Q
How can you add an attribute to an HTML element using JavaScript?

Answer & Solution

Answer: Option A
Solution:
To add an attribute to an HTML element using JavaScript, you can use the element.setAttribute('attributeName', 'value') method. This method adds a new attribute ('attributeName') with the specified value ('value') to the element.
Related Questions on Average

How can you remove an attribute from an HTML element using JavaScript?

A). element.removeAttribute('attributeName');

B). element.attributeName = '';

C). element.removeAttribute('attributeName', 'value');

D). element.attributeName.remove();

How can you change the href attribute of an anchor (link) element using JavaScript?

A). element.href = 'https://example.com';

B). element.setAttribute('href', 'https://example.com');

C). element.setHref('https://example.com');

D). element.changeHref('https://example.com');

How can you set the font color of an HTML element using JavaScript?

A). element.style.color = 'color';

B). element.style.fontColor = 'color';

C). element.fontColor = 'color';

D). element.color = 'color';

How can you show a hidden HTML element using JavaScript?

A). element.style.display = 'block';

B). element.style.visibility = 'visible';

C). element.visible = true;

D). element.style.opacity = 1;

How can you dynamically change the value of an input element using JavaScript?

A). element.value = 'New Value';

B). element.setAttribute('value', 'New Value');

C). element.setValue('New Value');

D). element.changeValue('New Value');

How can you hide an HTML element using JavaScript?

A). element.style.display = 'none';

B). element.style.visibility = 'hidden';

C). element.visible = false;

D). element.style.opacity = 0;

How can you add a CSS class to an HTML element using JavaScript?

A). element.classList.add('className');

B). element.className = 'className';

C). element.setAttribute('class', 'className');

D). element.addClass('className');

How can you dynamically change the source (URL) of an image element using JavaScript?

A). element.src = 'newimage.jpg';

B). element.setSource('newimage.jpg');

C). element.setAttribute('src', 'newimage.jpg');

D). element.changeSource('newimage.jpg');

How can you disable an HTML button using JavaScript?

A). element.disabled = true;

B). element.setAttribute('disabled', 'disabled');

C). element.disable();

D). element.disable = true;

How can you set the border width of an HTML element using JavaScript?

A). element.style.borderWidth = 'width';

B). element.style.border.width = 'width';

C). element.border.width = 'width';

D). element.width = 'width';