输入文字后保持标签位置
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我正在尝试使用formspree向我的网站添加一个简单的联系表单。我在网上看到一些看起来很棒的造型但是我无法阻止标签回到原来的位置,从而超越刚刚输入的内容。
我已经尝试更改label-content类的转换值但是没有区别,我不确定某些java脚本是否比纯css更好。
#contactform,
.form {
margin-top: 2rem;
}
.field {
border: none;
position: relative;
z-index: 1;
margin: 0 1em 0 0;
width: 100%;
vertical-align: top;
overflow: hidden;
}
.field:nth-child(3) {
margin-right: 0;
}
.input {
position: relative;
display: block;
float: right;
border: none;
border-radius: 0;
-webkit-appearance: none;
width: 100%;
background: transparent;
padding: 0.5em;
margin-bottom: 2em;
z-index: 100;
height: 2rem;
}
textarea.input {
resize: none;
padding-bottom: 0;
}
.input:focus {
outline: none;
}
.label {
display: inline-block;
float: right;
color: #0C6333;
font-weight: bold;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
width: 100%;
position: absolute;
text-align: left;
padding: 0.5em 0;
pointer-events: none;
font-size: 1em;
}
.label::before,
.label::after {
content: '';
position: absolute;
width: 100%;
left: 0;
}
.label::before {
height: 100%;
background: #fff;
top: 0;
-webkit-transform: translate3d(0, -100%, 0);
transform: translate3d(0, -100%, 0);
-webkit-transition: -webkit-transform 0.3s;
transition: transform 0.3s;
}
.label::after {
height: 2px;
background: #0C6333;
top: 100%;
-webkit-transition: opacity 0.3s;
transition: opacity 0.3s;
}
.label-content {
position: relative;
display: block;
width: 100%;
padding: 0;
-webkit-transform-origin: 0 0;
transform-origin: 0 0;
-webkit-transition: -webkit-transform 0.3s, color 0.3s;
transition: transform 0.3s, color 0.3s;
}
.input:focus,
.input--filled .input {
opacity: 1;
-webkit-transition: opacity 0s 0.3s;
transition: opacity 0s 0.3s;
}
.input:focus+.label::before,
.input--filled .label::before {
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
.input:focus+.label .label-content,
.input--filled .label .label-content {
color: #cbc4c6;
-webkit-transform: translate3d(0, 2.1em, 0) scale3d(0.65, 0.65, 1);
transform: translate3d(0, 2.1em, 0) scale3d(0.65, 0.65, 1);
}
.button,
input[type=submit] {
-webkit-appearance: none;
border: none;
border-radius: 0.25rem;
padding: 0.5em;
color: #fff;
background-color: #0C6333;
transition: all 0.3s ease-out;
-webkit-box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.18), 0 2px 10px 0 rgba(0, 0, 0, 0.15);
-moz-box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.18), 0 2px 10px 0 rgba(0, 0, 0, 0.15);
box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.18), 0 2px 10px 0 rgba(0, 0, 0, 0.15);
}
.button:hover,
.button:focus,
.button:active {
-webkit-box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.23), 0 4px 15px 0 rgba(0, 0, 0, 0.20);
-moz-box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.23), 0 4px 15px 0 rgba(0, 0, 0, 0.20);
box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.23), 0 4px 15px 0 rgba(0, 0, 0, 0.20);
}
<form class="form" id="contactform" method="POST">
<fieldset class="field">
<input class="input" type="text" name="name" id="inputForm" required>
<label class="label" for="name"><span name="label" class="label-content">Your name</span></label>
</fieldset>
<fieldset class="field">
<input class="input" type="email" id="inputForm" name="_replyto" required>
<label class="label" for="_replyto"><span class="label-content">Your email</span></label>
</fieldset>
<fieldset class="field">
<textarea class="input" name="message" id="inputForm" rows="1" required></textarea>
<label class="label" for="message"><span class="label-content">Your message</span></label>
</fieldset>
<input class="hidden" type="text" name="_gotcha" style="display:none">
<input class="hidden" type="hidden" name="_subject" value="Message via contact form">
<input type="hidden" name="_next" value="" />
<fieldset class="field">
<input class="button submit" type="submit" value="Send">
</fieldset>
</form>
答案
您的解决方案的问题可以使用一些javascript来完成,因为CSS不支持输入状态,即空或填充。
您可以在value
和input
中添加一个空的textarea
属性,并添加一个onkeyup
监听器以使用用户的输入填充value
属性。因此输入字段将如下所示:
<input class="input"
type="text"
name="name"
id="inputForm"
onkeyup="this.setAttribute('value', this.value);"
value="" required>
现在您可以根据需要选择“非空”输入样式,您可以查看下面的CSS作为示例
input:not([value=""]):not(:focus) + label .label-content,
textarea:not([value=""]):not(:focus) + label .label-content {
-webkit-transform: translate3d(0, -100%, 0);
transform: translate3d(0, -100%, 0);
font-size: 10px;
}
你可以找到一个工作小提琴here,我很乐意回答你有任何其他问题。
