Question

在reactjs里面怎么解析json,比如 { a:"a",b:[{c:"c",d:"d" }] }

这是数据：[{\"strategy_id\":605,\"strategy_name\":\"hello4\",\"profit\":-16.44}]","create_date":"2017-01-03T09:39:48.000Z","isweb":1,"isweixin":0,"isrecommand":null}]——————我获得{md.recommandStockHistoryId}，怎么获得strategy_id

Answer 1

<script>
var json = [{"name":[{"firstname":"Lee","lastname":"min"}],"sex":"male"},{"age":"21","hobit":"baskeyball"}]
alert(json[0].name[0].firstname);
//json[0] 就是{"name":"Lee","sex":"male"}
//json[0].name[0] 就是{"firstname":"Lee","lastname":"min"}
//json[1] 就是{"age":"21","hobit":"baskeyball"}
</script>

追问

[
{
"recommand_stock_history_id": 49,
"ref_strategies": "[{\"strategy_id\":605,\"strategy_name\":\"hello4\",\"profit\":-16.44}]",
}
] 如何获得 strategy——id？

追答

<script>
var json = [{"recommand_stock_history_id": 49,
 "ref_strategies":[{"strategy_id":605,"strategy_name":"hello4","profit":-16.44}] }]
var arr = json[0].ref_strategies[0].strategy_id;
alert(arr)
</script>  //我将json里面的格式改了一下，如果非要用你原来的json格式的话，就真的抱歉了，