JS validation scripts often used

To share with you often use the JS verification script, very practical, like to collect it.

1//================================================================
2//This function is used to limit the number "0" to "9" in the text input box, ".", "-"
3//================================================================
4 function Jhshnumbertext ()
5 {
6 if (!) ( ((Window.event.keyCode >=) && (Window.event.keyCode <= 57))
7 (Window.event.keyCode = Window.event.keyCode = 46)
8 (Window.event.keyCode = 45))
9 {
Ten window.event.keyCode = 0;
11}
//<form name=frm>
//<input type=text name=test value= "onkeypress=" Jhshnumbertext () ">
//<input Type=button Name=submit value=submit>
//</form>
16}
17
18//================================================================
19//This function is used to automatically convert the contents of the input text box into uppercase characters
20//================================================================
function Jhshtouppercase ()
22 {
if ((Window.event.keyCode >=) && (window.event.keyCode <= 122))
24 {
Window.event.keyCode = window.event.keycode-32;
26}
27}
28
29//================================================================
30//This function is used to automatically convert the contents of the Input text box to lowercase characters
31//================================================================
Jhshtolowercase function ()
33 {
if ((Window.event.keyCode >=) && (Window.event.keyCode <= 90))
35 {
Window.event.keyCode = Window.event.keyCode + 32;
37}
38}
39
40///the space before and after the truncation string
The Jhshtrim function (sstring)
42 {
strtmp var;
strtmp = Jhshrtrim (Jhshltrim (sstring));
Strtmp return;
46}
47
/-----------------------------------------------------------------------------------
49//This function is used to truncate the sstring string before a space
/-----------------------------------------------------------------------------------
Wuyi function Jhshltrim (sstring)
52 {
The var sstr,i,istart,sresult = "";
54
SSTR = Sstring.split ("");
IStart =-1;
for (i = 0; i < sstr.length; i++)
58 {
(Sstr[i]!= "")
60 {
IStart = i;
a break;
63}
64}
(IStart = = 1)
{return "";} Indicates that all characters in the sstring are spaces, then returns an empty string
Or else
{return sstring.substring (IStart);}
69}
70
A//-----------------------------------------------------------------------------------
72//This function is used for trailing space truncation of the sstring string
I//-----------------------------------------------------------------------------------
The Jhshrtrim function (sstring)
75 {
The var sstr,i,istart,sresult = "";
SSTR = Sstring.split ("");
IStart =-1;
for (i = sstr.length-1 i >= 0; i--)
80 {
Bayi if (Sstr[i]!= "")
82 {
IStart = i;
The break;
85}
86}
87
if (IStart = 1)
{return "";} Indicates that all characters in the sstring are spaces, then returns an empty string
Or else
sstring.substring {return (0,istart+1);}
92}
93
94
/------------------------------------------------------------------------------------
96//To determine whether the string is a date format,//Standard format: 2004-3-29 12:05 No other formats are allowed
A/------------------------------------------------------------------------------------
IsDate function (datestring)
99 {
if (datestring = null)
The return false;
102
Dilimeter var = '-';
var tempy = ';
The var tempm = ';
The tempd var = ';
107
108 var temph = ';
109 var tempmi = ';
The var TempS = ';
111
112 Var Temparr1,temparr2,temparr3;
113 if (Datestring.length < 8 && datestring.length > 18)
114 return false;
TEMPARR1 = Datestring.split ("");
116 if (Temparr1.length!= 2)
117 return false;
118
119 TEMPARR2 = Temparr1[0].split (Dilimeter);
if (temparr2.length!= 3)
121 return false;
122 tempy = temparr2[0];
123 tempm = temparr2[1];
124 tempd = temparr2[2];
125
126 TEMPARR3 = Temparr1[1].split (': ');
127 if (Temparr2.length < 2 temparr2.length > 3)
128 {
129 return false;
130}
131 temph = temparr3[0];
132 TEMPMI = temparr3[1];
(Temparr2.length = 3)
134 TempS = temparr3[2];
135
136 Var tdatestring;
137 if (temparr3.length = 2)
138 {
139 tdatestring = Tempy + '/' + tempm + '/' +tempd + ' +temph+ ': ' +tempmi;
140}
A.
