How to change the src attribute of an element using jQuery?

How to change the text content of all <h1> elements to 'New Heading' using jQuery?

A). $('h1').html('New Heading');

B). $('h1').textContent = 'New Heading';

C). $('h1').text('New Heading');

D). $('h1').innerText('New Heading');

Which jQuery method is used to change the opacity of all <div> elements to 0.5?

A). $('div').setOpacity(0.5);

B). $('div').opacity(0.5);

C). $('div').css('opacity', 0.5);

D). $('div').opacity = 0.5;

How to change the color of all paragraphs to red using jQuery?

A). $('p').style('color', 'red');

B). $('p').css('color', 'red');

C). $('p').color('red');

D). $('p').setColor('red');

Which jQuery method is used to change the HTML content of all <div> elements?

A). $('div').innerHtml('

New paragraph

B). $('div').html('

New paragraph

C). $('div').innerHTML('

New paragraph

D). $('div').setContent('

New paragraph

How to remove the class 'hidden' from all elements with the class 'element' using jQuery?

A). $('.element').removeClass('hidden');

B). $('.element').remove('hidden');

C). $('.element').deleteClass('hidden');

D). $('.element').removeClassName('hidden');

Which jQuery method is used to add the class 'highlight' to all <div> elements?

A). $('div').addClass('highlight');

B). $('div').class('highlight');

C). $('div').attr('class', 'highlight');

D). $('div').applyClass('highlight');

Which jQuery method is used to change the height of all <div> elements to 200 pixels?

A). $('div').height('200px');

B). $('div').setHeight('200px');

C). $('div').css('height', '200px');

D). $('div').style('height', '200px');

Which jQuery method is used to change the font weight of all<h2> elements to bold?

A). $('h2').style('font-weight', 'bold');

B). $('h2').fontWeight('bold');

C). $('h2').css('font-weight', 'bold');

D). $('h2').bold();

How to add the class 'active' to all<li> elements within a<ul> using jQuery?

A). $('ul li').setAttribute('class', 'active');

B). $('ul li').add('active');

C). $('ul li').addClass('active');

D). $('ul li').setAttribute('class', 'active');

Which jQuery method is used to change the background color of all paragraphs to yellow?

A). $('p').css('background-color', 'yellow');

B). $('p').style('background-color', 'yellow');

C). $('p').bgColor('yellow');

D). $('p').background('yellow');