var quoteDataObj = [{"symbol":".SPX","symbolType":"symbol","code":0,"name":"S\u0026P 500 Index","shortName":"S\u0026P 500","last":"2116.10","exchange":"INDEX","source":"Exchange","open":"2092.13","high":"2117.66","low":"2092.13","change":"28.10","currencyCode":"USD","timeZone":"EDT","volume":"0","provider":"CNBC Quote Cache","altSymbol":".SPX","curmktstatus":"REG_MKT","realTime":"true","assetType":"INDEX","noStreaming":"false","encodedSymbol":".SPX"}]
求助帖,要怎么样把这些数据2116.10, 2092.13扣出来?
谢谢啦