Luci interacting with data on a page

The Lua script is invoked in the HTM via XHR, LUA scripts location:/usr/lib/lua/luci/controller/admin/xxx.lua xxx.htm: 1. Static Call

var callpath= ' <%=luci.dispatcher.build_url ("admin", "xxx", "dev_info")%> ';

callpath=callpath+ '/' +param1+ '/' +param2; If you need to pass a parameter

Xhr.get (Callpath,null,function (x,rval) {

......

｝

);

2. Dynamic Invocation

var callpath= ' <%=luci.dispatcher.build_url ("admin", "xxx", "dev_info", parameter)%> ';

Xhr.poll (5,callpath, null,function (X,callpath rval) {...
}

);

The first parameter is a timed refresh time (in S)

The second parameter is the path generated by the Luci, where parameter is the parameter passed to LUA

The third parameter is temporarily unknown, and filling null does not affect

The fourth one is the callback function:

X: Is a XHR object, generally not

Rval: Is the return value of the LUA function (general value rval[0])

3. Trigger Submit Commit Call

<script>

document.getElementById ("Id_input_submit"). Value=paramt; Value will be uploaded to Lua.
document.getElementById ("Id_input_submit"). Click (); Triggering the Submit event

</script>

<form style= "Display:none" method= "post" action= "<%=luci.dispatcher.build_url (" admin "," xxx "," dev_info ")% > "enctype=" Multipart/form-data ">

<input id= "Id_input_submit" name= "Getpackage" type= "Submit" \>
</form>
Xxx.lua:

Entry ({"admin", "xxx", "Dev_info"}, Call ("Dev_info"), nil). Leaf = True

page methods are identical:

--paramval: Receives the passed down parameter, (has two, writes two to enter the parameter)
function Dev_info (paramval)

Local function Getdev (val)
......
Return .....
End

Luci.http.prepare_content ("Application/json")
Luci.http.write (' [')
Luci.http.write_json (Getdev (Paramval))
Luci.http.write ('] ')
End
Page Method 3:

function Dev_info ()

Local Value=luci.http.formvalue ("Getpackage")--Gets the value of the passed value, where Getpackage is the name of input

.......

End