The split() method in JavaScript is used to split a string into an array of substrings, based on a specified separator.

Here's a simple example:

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let text = "Hello,World,How,Are,You";
let result = text.split(",");

console.log(result); // Output: ["Hello", "World", "How", "Are", "You"]

In this example, we use split(",") to divide the string text at each comma, resulting in an array of words.

You can also use it without a separator:

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let word = "Hello";
let letters = word.split("");

console.log(letters); // Output: ["H", "e", "l", "l", "o"]

In this case, split("") splits the string into individual characters.

You can read more about it in the JavaScript documentation.

To create a prompt for an array in JavaScript, you can use the prompt() method to ask the user for input and then split the input string into an array using a specific delimiter.

Here's an example code block:

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let input = prompt("Enter a list of items separated by commas:");
let array = input.split(",");

console.log(array);

In this example, the user is prompted to enter a list of items separated by commas. The split() method is then used to split the input string into an array at each comma. The resulting array is then logged to the console.

For instance, if the user entered "apple, banana, orange" into the prompt, the output in the console would be:

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["apple", "banana", "orange"]

Here's an example function in Python that replaces spaces with dashes in a string:

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def replace_space_with_dash(string):
    return "-".join(string.split())

For example, if we call replace_space_with_dash("replace the space by a -") it will return "replace-the-space-by-a-".

In this function, we first use the split() method to split the string into a list of words. By default, split() splits the string at every whitespace character (spaces, tabs, newlines, etc).

Then we use the join() method to join the words back into a single string, using - as the separator. This effectively replaces all the spaces with dashes.

Here's the link to the official documentation for split() and join() in Python: https://docs.python.org/3/library/stdtypes.html#str.split and https://docs.python.org/3/library/stdtypes.html#str.join respectively.

Here's an example code in JavaScript using the toUpperCase() and slice() methods to capitalize each word of a string:

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function capitalizeString(str) {
  let capitalizedStr = "";
  let words = str.split(" ");
  for (let i = 0; i < words.length; i++) {
    let word = words[i].toLowerCase();
    capitalizedStr += word.charAt(0).toUpperCase() + word.slice(1) + " ";
  }
  return capitalizedStr.trim();
}

// Example usage:
let sentence = "hello world";
let capitalizedSentence = capitalizeString(sentence);
console.log(capitalizedSentence); // Output: Hello World

In this code, we first split the input string into an array of words using the split() method with space as the separator. Then, we iterate through each word using a for loop, convert it to lowercase using the toLowerCase() method, capitalize the first letter of each word using toUpperCase() and slice() methods, and add it to our final capitalizedStr. Finally, we trim any extra spaces from the start and end of our string using the trim() method and return the capitalized string.

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function splitString(input) {
  let words = input.split(' ');
  return words;
}

//Sample output
console.log(splitString('This is some text'));
// ['This', 'is', 'some', 'text']

The most popular string methods are:

1. length(): returns the length of a given string
2. charAt(): returns the specific character at a given index
3. indexOf(): returns the index of the first occurrence of the specified character
4. lastIndexOf(): returns the index of the last occurrence of the specified character
5. replace(): replaces all occurrences of a given character with a specified character
6. toUpperCase(): returns the string in uppercase
7. toLowerCase(): returns the string in lower case
8. trim(): removes all leading and trailing white space
9. valueOf(): returns the primitive value of a string
10. split(): splits a string into an array of strings based on a given delimiter.

References:

• VSCode Documentation
• Java Tutorials Point