I am creating a sign in / sign up form with several input fields. I want to know how to trigger a command whenever someone clicks or enters a value in any of the input field.
<form action="/" method="post">
<div class="top-row">
<div class="field-wrap">
<label for="name">
First Name
<span class="req">*</span>
</label>
<input type="text" name="name" required autocomplete="off" />
</div>
<div class="field-wrap">
<label for="lastname">
Last Name
<span class="req">*</span>
</label>
<input type="text" name="lastname" required autocomplete="off"/>
</div>
</div>
<div class="field-wrap">
<label for="email">
Email Address
<span class="req">*</span>
</label>
<input type="email" name="email" required autocomplete="off" />
</div>
<div class="field-wrap">
<label for="password">
Password
<span class="req">*</span>
</label>
<input type="password" name="password" required autocomplete="off" />
</div>
<button type="submit" class="button button-block">Get Started</button>
</form>
I want to be able to create some custom styling with the labels whenever someone tries to input something on the input field.
Here's the CSS I want to add to the tag whenever someone places some value in the tag:
label.active {
transform: translateY(50px);
left: 2px;
font-size: 14px;
}
label.highlight {
color: #fff;
}
Here's my non-working Javascript code:
const inputs = document.querySelectorAll('input');
inputs.addEventListener('keyup focus blur', ()=> {
if(inputs.length > 0) {
inputs.previousElementSibling.classList.add('active highlight')
} else {
inputs.previousElementSibling.classList.remove('active highlight')
}
})
You mean this?
Change the label class if field not empty
function listen(e) { var tgt = e.target; if (tgt.tagName === "INPUT") { tgt.previousElementSibling.classList.toggle('active', tgt.value.trim() !== ""); } } document.getElementById("myForm").addEventListener("input", listen) document.getElementById("myForm").addEventListener("focus", listen) document.getElementById("myForm").addEventListener("blur", listen)
label.active { transform: translateY(50px); left: 2px; font-size: 14px; color:green; }
<form action="/" method="post" id="myForm"> <div class="top-row"> <div class="field-wrap"> <label for="name">First Name <span class="req">*</span></label> <input type="text" name="name" required autocomplete="off" /> </div> <div class="field-wrap"> <label for="lastname">Last Name <span class="req">*</span></label> <input type="text" name="lastname" required autocomplete="off" /> </div> </div> <div class="field-wrap"> <label for="email">Email Address <span class="req">*</span></label> <input type="email" name="email" required autocomplete="off" /> </div> <div class="field-wrap"> <label for="password">Password <span class="req">*</span></label> <input type="password" name="password" required autocomplete="off" /> </div> <button type="submit" class="button button-block">Get Started</button> </form>
You can loop through the elements and attach an event listener to each of the inputs or you can use event delegation on the container as detailed here:
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