JavaScript: Remove HTML/XML tags from string

JavaScript String: Exercise-35 with Solution

Write a JavaScript function to remove HTML/XML tags from a string.

Test Data:
console.log(strip_html_tags('<p><strong><em>PHP Exercises</em></strong></p>'));
"PHP Exercises"

Visual Presentation:

Sample Solution:

JavaScript Code:

// Function to strip HTML tags from a given string
function strip_html_tags(str) {
    // Check if the input string is null or empty
    if ((str === null) || (str === '')) {
        // If so, return false
        return false;
    } else {
        // If not, convert the input string to a string type
        str = str.toString();
    }
    // Use a regular expression to replace all HTML tags with an empty string
    return str.replace(/<[^>]*>/g, '');
}

// Test the function with a sample string and log the result to the console
console.log(strip_html_tags('PHP Exercises'));

Output:

PHP Exercises

Explanation:

In the exercise above,

• The function "strip_html_tags()" takes a single parameter 'str', which represents the input string from which HTML tags will be removed.
• Inside the function:
• It first checks if the input string is null or empty. If so, it returns 'false'.
• If the input string is not null or empty, it converts it to a string type.
• It then uses a regular expression '(/<[^>]*>/g)' to match and replace all HTML tags (<...>) with an empty string, effectively removing them.
• Finally, the function returns the modified string with HTML tags removed.

Flowchart:

Live Demo:

See the Pen JavaScript Remove HTML/XML tags from string-string-ex-35 by w3resource (@w3resource) on CodePen.

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