JavaScript: Create an element from a string

JavaScript fundamental (ES6 Syntax): Exercise-250 with Solution

Create Element from String

Write a JavaScript program to create an element from a string (without appending it to the document).

If the given string contains multiple elements, only the first one will be returned.

• Use Document.createElement() to create a new element.
• Use Element.innerHTML to set its inner HTML to the string supplied as the argument.
• Use ParentNode.firstElementChild to return the element version of the string.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
// Define a function 'createElement' that creates a DOM element from the provided HTML string
const createElement = str => {
  // Create a new div element
  const el = document.createElement('div');
  // Set the innerHTML of the div to the provided HTML string
  el.innerHTML = str;
  // Return the first element child of the div
  return el.firstElementChild;
};

// Call 'createElement' with a sample HTML string and assign the result to 'el'
const el = createElement(
  `<div class="container">
    <p>Hello!</p>
  </div>`
);

// Log the className property of the created element 'el'
console.log(el.className); // 'container'

Output:

container

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-250-1 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that creates a DOM element from an HTML string without appending it to the document.
• Write a JavaScript function that parses a string of HTML and returns the first element node found.
• Write a JavaScript program that converts a string to a DocumentFragment and extracts its child nodes.
• Write a JavaScript function that safely creates an element from a string and sets its innerHTML, then returns the element.

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