Jquery version of checkbox full selection and inverse selection function written in 3 minutes_jquery

Copy code The code is as follows:

//Inverse selection
function selectnoALL() {
$ ("input:checkbox").each(function (i) {
if (this.checked) {
this.checked = false;
} else {
this.checked = true;
}
});
}
//Select all
function selectALL() {
var chelength = $("input:checkbox").length;
$( "input:checkbox").each(function (i) {
if (i < chelength - 2) {
this.checked = true;
}
});
}

I guess there are a lot of bugs written in 3 minutes