1.数组

var array = [];
var length = array.length;

2.JSON对象

1)方法1:

var pBzjtJson ={"SORT":1,"TITLE":"12324","RANK":1,"TYPE_TAG":"班子集体责任","SR_CLASS_ID":"a2bdfa5b5f684d5d9da5c055117c94c5"};
var length = Object.keys(pBzjtJson).length;
console.log(length);//5

2)方法2:

function getJsonLength(jsonData){
    var jsonLength = 0;
    for(var item in jsonData){
        jsonLength++;
    }
    return jsonLength;
}

参考:

  1. get size of json object