JavaScript: Create an element from a string
JavaScript fundamental (ES6 Syntax): Exercise-250 with Solution
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
const createElement = str => {
const el = document.createElement('div');
el.innerHTML = str;
return el.firstElementChild;
};
const el = createElement(
`<div class="container">
<p>Hello!</p>
</div>`
);
console.log(el.className); // 'container'
Sample Output:
container
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-250-1 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus
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Next: Write a JavaScript program to write a JSON object to a file.
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JavaScript: Tips of the Day
How to check whether a string contains a substring in JavaScript?
ECMAScript 6 introduced String.prototype.includes:
const string = "foo"; const substring = "oo"; console.log(string.includes(substring));
includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:
var string = "foo"; var substring = "oo"; console.log(string.indexOf(substring) !== -1);
Ref: https://bit.ly/3fFFgZv
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