0
我尝试执行以下代码:input.length检查工作不
<div class="clear"id="usernameline">username:<input type="text" name="username" id="username" style="border:1px solid #928b8b;"> (at least 3 character)</div>
<div id="usercheck"></div>
<input style="cursor:pointer;border:1px solid #ffffff;background:#c0c0c0;color:#484848" type="button" class="form_button" id="register" value="register!">
<script>
var error1 = '<span style="color:#ff0000">please fill in your username</span>';
var error2 = '<span style="color:#ff0000">please insert at least 3 character</span>';
$("#register").click(function() {
if ($("#username").val() == '') {
$("#usercheck").show();
$("#usercheck").html(error1);
} else if ($("#username").val() != '') {
var user = $("#username").val();
if (user.length <= 3) {
$("#usercheck").html(error2);
} else {
$("#usercheck").hide();
}
}
});
</script>
当我点击注册按钮,如果在输入框中的值长度大于3,$("#usercheck").hide()
不叫,任何人都可以告诉我我的代码有什么问题,任何帮助将不胜感激。
[。您的代码工作正常原样(HTTP:// jsfiddle.net/J4Xwa/) – Pointy 2012-01-16 14:22:44