[JavaScript] sample code for uploading files to URLs in multiple forms

Assume that a webpage contains multiple forms, one of which contains file uploads. [html] <form action = 'HTTP: // xxx.com/data'method = 'post'> <input type = "text" name = "data"/> <input type = "submit" name = "Submit2" value = "Upload data "> </form> <form action = '... '...>... </form>... <form action = '... '...>... </form> <form action = 'HTTP: // xxx.com/upload'enctype = 'multipart/form-data' method = 'post'> <input type = "file" name = "fileUpload"/> <input type = "submit" name =" Submit2 "value =" Upload File "> </form> How can I obtain the URL for uploading this file? The following is a JavaScript code example [javascript] function showUploadUrl () {for (var I = 0; I <document. forms. length; I ++) {var form = document. forms [I]; for (var j = 0; j <form. elements. length; j ++) {if (form. elements [j]. type = "file") {alert ("Upload address:" + form. action) ;}}} connection