根据URL参数自动选择选择字段中的选项？

http://domainname.com/page/?selectfieldOption=enable

when i use a URL like above(for example), it automatically select the option in the select field(), please see the screenshots attached

URL like this(example)

the URL have the value(parameter) of selected field.then it automatically select to that value

I'm not exactly sure what you want to achieve. Some Code would be helpfull. Here you can find a jQuery function to access URL parameters.