Question

我的代码如下：

<?php
$hour_list = array( '' => '',  '0' => 0,  '1' => 1,  '2' => 2,  '3' => 3,  '4' => 4,  '5' => 5,  '6' => 6,  '7' => 7,  '8' => 8,  '9' => 9,  '10' => 10,  '11' => 11,  '12' => 12,  '13' => 13,  '14' => 14,  '15' => 15,  '16' => 16,  '17' => 17,  '18' => 18,  '19' => 19,  '20' => 20,  '21' => 21,  '22' => 22,  '23' => 23,  '24' => 24 ) ;
?>

<script type="text/javascript">
function create_hour_dropdown(){
  var hour_list = <?php echo json_encode($hour_list);?>;
  var hr_list;
  alert(JSON.stringify(hour_list));
  /* Result is the following json string
  {"0":"0","1":"1","2":"2","3":"3","4":"4","5":"5","6":"6","7":"7","8":"8","9":"9","10":"10","11":"11","12":"12","13":"13","14":"14","15":"15","16":"16","17":"17","18":"18","19":"19","20":"20","21":"21","22":"22","23":"23","24":"24","":""}*/
    for (var key in hour_list) {
              if (hour_list.hasOwnProperty(key)) {
                //alert(key + " -> " + hour_list[key]);
                hr_list += '<option value="'+key+'">'+hour_list[key]+'</option>';
              }
        }
}
    var table = document.getElementById("editview");
    var rowCount = table.rows.length;
    var newRow = table.insertRow(rowCount);
    newRow.id = "vendor_1";
    var newTD9 = document.createElement("td");
    newTD9.align = "left";
    newTD9.setAttribute("class", "ven_hr_min");
    newTD9.innerHTML = '<select id="hmhour_ven_1" name="hmhour_ven_1" size="1" >'+hr_list+'</select>';
    newTD9.setAttribute("colspan", "2");
    newRow.appendChild (newTD9);
</script>

我很困惑为什么第一个数组值在jSON字符串中成为最后一个。我希望JS数组保持与PHP数组相同。请帮忙！谢谢！

修改：我已经编辑了答案。 question被称为可能重复的答案

文档中没有任何内容明确确认数组项的顺序是保留的。但是，文档声明对于非数组属性，无法保证顺序：

但是我在这里使用json_encode按照question转换为php数组。

修改：再次编辑以显示我如何使用它。

具有空键值的PHP数组在转换为javascript数组

0 个答案: