It has been two years for the 9CBS WEB area (most of the JavaScript district), has not been tailored to the more than 9CBS answers, most of the discussion topic page has not existed, today has time, now collect finishing Some of the more common problems are considered.
ASP problem, JavaScript problem:
Q: How much is the length of the JavaScript array?
See MSDN: --------------- if Only One Argument IS Passed To The Array Construction, and The Argument Is A Number, IT Must Be An Unsigned 32-Bit Integer ( --------------- If you construct this array with only one parameter, and this parameter is a number, it must be an unsigned 32-bit integer (less than about 4 billion), thus this The numbers become the size of this array. Q: Is there a function of testing a client system, such as the system used by the user is a traditional system or a Simplified system, or the function of the test client's area settings !! I only know that in addition to getting client browser information in ASP, you can also get system / version with JScript Navigator objects. See MSDN for details Q: I want to get a TR string now how to get a TR string now? How can I use CreateElement? Q: What is the regular expression of the naming group in JavaScript, then how does it take to replace or remove the value of the name match? Str = "123456789324"; Alert (Str.Replace (/ (/ D {4}) (/ D {5}) / g, "$ 1- $ 2- $ 3")); Q: How do I display it? Heroes help me see my code: <% id = request ("id") server.createObject ("adoDb.recordset") ssql = "select img from mynews where id = ' "& id &" '"RSPIC.Open SSQL, CONN, 3, 3 Response.ContentType =" Image / * "Response.binaryWrite RSPIC (" IMG "). getchunk (7500000)' response.binarywrite rs.fields (" logo_img ") Response.write (" end of the file "rspic.close set rspic = NOTHING%> Take a look at whether your ASP file contains HTML code, if there is, then delete, otherwise it does not appear image, SQL Server storage image data will filter out the last / 0 endue, after removing, add / 0 end character response.binarywrite rs.fields ("logo_img") & chrb (0) Q: Data type problem for parameters Function editit (id) {page = "admin =" ID window.Open (Page, 'Editing User', 'Width = 500, Height = 350')} RS ("UserID") is a varchar type. When its value is a number, such as "0001", the above program is normal, but if its value is a string, if it is "Student", the program will report an error: 'Student' definition. Ask a master how to solve it? ? The parameter variable type of the pass value is not defined, you are passing as a variable, and this variable is not defined, the runtime will capture this error, plus quotation marks, as a constant, will not report error Q: Ask for simple and efficient judgment IE version of JS With (Navigator) {alert (appname == "Microsoft Internet Explorer" && paraSeint (appversion) == 4); Q: How do I determine whether XMLHTTP successfully reads the content of the webpage? Var obj = new activityXObject ("Microsoft.xmlhttp"); Obj.Open ("POST", "Server.asp? SEL =" STR, FALSE); Obj.send (); ---------------- Execute Obj.send (); how to determine if XMLHTTP successfully reads the content of the webpage? Try: if (Obj.status == 200) gethtml = obj.ResponseText; Note: Obj.Open ("post", "server.asp? SEL =" str, true); // Last a parameter must be ture asynchronous transmission Q: WINDOW.SHOWMODELESSDIALOG has produced this window, how can you change the size of this window?
