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Only positive integer input

Source: Internet
Author: User
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This is a good alternative when some Browsers Do not support type number.

 

 

 1 <! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en"
 2 Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>
 3 <HTML xmlns = "http://www.w3.org/1999/xhtml">
 4 <Head>
 5 <Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
 6 <Title> positive integer input only </title>
7    
 8 </Head>
 9    
 10 <Body>
 11 <SCRIPT>
 12       //  Void function (window, undefined ){  
  13 Window. onload = Function (){
 14           VaR Doc = Document, list = Doc. getelementsbytagname ('input ');
 15            
 16            
 17 Availablenumberinput (list );
 18 }
 19       Function Availablenumberinput (inputs ){
 20           VaR Len = inputs. length, I, reg =/^ (8 | 9 | 4 [8-9] | 5 [0-7] | 9 [6-9] | 10 [0-5]) $/ig;
 21            
 22 Document. onmousedown = Function (){
 23                Try {
 24 Document. selection. Empty ()
 25 } Catch (E ){
 26 Getselection (). removeallranges ()
 27 }
 28 }
 29          For (I = Len; I> 0; (inputs [-- I]. onkeydown = Function (E ){
 30 E = Window. Event | E;
 31               VaR Target = E. srcelement | e.tar get, code = E. charcode | E. keycode;
 32 Reg. lastindex = 0;
 33               If (! Reg. Test (CODE) | E. shiftkey ){
 34                   Return  False ;
 35 }
 36 Target. value = '0' & (target. value = '');
 37 }, Inputs [I]. oncontextmenu = Function (){
 38               Return   False ;
 39 }), Inputs [I]. style. imemode = 'Disabled '){
 40 }
41 }
 42       //  } (Window );  
  43 </SCRIPT>
 44    
 45 Drag a text string into the input box to see it <br/>
 46 <Input type = "text"/> <br/>
 47 <Input type = "text"/> <br/>
 48 <Input type = "text"/>
49 </Body>
 50 </Html>

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