获取XMLHttpRequest查询字符串参数

Question

我正在尝试刮擦此page

xhr网址是：

https://www.marks-gmbh.de/index2.php?option=com_virtuemart&page=shop.product_details&flypage=flypage_marks.tpl&product_id=40000560&category_id=10335&Itemid=91&unique=15614878101749349853&only_page=1&form_marks_RZ_fo_sel=Fp&form_marks_RZ_ma_sel_1561487810=1.0570%20%7C%20St52-3%3B%20S355J2&form_marks_RZ_ma_sel=1.0570

我想知道如何从javascript函数生成此唯一代码。

Javascript网址

https://www.marks-gmbh.de/components/com_virtuemart/fetchscript.php?gzip=0&subdir[0]=/js&file[0]=sleight.js&subdir[1]=/js/mootools&file[1]=mootools-release-1.11.js&subdir[2]=/js/mootools&file[2]=mooPrompt.js&subdir[3]=/themes/Marks&file[3]=theme.js&subdir[4]=/themes/Marks&file[4]=V170_0429.js&subdir[5]=/js/slimbox/js&file[5]=slimbox.js

函数名称是selectTblRow。

我只想知道该函数参数（rowId，form，fld）的值要传递什么

我正在尝试查找unique参数的值。我尝试了添加chrome摘录以进行观看。此操作无效或执行不正确。

selectTblRow('form_marks_RZ_ma_sel_1561486048_1x0037','RZ_form','RZ_formaefsdfdsf')
fetchscript.php?gzip=0&subdir[0]=/js&file[0]=sleight.js&subdir[1]=/js/mootools&file[1]=mootools-release-1.11.js&subdir[2]=/js/mootools&file[2]=mooPrompt.js&subdir[3]=/themes/Marks&file[3]=theme.js&subdir[4]=/themes/Marks&file[4]=V170_0429.js&subdir[5]=/js/slimbox/js&file[5]=slimbox.js:1894 form_marks_RZ_ma_sel_1561486048_1x0037
fetchscript.php?gzip=0&subdir[0]=/js&file[0]=sleight.js&subdir[1]=/js/mootools&file[1]=mootools-release-1.11.js&subdir[2]=/js/mootools&file[2]=mooPrompt.js&subdir[3]=/themes/Marks&file[3]=theme.js&subdir[4]=/themes/Marks&file[4]=V170_0429.js&subdir[5]=/js/slimbox/js&file[5]=slimbox.js:1897 Uncaught TypeError: Cannot read property 'getAttribute' of null
    at selectTblRow (fetchscript.php?gzip=0&subdir[0]=/js&file[0]=sleight.js&subdir[1]=/js/mootools&file[1]=mootools-release-1.11.js&subdir[2]=/js/mootools&file[2]=mooPrompt.js&subdir[3]=/themes/Marks&file[3]=theme.js&subdir[4]=/themes/Marks&file[4]=V170_0429.js&subdir[5]=/js/slimbox/js&file[5]=slimbox.js:1897)
    at <anonymous>:1:1

我需要rowId，form，fld的值