javascript：d3.js 读取csv , 画折线图

参考 https://blog.csdn.net/github_37483541/article/details/54934158
d3_csv_line1.html

参考书:[ D3.js By Example.pdf]
660001.csv
date,jz
2008-08-04,1.0000
... ...
2018-09-19,1.8572
2018-09-20,1.8524
2018-09-21,1.8816
记录总数大于2400行