log(check_script("CoffeeScript"));
Sample Output:
Java CoffeeScript
Flowchart:
ES6 Version:
function check_script(str)
{
if (str.length < 6) {
return str;
}
let result_str = str;
if (str.substring(10, 4) == 'Script')
{
result_str = str.substring(0, 4) + str.substring(10,str.length);
}
return result_str;
}
console.log(check_script("JavaScript"));
console.log(check_script("CoffeeScript"));
Live Demo:
See the Pen JavaScript: check if a string Script presents at 5th position - ex-30 by w3resource (@w3resource) on CodePen.
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Previous: Write a JavaScript program to check if three given integer values are in the range 50..99.
Next: Write a JavaScript program to find the largest of three given integers.
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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
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