$(document).ready(function(){
for(i=0;i<100;i++){
 var that=$("#checkName"+i);
 that.val(that.attr("checked")?1:0);
 that.click(function(){
 $(this).val($(this).attr("checked")?1:0);
 });
 };
 });

------解决方案--------------------

JScript code

$(document).ready(function(){
    $('input[id^=checkName]').each(function() {
        var cb = $(this);
        cb.val(cb.attr('checked') ? 1 : 0);
        cb.click(function() {
            cb.val(cb.attr('checked') ? 1 : 0);
        });
    });
});