142 {
143 tdatestring = Tempy + '/' + tempm + '/' +tempd + ' +temph+ ': ' +tempmi+ ': ' +temps;
144}
145 var tempdate = new Date (tdatestring);
146 if (isNaN (tempdate))
147 {
148//alert ("isNaN");
149 return false;
150}
151
152 if (Temparr3.length = 2)
153 {
154//2004-3-29 12:05
(Tempdate.getutcfullyear (). toString () = Tempy) &&
156 (Tempdate.getmonth () = parseint (TEMPM)-1) &&
157 (tempdate.getdate () = = parseint (TEMPD)) &&
158 (tempdate.gethours () = = parseint (temph)) &&
159 (tempdate.getminutes () = = parseint (TEMPMI))
160 {
161 return true;
162}
163 Else
164 {
165 return false;
166}
167}
Or else
169 {
170//2004-3-29 12:05:30
171 if (Tempdate.getutcfullyear (). toString () = Tempy) &&
172 (tempdate.getmonth () = parseint (TEMPM)-1) &&
173 (tempdate.getdate () = = parseint (TEMPD)) &&
174 (tempdate.gethours () = = parseint (temph)) &&
175 (tempdate.getminutes () = = parseint (TEMPMI)) &&
176 (tempdate.getseconds () = = parseint (TempS))
177 {
178 return true;
179}
180 Else
181 {
The return false;
183}
184}
185
186}
187
188//------------------------------------------------------------------------------------
189//Judge string date size,//Standard format: 2004-3-29 12:05
190//Use the validity of the date before the judgement
191//If DateString1 is later than DateString2, returns true;
A/------------------------------------------------------------------------------------
193
194 function Datecompare (DateString1, DateString2)
195 {
196 var i;
197 var dilimeter = '-';
198
199 var temparr1,temparr2;
TEMPARR1 = Datestring1.split (Dilimeter);
201 TEMPARR2 = Datestring2.split (Dilimeter);
202
203 var tDateString1 = "";
204 for (i=0; i<temparr1.length; i++)
205 {
206 if (I < temparr1.length-1)
207 TDateString1 + = temparr1[i]+ "/";
Or else
209 TDateString1 + + temparr1[i];
210}
211 var tDateString2 = "";
212 for (i=0; i<temparr2.length; i++)
213 {
214 if (I < temparr2.length-1)
215 TDateString2 + = temparr2[i]+ "/";
216 Else
217 tDateString2 + + temparr2[i];
218
219}
220
221 var tempDate1 = new Date (TDATESTRING1);
222 var tempDate2 = new Date (tDateString2);
223 if (isNaN (tempDate1) isNaN (TEMPDATE2))
224 {
return false;
226}
227
228//2004-3-29 12:05:30
229 if (Tempdate1.getutcfullyear () < Tempdate2.getutcfullyear ())
230 return false;
231 if (tempdate1.getutcfullyear () > Tempdate2.getutcfullyear ())
232 return true;
233 if (Tempdate1.getmonth () < Tempdate2.getmonth ())
234 return false;
235 if (Tempdate1.getmonth () > Tempdate2.getmonth ())
236 return true;
237 if (tempdate1.getdate () < Tempdate2.getdate ())
238 return false;
239 if (Tempdate1.getdate () > Tempdate2.getdate ())
The return true;
241 if (tempdate1.gethours () < tempdate2.gethours ())
242 return false;
243 if (tempdate1.gethours () > Tempdate2.gethours ())
244 return true;
245 if (Tempdate1.getminutes () < Tempdate2.getminutes ())
246 return false;
247 if (Tempdate1.getminutes () > Tempdate2.getminutes ())
248 return true;
249 if (Tempdate1.getseconds () < Tempdate2.getseconds ())
return false;
251 if (Tempdate1.getseconds () > Tempdate2.getseconds ())
252 return true;
253//If Equal returns False
254 return false;
255}
256