Jquery CheckBox select all method code with js checkbox select all inverse code_jquery

The jquery method is as follows:

Copy code The code is as follows:

function CheckAll (val) {
$("input[name='chkJob']").each(function() {
this.checked = val;
});
$("#chkAll ").attr("checked", val);//Set the select-all button state
}

val This parameter passes the selection state of the select-all button
name= 'chkJob' is the name of the checkbox in the list
chkAll is the name of the select all button
I like the simplicity and clarity of Jquery...
There is really a gap compared to writing in JavaScript!
eg:
javascript select all and inverse select code

Copy code The code is as follows:

//Select all
function checkall() {
var all = document.getElementsByTagName("input");
for (var i = 0; i < all.length ; i ) {
if (all[i].type == "checkbox") {
all[i].checked = true;
}
}
}
/ /Inverse selection
function checknull() {
var all = document.getElementsByTagName("input");
for (var i = 0; i < all.length; i ) {
if ( all[i].type == "checkbox") {
all[i].checked = false;
}
}
}