Check/Uncheck checkbox with JavaScript (jQuery or vanilla)?

Question

How can a checkbox be checked/unchecked using JavaScript, jQuery or vanilla?

Answer 1

For single check try

myCheckBox.checked=1

 Call to her

for multi try

document.querySelectorAll('.imChecked').forEach(c=> c.checked=1)

Buy wine: 

Play smooth-jazz music: 

Shave: