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Let's take a look at this example!
Copy codeThe Code is as follows:
<Html>
<Head>
<Title> jqueryDemo: quanjiaoNum </title>
<Script src = "jquery. js" src = "jquery. js" type = "text/javascript"> </script>
<Script type = "text/javascript"> <! --
Function changeNum (){
Var qjNum = $ ("input [@ name = qjNum]"). val ();
Var toAscii = qjNum. charCodeAt ();
If (toAscii> 65295 & toAscii <65306 & qjNum. length = 11)
{
Var toBack = 0;
Var temp = 0;
Var unite = "";
For (var I = 0; I <qjNum. length; I ++)
{
ToAscii = qjNum. charCodeAt (I );
ToBack = toAscii-65248;
Temp = String. fromCharCode (toBack );
Unite = unite + temp;
}
Alert (unite );
Return true;
}
If (toAscii> 47 & toAscii <58 & qjNum. length = 11)
{
Alert (qjNum );
Return true;
}
Else {
Alert ("enter the correct mobile phone number ");
Document. myform. qjNum. value = "";
Return false;
}
}
// --> </Script>
</Head>
<Form name = "myform" action = "">
Convert Chinese numbers to Arabic numerals: <input type = "text" id = "qjNum" name = "qjNum"/> <input type = "button" value = "Submit" onclick = "changeNum () "/>
</Form>
</Html>
This is a mobile phone number judgment problem! In addition, please note that jquery is also used! Remember to introduce it ......
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