<! DOCTYPEHtml>
<Htmllang="EN">
<Head>
<Metacharset="UTF-8">
<Title>document</Title>
<Style>
Label {
DisplayInline-block;
Width80px
Text-align:Right
}
span {
ColorRed
}
</Style>
</Head>
<Body>
<P><LabelFor="Username">User name:</Label><InputType="Text"Id="Username"Onblur="Usernameonblur ()"onkeydown="Usernameenterevent (Event"/><SpanId="Usernamewarn"></Span></P>
<P><LabelFor="Password">Password:</Label><InputType="Password"Id="Password"Onblur="Passwordonblur ()"onkeydown="Passwordenterevent (Event"/><SpanId="Passwordwarn"></Span></P>
<P><LabelFor="Repassword">Confirm Password:</Label><InputType="Password"Id="Repassword"Onblur="Repasswordonblur ()"onkeydown="Repasswordenterevent (Event"/><SpanId="Repasswordwarn"></Span></P>
<P><buttononclick="Register ()">Registered</button></P>
</Body>
<Script>
VarUsernameele =Document.getElementById ("username");
VarUsernamewarnele =Document.getElementById ("Usernamewarn");
VarUsernameregexp =/^ (\[email protected]\w+\.\w+) | (1[3458]\d{9}) $/;
VarPasswordele =Document.getElementById ("Password");
VarPasswordwarnele =Document.getElementById ("Passwordwarn");
VarPasswordregexp =/^[0-9a-za-z]{6,12}$/;
VarRepasswordele =Document.getElementById ("Repassword");
var Repasswordwarnele = document.getElementById ("Repasswordwarn"); function Registervalidate () {var count = 0;//Clear all Authentication usernamewarnele.innerhtml = ""; passwordwarnele.innerhtml = ""; repasswordwarnele.innerhtml = ""; Verify user name Count + = Usernamevalidate (); Verify password Count + = Passwordvalidate (); Confirm Password Count + = Repasswordvalidate (); return count = = 0? True:false; }//Register function register () {//verify var flag = Registervalidate (), if (flag) {location.href = "hi.html";} else {alert ("register Failure "); }}//Verify user name function Usernamevalidate () {usernamewarnele.innerhtml = ""; if (Usernameele.value = = "") {usernamewarnele.innerhtml = "username cannot be empty! "; return 1; } else if (!usernameregexp.test (Usernameele.value)) {usernamewarnele.innerhtml = "username can only be mailbox or mobile number! "; return 1; } return 0; }//Verify the Password function passwordvalidate () {passwordwarnele.innerhtml = ""; if (Passwordele.value = = "") {passwordwarnele.innerhtml = "password cannot be empty! "; return 1; } else if (!passwordregexp.test (Passwordele.value)) {passwordwarnele.innerhtml = "Password can only be composed of 6 to 12 digits of English letters or numbers!" "; return 1; } return 0; }//Verify that the password function repasswordvalidate () {repasswordwarnele.innerhtml = ""; if (Repasswordele.value = = "") {repasswordwarnele.innerhtml = "password cannot be empty! "; return 1; } else if (passwordele.value! = repasswordele.value) {repasswordwarnele.innerhtml = "The password entered is inconsistent! "; Console.info (Passwordele.value); return 1; } return 0; }//user name loses focus function Usernameonblur () {//Verify user name Usernamevalidate ();}//user name loses focus function Passwordonblur () {//verify user name Passwo Rdvalidate (); }//user name loses focus function Repasswordonblur () {//Verify user name Repasswordvalidate ();}//User name Carriage return event function usernameenterevent (event) {V Ar eventObj = Event | | window.event; if (Eventobj.keycode = = =) {Passwordele.focus ();}} Password return event function passwordenterevent () {var eventObj = event | | window.event; if (eventobj.keycode = = =) {Repasswordel E.focus (); }}//Password return event function passwordenterevent () {var eventObj = event | | window.event; if (eventobj.keycode = = =) {Repasswo Rdele.focus (); }}</script≫
Determine the form text box (if you lose focus)
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