另一答案
我认为这可能是一个简单的解决方案。
var inputs = document.getElementsByClassName('input');
for(var i = 0; i < inputs.length; i++){
inputs[i].onchange = function(){
(this.value) ? this.className = 'input filled' : this.className = 'input';
}
}
#contactform,
.form {
margin-top: 2rem;
}
.field {
border: none;
position: relative;
z-index: 1;
margin: 0 1em 0 0;
width: 100%;
vertical-align: top;
overflow: hidden;
}
.field:nth-child(3) {
margin-right: 0;
}
.input {
position: relative;
display: block;
float: right;
border: none;
border-radius: 0;
-webkit-appearance: none;
width: 100%;
background: transparent;
padding: 0.5em;
margin-bottom: 2em;
z-index: 100;
height: 2rem;
}
textarea.input {
resize: none;
padding-bottom: 0;
}
.input:focus {
outline: none;
}
.label {
display: inline-block;
float: right;
color: #0C6333;
font-weight: bold;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
width: 100%;
position: absolute;
text-align: left;
padding: 0.5em 0;
pointer-events: none;
font-size: 1em;
}
.label::before,
.label::after {
content: '';
position: absolute;
width: 100%;
left: 0;
}
.label::before {
height: 100%;
background: #fff;
top: 0;
-webkit-transform: translate3d(0, -100%, 0);
transform: translate3d(0, -100%, 0);
-webkit-transition: -webkit-transform 0.3s;
transition: transform 0.3s;
}
.label::after {
height: 2px;
background: #0C6333;
top: 100%;
-webkit-transition: opacity 0.3s;
transition: opacity 0.3s;
}
.label-content {
position: relative;
display: block;
width: 100%;
padding: 0;
-webkit-transform-origin: 0 0;
transform-origin: 0 0;
-webkit-transition: -webkit-transform 0.3s, color 0.3s;
transition: transform 0.3s, color 0.3s;
}
.input:focus,
.input--filled .input {
opacity: 1;
-webkit-transition: opacity 0s 0.3s;
transition: opacity 0s 0.3s;
}
.input:focus+.label::before,
.input.filled+.label::before {
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}
.input:focus+.label .label-content,
.input.filled+.label .label-content {
color: #cbc4c6;
-webkit-transform: translate3d(0, 2.1em, 0) scale3d(0.65, 0.65, 1);
transform: translate3d(0, 2.1em, 0) scale3d(0.65, 0.65, 1);
}
.button,
input[type=submit] {
-webkit-appearance: none;
border: none;
border-radius: 0.25rem;
padding: 0.5em;
color: #fff;
background-color: #0C6333;
transition: all 0.3s ease-out;
-webkit-box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.18), 0 2px 10px 0 rgba(0, 0, 0, 0.15);
-moz-box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.18), 0 2px 10px 0 rgba(0, 0, 0, 0.15);
box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.18), 0 2px 10px 0 rgba(0, 0, 0, 0.15);
}
.button:hover,
.button:focus,
.button:active {
-webkit-box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.23), 0 4px 15px 0 rgba(0, 0, 0, 0.20);
-moz-box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.23), 0 4px 15px 0 rgba(0, 0, 0, 0.20);
box-shadow: 0 5px 11px 0 rgba(0, 0, 0, 0.23), 0 4px 15px 0 rgba(0, 0, 0, 0.20);
}
<form class="form" id="contactform" method="POST">
<fieldset class="field">
<input class="input" type="text" name="name" id="inputFormName" required>
<label class="label" for="name" id="name"><span name="label" class="label-content">Your name</span></label>
</fieldset>
<fieldset class="field">
<input class="input" type="email" id="inputFormEmail" name="_replyto" required>
<label class="label" for="_replyto" id="_replyto"><span class="label-content">Your email</span></label>
</fieldset>
<fieldset class="field">
<textarea class="input" name="message" id="inputFormMessage" rows="1" required></textarea>
<label class="label" for="message" id="message"><span class="label-content">Your message</span></label>
</fieldset>
<input class="hidden" type="text" name="_gotcha" style="display:none">
<input class="hidden" type="hidden" name="_subject" value="Message via contact form">
<input type="hidden" name="_next" value="" />
<fieldset class="field">
<input class="button submit" type="submit" value="Send">
</fieldset>
</form>
另一答案
我非常接近这个解决方案:CodePen Here!
我所做的是将转换设置添加到input:valid
元素中:
input:valid + .label .label-content, .input--filled .label .label-content {
color: #cbc4c6;
-webkit-transform: translate3d(0, 2.1em, 0) scale3d(0.65, 0.65, 1);
transform: translate3d(0, 2.1em, 0) scale3d(0.65, 0.65, 1);
}
这可以满足要求,但只有在添加的信息正确的情况下,例如电子邮件输入看起来像:example@example.com,我也无法让textarea工作,可能值得使用<input type="text">
而不是<textarea>
我会继续努力,但说实话,JavaScript解决方案最有效
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