get attribute value in cypress code example

Example 1: cypress have attribute

cy.get('selector')
	.should('have.attr', 'aria-checked', 'true')

Example 2: cypress check element have attribute

cy.get('input').invoke('attr', 'placeholder').should('contain', 'username')

Example 3: cypress check element have attribute

// have.attr comes from chai-jquery
cy.get('#header a').should('have.attr', 'href', '/users')