imacros javascript getElementsByClassName undefined

Question

我收到上述错误，因为脚本试图加载＆＃34; var ul＆＃34;在加载页面{{！COL1}}之前。如何在页面加载后才能运行它。

 var macro;
 macro =  "CODE:";
 macro += "SET !DATASOURCE C:\\imacros\\artmi.csv" + "\n";
 macro += "SET !DATASOURCE_COLUMNS 3" + "\n"
 macro += "URL GOTO={{!COL1}}" + "\n";
 var ul = window.content.document.getElementsByClassName("vd-doc")[0].getElementsByTagName("li");
 for (var i = 0; i < ul.length; ++i) {
 macro += "TAG POS={{i}} TYPE=A ATTR=HREF:*" + "\n";
 macro += "TAG POS=1 TYPE=H1 ATTR=* EXTRACT=TXT" + "\n";
 macro += "SAVEAS TYPE=EXTRACT FOLDER=C:\\imacros FILE=artmi23.csv" + "\n";
 }
 iimPlay(macro);

Answer 1

试试这个

document.addEventListener("DOMContentLoaded", function () {
    // Put your code here ...
});

Answer 2

var macro;
 macro =  "CODE:";
 macro += "SET !DATASOURCE C:\\imacros\\artmi.csv" + "\n";
 macro += "SET !DATASOURCE_COLUMNS 3" + "\n"
 macro += "URL GOTO={{!COL1}}" + "\n";

 for (var i = 0; i < ul.length; ++i) {
 macro += "TAG POS={{i}} TYPE=A ATTR=HREF:*" + "\n";
 macro += "TAG POS=1 TYPE=H1 ATTR=* EXTRACT=TXT" + "\n";
 macro += "SAVEAS TYPE=EXTRACT FOLDER=C:\\imacros FILE=artmi23.csv" + "\n";

 iimPlay(macro);

var ul = window.content.document.getElementsByClassName("vd-doc")[0].getElementsByTagName("li");
 }

这段代码更有意义。