html input box no border on focus code example

Example 1: jquery enable submit button

//jQuery 1.6+ use:
$("#submitButtonID").prop('disabled', true); //disable 
$("#submitButtonID").prop('disabled', false); //enable

//jQuery 1.5 and below use:
$("#submitButtonID").attr('disabled','disabled'); //disable 
$("#submitButtonID").removeAttr('disabled'); //enable

Example 2: placeholder text disappear when click in react

placeholder="Search..."
              onFocus={(e) => e.target.placeholder = ''}
              onBlur={(e) => e.target.placeholder = 'Search...'}