使用jquery ajax将JSON发布到PHP

如果您删除了代码

dataType: 'json'

$('#save').click(function() {  var tmp = JSON.stringify($('.dd').nestable('serialize'));  // tmp value: [{"id":21,"children":[{"id":196},{"id":195},{"id":49},{"id":194}]},{"id":29,"children":[{"id":184},{"id":152}]},...]  $.ajax({    type: 'POST',    url: 'save_categories.php',    data: {'categories': tmp},    success: function(msg) {      alert(msg);    }  });});