好的,所以这是一个两部分问题
FIDDLE:http://jsfiddle.net/aujqU/575/
问题1: 我在这里有这个表单,当我选择字段时不会删除输入文本。我认为它可能是"占位符"标签。然后我在这里阅读其他与"占位符"相关的问题。并发现它为HTML5功能提供了属性,但显然这并不适用于此。我正在使用jQuery验证表单。
问题2: 当用户没有输入所需信息时,jQuery将生成一个"标签:错误"字段可以设置我想要的样式。当表单填写不正确时,它不会填充错误字段。它只是提供了浏览器的默认值。有什么想法..?
<div id="form-frame">
<h3>Schedule a Free Security Review</h3>
<p>Fill out the form and a Security Specialist will contact you at the phone number below about offers.</p>
<p>All fields required.</p>
<form id="contactForm" method="POST" action="">
<input type="text" id="first_name" name="first_name" minlength="5" maxlength="255" placeholder="First Name" value="" required />
<input type="text" id="last_name" name="last_name" minlength="2" maxlength="255" placeholder="Last Name" value="" required />
<input type="hidden" id="state" name="state" value="" />
<input type="text" id="email" name="email" minlength="25" maxlength="255" placeholder="Email" value="" required />
<input type="text" id="postal_code" name="postal_code" minlength="5" maxlength="10" placeholder="Zip Code" value="" required />
<input type="text" id="phone_primary" name="phone_primary" minlength="11" maxlength="12" placeholder="Phone" value="" required />
<input type="submit" value="Submit" />
</form>
<h6>* I agree to receive telemarketing calls at the telephone number provided above.</h6>
<p>Or Call Us At <span> 888-888-8888</span>
</p>
</div>
$('#contactForm').validate({
onfocusout: function (element) {
this.element(element);
},
rules: {
first_name: 'required',
last_name: 'required',
state: 'required',
email: 'required',
postal_code: 'required',
phone_primary: 'required'
},
messages: {
first_name: 'Please enter your first name',
last_name: 'Please enter your last name',
email: 'Please enter your email',
postal_code: 'Please enter your zip code',
phone_primary: 'Please enter your phone number'
}
});
答案 0 :(得分:1)
广告。问题1 :正如评论中的人所说,这取决于浏览器。根据{{3}}:
用户代理应将此提示提供给用户[...],例如通过将其显示在空白的未聚焦控件中并以其他方式隐藏它。
不幸的是,并非所有浏览器都遵循此建议,例如当字段聚焦时,最新版本的Chrome不会隐藏占位符。当然,你可以使用Javascript处理它。
但是,请记住,它有点滥用占位符,因为(同样,根据规范)它们应该用作提示,而不是标签。
广告。问题2 :已经回答了几次,例如latest W3C spec draft。请查看代码here的改进版本:
// Problem no.2 - added http://ajax.aspnetcdn.com/ajax/jquery.validate/1.13.0/jquery.validate.min.js to the "External resources" in jsfiddle and it started working as expected
$('#contactForm').validate({
onfocusout: function (element) {
this.element(element);
},
rules: {
first_name: 'required',
last_name: 'required',
state: 'required',
email: 'required',
postal_code: 'required',
phone_primary: 'required'
},
messages: {
first_name: 'Please enter your first name',
last_name: 'Please enter your last name',
email: 'Please enter your email',
postal_code: 'Please enter your zip code',
phone_primary: 'Please enter your phone number'
}
});
// Problem no. 1
$('input[type=text]').focus(function () {
this['data-placeholder_old'] = this.placeholder;
this.placeholder = '';
});
$('input[type=text]').blur(function () {
this.placeholder = this['data-placeholder_old'] || '';
})
为了验证工作,我只将jquery.validate插件附加到小提琴。