How to Remove Text from a String: Removing a Prefix Using JavaScript\'s Replace Method?

String Manipulation: Removing Substrings

Often, you may encounter a scenario where you need to manipulate strings by removing certain substrings. This technique is particularly useful when you have data with unwanted or redundant parts. Let's explore how to remove text from a string.

Problem:

Consider a string "data-123". You wish to remove the "data-" prefix while preserving the numerical part "123". How can this be achieved using programming techniques?

Solution:

To remove the "data-" prefix from the string, we can utilize the replace() method. This method allows you to substitute a portion of a string with a new value.

Consider the following JavaScript code:

<code class="javascript">var ret = "data-123".replace('data-','');
console.log(ret); //prints: 123</code>

In this example, we replace the substring "data-" with an empty string (''), effectively removing it from the original string. The result, stored in the ret variable, is "123", as desired.

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