Strikethrough Text in JavaScript: Ditching string.strike and Modern Solutions


What it is

  • In JavaScript, there used to be a method called string.strike() that supposedly transformed a string into a format that would display it with a strikethrough effect, similar to what the HTML <strike> tag does.

Why it's not recommended

  • More importantly, the HTML <strike> element itself has been removed from the HTML specification. Browsers may still render it with a strikethrough, but it's not guaranteed and can lead to inconsistency across different browsers.

  • However, it's important to understand that string.strike() is a deprecated method. This means it's an older way of doing things that is no longer considered the best practice.

Alternatives for Strikethrough Text

  • To achieve strikethrough text in modern JavaScript, you have better options:

      • The <del> element is the recommended way to indicate content that has been deleted from a document. Browsers typically render it with a strikethrough.
      <p>This is the original text. <del>This part has been deleted.</del></p>
      
    1. CSS text-decoration Property

      • You can use the CSS text-decoration property to apply a strikethrough style directly to an element's text content. This approach offers more flexibility in terms of styling.
      <p id="myText">This is some text</p>
      
      #myText {
          text-decoration: line-through;
      }
      

In summary

  • Use the <del> element or the text-decoration property for strikethrough text in modern JavaScript development.
  • Avoid using string.strike() as it's deprecated and relies on outdated HTML elements.


Using the <del> HTML Element

<!DOCTYPE html>
<html>
<head>
<title>Strikethrough Example</title>
</head>
<body>

<p>This is the original text. <del>This part has been deleted.</del></p>

</body>
</html>

This code creates a paragraph element containing both regular text and text wrapped in a <del> element. Browsers will typically display the deleted text with a strikethrough.

Using CSS text-decoration Property

<!DOCTYPE html>
<html>
<head>
<title>Strikethrough Example</title>
<style>
  #strikethroughText {
    text-decoration: line-through;
  }
</style>
</head>
<body>

<p id="strikethroughText">This text has a strikethrough applied with CSS.</p>

</body>
</html>

This code defines a paragraph element with an ID "strikethroughText". It also includes a <style> section that defines a CSS rule for the element with that ID. The rule sets the text-decoration property to line-through, which will display the text with a strikethrough line.



Using the <del> HTML Element

This is the preferred way to indicate content that has been deleted from a document. Browsers typically render it with a strikethrough line.

Example

<p>This is the original text. <del>This part has been deleted.</del></p>

Using CSS text-decoration Property

This approach offers more control over styling the strikethrough effect. You can adjust the line style, thickness, and color using CSS properties.

Example

<p id="strikethroughText">This text has a strikethrough applied with CSS.</p>

<style>
  #strikethroughText {
    text-decoration: line-through; /* Applies a single line */
    text-decoration-style: dashed; /* Change line style (e.g., dashed, dotted) */
    text-decoration-color: red; /* Change line color */
  }
</style>

Choosing the Right Approach

  • If you want more control over the visual appearance of the strikethrough text, CSS styling is the way to go.
  • If you need to modify the HTML structure dynamically in JavaScript (e.g., creating a list of deleted items), using <del> elements might be more suitable.
  • Choose the method that best aligns with your content's meaning and desired functionality.

  • While both methods achieve a similar visual effect, the semantic meaning differs slightly:

    • <del> indicates deleted content.
    • CSS text-decoration primarily focuses on visual presentation.