javascript : d3.js 读取csv , 画折线图

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

参考书:[ D3.js By Example.pdf]
jijin1.csv
date,jz
2010-04-02,1.0000
... ...
2018-09-19,1.7536
2018-09-20,1.7474
2018-09-21,1.7686
记录总数大于2000行