jQuery method analysis of traversing json_jquery

This article analyzes the jQuery method of traversing json through examples. Share it with everyone for your reference, the details are as follows:

Copy code The code is as follows:

var obj = {"status":1,"bkmsg":"u6210u529f", "bkdata":["u5415u5c1au5fd7","1387580400","u6dfbu52a0u8bb0u5f55"]}{"status":1,"bkmsg":"u6210u529f","bkdata":["u5415u5c1au5fd7","1387580400 ","u6dfbu52a0u8bb0u5f55"] },{"status":1,"bkmsg":"u6210u529f","bkdata":["u5415u5c1au5fd7","1387580400","u4ec0u4e48u4e5fu6ca1u6709"]}

ajax request:

$.ajax({
    url: '/path/to/file',
    type: 'GET',
    dataType: 'json',
    data: {param1: 'value1'},
    success: function (obj){
      //遍历obj
    }
})

The returned content is in the success function, and all traversal operations are performed here:

for loop:

var obj = {
    "status":1,
    "bkmsg":"\u6210\u529f",
    "bkdata":["\u5415\u5c1a\u5fd7","1387580400","\u6dfb\u52a0\u8bb0\u5f55"]
}
// console.log(obj.length);
if (obj.status == 1) {
    for (var i = 0; i < obj.bkdata.length; i++) {
      console.log(obj.bkdata[i]);
    };
}else{
    alert("数据有误~");
};

for in loop:

//for in循环
  for(x in obj.bkdata){
    //x表示是下标，来指定变量，指定的变量可以是数组元素，也可以是对象的属性。
    console.log(obj.bkdata[x]);
  }
//元素 each方法
if (obj.status == 1) {
 $(obj.bkdata).each(function(index,item){
  //index指下标
  //item指代对应元素内容
  //this指代每一个元素对象
  //console.log(obj.bkdata[index]);
  console.log(item);
  //console.log($(this));
 });
}else{
 alert("数据有误~");
};
//jquery each方法
$.each( obj.bkdata, function(index,item){
    console.log(item);
});

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I hope this article will be helpful to everyone in jQuery programming.