An example of an event application in a jquery text box is an input mailbox
- 2020-03-30 02:50:40
- OfStack
Event application in the text box: take the input mailbox as an example, as shown in the figure:
< img SRC = "border = 0 / / files.jb51.net/file_images/article/201405/201405061116509.gif? 20144611174 ">
The code is as follows:
< img SRC = "border = 0 / / files.jb51.net/file_images/article/201405/201405061116509.gif? 20144611174 ">
The code is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>jquery Event application in text box </title>
<style type="text/css">
body{ font-size:13px;}
.divInit{ width:390px; height:55px; line-height:55px; padding-left:20px;}
.txtInit{ border:solid 1px #666; padding:3px; background-image:url('Images/bg_email_input.gif');}
.spnInit{ width:179px; height:40px; line-height:40px; float:right; margin-top:8px; padding-left:10px; background-repeat:no-repeat;}
.divBlur{ background-color:#FEEEC2;}
.txtBlur{ border:solid 1px #666; padding:3px; background-image:url('Images/bg_email_input2.gif');}
.spnBlur{ background-image:url('Images/bg_email_wrong.gif');}
.divFocu{ background-color:#EDFFD5;}
.spnSucc{ background-image:url('Images/pic_Email_ok.gif'); margin-top:20px;}
</style>
<script src="Scripts/jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
<script src="Scripts/jquery-1.4.1.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$("#txtEmail").trigger("focus"); //By default, the text box gets focus
$("#txtEmail").focus(function () { //The text box gets the focus event
$(this).removeClass("txtBlur").addClass("txtInit");
$("#email").removeClass("divBlur").addClass("divFocu");
$("#spnTip").removeClass("spnBlur").removeClass("spnSucc").html(" Please enter your usual email address! ");
});
$("#txtEmail").blur(function () { //Text box missing focus event
var vTxt = $("#txtEmail").val();
if (vTxt.length == 0) { //Whether a mailbox is entered in the text box
$(this).removeClass("txtInit").addClass("txtBlur");
$("# email").removeClass("divFocu").addClass("divBlur");
$("#spnTip").addClass("spnBlur").html(" Email address cannot be empty! ");
}
else { //Check that the mailbox format is correct
if (!chkEmail(vTxt)) { //If it's not correct
$(this).removeClass("txtInit").addClass("txtBlur");
$("#email").removeClass("divFocu").addClass("divBlur");
$("#spnTip").addClass("spnBlur").html(" Incorrect mailbox format! ");
}
else { //If the correct
$(this).removeClass("txtBlur").addClass("txtInit");
$("#email").removeClass("divFocu");
$("#spnTip").removeClass("spnBlur").addClass("spnSucc").html("");
}
}
});
function chkEmail(strEmail) {
var vChk = /^w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*$/;
if (!vChk.test(strEmail)) {
return false;
}
else {
return true;
}
}
});
</script>
</head>
<body>
<form id="form1" action="#">
<div id="email" class="divInit"> email :
<span id="spnTip" class="spnInit"></span>
<input type="text" id="txtEmail" class="txtInit" />
</div>
</form>
</body>
</html>