JavaScript读取本地json文件方式

[
{
  "name": "Kwan-Liu Ma",
  "num": 356
}, 
{
  "name": "Huamin Qu",
  "num": 241
}, 
{
  "name": "Wei Chen",
  "num": 585
}, 
{
  "name": "Shixia Liu",
  "num": 120
}, 
{
  "name": "Xiaoru Yuan",
  "num": 120
},
{
  "name": "Yingcai Wu",
  "num": 91
}
]

<script type="text/javascript" src="http://echarts.baidu.com/gallery/vendors/echarts/echarts.min.js"></script>
$.get('./authors.json', function (data) {
//读进了data变量中
//接下来用到data的代码必须全部在此函数内部进行
})

<script src="http://d3js.org/d3.v3.js"></script>
d3.json("authors.json", function(error, authordata) {
   if(error) console.error(error);
    //读进了authordata变量
    //接下来用到authordata的代码必须全部在此函数内部进行
});