jquery checkbox checkbox realizes judgment before deletion_jquery

function deleteUser() {
//At that time it was I want to save the content as str ="", but it doesn't work
//var str;
var array = new Array(); //The ID used to save the selected piece of data
var flag; //Determine whether an unselected one is
$("input[name='selectFlag']:checkbox").each(function() { //Traverse all checkboxes whose name is selectFlag
if ($ (this).attr("checked")) { //Determine whether it is selected
flag = true; //As long as one is selected, set it to true
}
})
if (flag) {
$("input[name='selectFlag']:checkbox").each(function() { //Traverse all checkboxes whose name is selectFlag
if ($(this).attr("checked ")) { //Determine whether it is selected
//alert($(this).val());
array.push($(this).val()); //Add the selected value into array
//str =$(this).val() ",";
}
})
//Pass the data to be collectively deleted to action processing
window. self.location = "deleteUser?info=" array;
} else {
alert("Please select at least one user");
}
}

@Override
public String execute() throws Exception {
// TODO Auto-generated method stub
//The frontend is transmitted in a, b, c format. First decompose the string
String s[] = info.split (",");
/*
* for(int i=0;i*/
if (s.length > 0) {
for (int i = 0; i < s.length; i ) {
userDao.deleteUser(s[i]);
}
}
return "success";
}