如何使用id获取多个复选框值

// HTML
<input type="checkbox" class="checkbox" value="value1">
<input type="checkbox" class="checkbox" value="value2">
<input type="checkbox" class="checkbox" value="value3">

// JavaScript
var checkboxes = document.getElementsByClassName('checkbox');
var selectedValues = [];

for (var i = 0; i < checkboxes.length; i++) {
  if (checkboxes[i].checked) {
    selectedValues.push(checkboxes[i].value);
  }
}

console.log(selectedValues);

// HTML
<input type="checkbox" class="checkbox" value="value1">
<input type="checkbox" class="checkbox" value="value2">
<input type="checkbox" class="checkbox" value="value3">

// JavaScript (with jQuery)
var selectedValues = [];

$('.checkbox').each(function() {
  if ($(this).is(':checked')) {
    selectedValues.push($(this).val());
  }
});

console.log(selectedValues);