The Java String contains function is a method that is used to check whether a particular sequence of characters is present in a given string or not. It returns a boolean value of true if the specified sequence of characters is found in the string, and false otherwise. The method takes a single argument, which is the sequence of characters to be searched for in the string. It is case-sensitive, meaning that it will only match the exact sequence of characters provided. The contains function is commonly used in string manipulation and searching operations in Java programming. Keep reading below to learn how to Java String contains in TypeScript.

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Java String contains in TypeScript With Example Code

Java developers who are transitioning to TypeScript may find themselves wondering how to perform a Java String contains in TypeScript. Fortunately, TypeScript provides a built-in method for checking if a string contains another string.

To check if a string contains another string in TypeScript, you can use the `includes()` method. This method returns a boolean value indicating whether or not the specified string is found within the calling string.

Here’s an example of how to use the `includes()` method in TypeScript:

const myString: string = "Hello, world!";
const substring: string = "world";

if (myString.includes(substring)) {
console.log("Substring found!");
} else {
console.log("Substring not found.");

In this example, we declare a string variable `myString` and a substring variable `substring`. We then use the `includes()` method to check if `myString` contains `substring`. If the substring is found, we log “Substring found!” to the console. Otherwise, we log “Substring not found.”

It’s important to note that the `includes()` method is case-sensitive. If you need to perform a case-insensitive search, you can convert both strings to lowercase or uppercase using the `toLowerCase()` or `toUpperCase()` methods before calling `includes()`.

In summary, performing a Java String contains in TypeScript is as simple as using the `includes()` method. With this method, you can easily check if a string contains another string in your TypeScript code.

Equivalent of Java String contains in TypeScript

In conclusion, TypeScript provides a powerful and efficient way to work with strings in your code. The equivalent of the Java String contains function in TypeScript is the includes method. This method allows you to check if a string contains a specific substring and returns a boolean value. It is easy to use and can be applied to any string variable or literal. By using the includes method, you can simplify your code and make it more readable and maintainable. So, if you are working with strings in TypeScript, be sure to use the includes method to check for substrings.

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