jquery full selection, all-in-all and inverse selection

All-in-all and all-in-all implementations are relatively simple

$ (' Input:checkbox '). attr (' checked ', ' checked ');    Select All $ (' Input:checkbox '). Removeattr (' checked ');        All do not choose

　　

The inverse selection is divided into three steps: 1 Find all selected checkbox,2 set all the checkboxes to selected, 3 set the previously found selected Checbox to not selected (if there is a better method please leave a message to discuss)

var checked = $ (' input:checkbox:checked ');    Find all selected checkbox$ (' Input:checkbox '). attr (' checked ', ' checked ');  Set all checkboxes to check checked.removeattr (' checked ');                      Set the selected Checbox that was previously found to not selected