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Web Design: an example of automatic validation function for JavaScript implementation

Source: Internet
Author: User
Tags format integer return trim
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javascript| Function | design | Web page design

Test.htm

1<!--#include file= "Message.inc"-->
234<title> New Document </TITLE>
5 <meta http-equiv= "Content-type" content= "text/html"; Charset=shift_jis "/>
6 <meta http-equiv= "Pragma" content= "No-cache" >
7 <meta http-equiv= "Cache-control" content= "No-cache" >
8 <meta http-equiv= "expires" content= "0" >
9<script src= "Common.js" ></script>
10<script src= "Validate.js" ></script>
11
1213
14<body>
15<form method=post action= "" >
16id<input type= "text" id= "Txtint" name= "Txtint" maxlength= "6" feildtype= "integer" msg= ",<%=imsg0002%>" > <br>
17id<input type= "text" id= "Txtint" name= "Txtint" maxlength= "6" feildtype= "integer" msg= ",<%=imsg0002%>" > <br>
18id<input type= "text" id= "Txtint" name= "Txtint" maxlength= "6" feildtype= "integer" msg= ",<%=imsg0002%>" > <br>
19id<input type= "text" id= "Txtint" name= "Txtint" maxlength= "6" feildtype= "integer" msg= ",<%=imsg0002%>" > <br>
20
21 name <input type= "text" id= "txtstring" name= "txtstring" maxlength= "5" feildtype= "string" msg= "&LT;%=IMSG0003%&GT; <%=IMSG0004%> "mustitem=" true ><br>
22 name <input type= "text" id= "txtstring" name= "txtstring" maxlength= "5" feildtype= "string" msg= "&LT;%=IMSG0003%&GT; <%=IMSG0004%> "mustitem=" true ><br>
23 name <input type= "text" id= "txtstring" name= "txtstring" maxlength= "5" feildtype= "string" msg= "&LT;%=IMSG0003%&GT; <%=IMSG0004%> "mustitem=" true ><br>
24
25 name 2<input type= "text" id= "Txtstr" name= "Txtstr" maxlength= "5" feildtype= "string" msg= "<%=imsg0003%>,<% =imsg0004%> "mustitem=" true ><br>
26<input type= "button" value= "Submit" >
27<script language= "JavaScript" >
28<!--
29//validate ()
30//-->
31</script>
32</form>
33</body>
3435

Validate.js

1function Validate () {
2
3//var objs = document.all;
4//var Elements = document.getElementsByTagName ("*");
5 var Elements;
6 Var Ctlarray;
7 var ctlarrayname;
8 var i, J;
9 var elLen, Arrlen;
Ten Var msgs;
11
Elements = document.getElementsByTagName ("input");
Arrname = "";
14
For (i in Elements) {
ElLen = Elements[i].length;
17
if (ElLen > 1) {
Ctlarray = Elements[i];
Arrlen = Ctlarray.length;
21st
if (arrname!= ctlarray[0].name) {
Arrname = Ctlarray[0].name;
24
for (J=0 J < Arrlen; J + +) {
if (CheckValue (ctlarray[j]) = = False) {
return false;
28}
29}
30
31}
32
}else{
34
if (CheckValue (elements[i]) = = False) {
return false;
37}
38}
39}
40
The return is true;
42}
43
44function CheckValue (obj) {
45
the Var Len;
len = obj.maxlength;
48
if (Obj.type = = "Text") {
50
Wuyi//if (obj.msg!= undefined) {
if (obj.msg) {
Msgs = Obj.msg.split (",");
' Else {
The return is true;
56}
57
(Trim (obj.value) = = "" && obj.mustitem && Obj.mustitem = = "true") {
Alert (msgs[0]);
Getfocusselect (obj);
return false;
}else {
63
if (Trim (obj.value)!= "" && obj.feildtype && Obj.feildtype = = "Integer") {
65
if (Checknumlen (obj.value, len) = = False) {
Alert (msgs[1]);
Getfocusselect (obj);
return false;
70}
71
' Else if ' (Trim (obj.value)!= "" && obj.feildtype && Obj.feildtype = = "string") {
73
Getlenthbybyte (Trim (obj.value) > Len) {
Alert (msgs[1]);
Getfocusselect (obj);
The return false;
78}
79}
80}
81}
82
83}

Message.inc

1<%
2Const IMSG0001 = "ID must be entered! "
3Const IMSG0002 = "id input format Error!" "
4Const IMSG0003 = "Name must be entered!" "
5Const IMSG0004 = "Name Input format Error!" "
6%>



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