有关javascript控制checkbox的问题

Question

delete_form.col_checkbox[].checked => delete_form["col_checkbox[]"].checked

Answer 1

写错了
function check_or_not(){
//alert("sdfsa");
obj = delete_form["col_checkbox[]"];
if (delete_form.all_select_checkbox.checked=="checked"){
for(i=0;i<obj.length;i++)
obj[i].checked=flase;
}else{
for(i=0;i<obj.length;i++)
obj[i].checked=true;
}

}

Answer 2

function check_or_not(){
//alert("sdfsa");
var obj;
var i; obj = the_form["col_checkbox[]"];
if (the_form.all_select_checkbox.checked=="checked"){
for(i=0;i<obj.length;i++)
obj[i].checked=false;
}else{
for(i=0;i<obj.length;i++)
obj[i].checked=true;
}
}
<input type="checkbox" name="all_select_checkbox" value="checkbox" onclick="javascript:check_or_not()">注意：
form名字现改为the_form