jQuery将选中的复选框存储到数组中

选择器不正确,将其更改为:

var $tuesday = $("input[type=checkbox][name='tuesday[]']:checked");

要获取值,可以使用.map()返回数组的方法:

if ($tuesday.length) {
   // Getting values of the checked checkboxes
   var values = $tuesday.map(function(){
        return this.value;
   }).get();
   // ...
} else {
    // There is no checked `day[]` checkbox
}

如果您有其他类似的复选框,则可以使用数组:

var days = ['days', 'in', 'a', 'week'],
    values = {},
    errors = [],
    $checkboxes = $("input[type=checkbox]");

$.each(days, function(_, day) {
  var $set = $checkboxes.filter('[name="'+day+'[]"]:checked');
  if ($set.length) {
      values[day] = $set.map(function() {
          return this.value;
      }).get();
  } else {
      // There is no checked `day[]` checkbox
      errors.push(day);
  }
});

if (errors.length) {
   // console.log('Please check at least one hour in ' + errors.join(', ') + ' days ...');
} else {
  // console.log(values);
}