将 html 页面中的 javascript 变量传递到 html 表单（在同一页面上）以提交给 perl cgi
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pass a javascript variable within a html page into a html form (on the same page) for submission to perl cgi
提问by user2531749
<script type="text/javascript">
var id = getValue("ID");
document.write(id);
</script>
<form action="cgi-bin/runalg.cgi" method="post" enctype="multipart/form-data">
<input type="radio" name="genome" value="E.Coli"> <i>E.Coli</i> <input type="radio" name="genome" value="Human"> Human<br>
<input type="submit" name="submit" value="Submit"/>
<input type="reset" name="reset" value="Clear"/>
</form>
</body>
How do I get the value of the JavaScript variable (var id) into the form so that on submission I can retrieve it in the runalg.cgiusing the $q<-param("ID")command?
如何在表单中获取 JavaScript 变量 (var id) 的值，以便在提交时可以在runalg.cgiusing$q<-param("ID")命令中检索它？
回答by vladkras
you can write it directly:
你可以直接写：
<script type="text/javascript">
document.write('<input type="hidden" name="ID" value="'+id+'"/>');
</script>
回答by Trylks
Add a hidden field. Set the value in that field to the value of the variable in Javascript.
添加隐藏字段。将该字段中的值设置为 Javascript 中变量的值。
<form action="cgi-bin/runalg.cgi" method="post" enctype="multipart/form-data">
[...]
<input type="hidden" name="ID" value="default">
</form>
And then on javascript:
然后在 javascript 上：
<script type="text/javascript">
document.forms[0].elements["ID"].value = getValue("ID");
</script>
The index for the form may vary in your document.
表格的索引在您的文档中可能有所不同。
