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Javascript code style property value not updating after Ajax call

I have JS code where I am changing the style of an HTML element based on an AJAX response.
So my code looks like this.
$.ajax(settings).done(function(response) {
const button_submit = document.getElementById("submit")
button_submit.disabled = response[0];
button_submit.style.cursor = '\"' + response[1] + '\"';
button_submit.style.marginTop = '\"' + response[3] + '\"';
document.getElementById("email").style.visibility = '\"' + response[2] + '\"';
})
input[type=text],
select {
width: 100%;
padding: 12px 20px;
display: inline-block;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
font-size: 20px;
margin-bottom: 1.2 rem;
margin-bottom: -6%;
}
#submit {
width: 100%;
background: #f39d13;
background: linear-gradient(to bottom, #f39d13 0, #c64f01 100%);
color: white;
padding: 14px 20px;
margin-top: 4%;
border: none;
border-radius: 4px;
font-size: 20px;
cursor: pointer;
}
#customForm {
border-radius: 5px;
padding: 20px;
margin: auto;
width: 65%;
}
p {
font-size: 12px;
color: gray;
margin-top: 5%;
text-align: center;
}
#email {
visibility: hidden;
font-size: 16px;
color: red;
line-height: -6px;
line-height: 1.6;
text-align: left;
display: block;
}
</head>
<div id="customForm">
<form accept-charset="UTF-8" id="" action="#action" method="POST">
<input name="inf_form_xid" type="hidden" value="dd500cb6988ssd3e0151492cb3eff8cf594" />
<input name="inf_form_name" type="hidden" value="UYTS" />
<input name="if_version" type="hidden" value="1.70.0.4582435" />
<div class="if-field">
<label for="inf_field_Email"></label>
<input id="inf_field_Email" name="inf_field_Email" placeholder="Enter your email address " type="text" /></div>
<div>
<div> </div>
</div>
<label id="email">Please enter a valid email address.</label>
<div class="ifn-submit">
<button id="submit" type="submit">Send Now</button></div>
</form>
</div>
But the style is not changing even after all of the JS function is finished.
I wonder what is wrong with my code.
The response of the AJAX is an array that I am going to put on style properties using JS.
Sample response:
['false', 'pointer', 'hidden', '-3%']

The string 'false' is not the same as the boolean false. The disabled property should be a boolean.
You shouldn't add quotes around the other properties. Quotes are part of the syntax in textual styles, they're not part of the property value itself.
$.ajax(settings).done(function(response) {
const button_submit = document.getElementById("submit")
button_submit.disabled = response[0] === 'true';
button_submit.style.cursor = response[1]';
button_submit.style.marginTop = response[3];
document.getElementById("email").style.visibility = response[2];
})
input[type=text],
select {
width: 100%;
padding: 12px 20px;
display: inline-block;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
font-size: 20px;
margin-bottom: 1.2 rem;
margin-bottom: -6%;
}
#submit {
width: 100%;
background: #f39d13;
background: linear-gradient(to bottom, #f39d13 0, #c64f01 100%);
color: white;
padding: 14px 20px;
margin-top: 4%;
border: none;
border-radius: 4px;
font-size: 20px;
cursor: pointer;
}
#customForm {
border-radius: 5px;
padding: 20px;
margin: auto;
width: 65%;
}
p {
font-size: 12px;
color: gray;
margin-top: 5%;
text-align: center;
}
#email {
visibility: hidden;
font-size: 16px;
color: red;
line-height: -6px;
line-height: 1.6;
text-align: left;
display: block;
}
</head>
<div id="customForm">
<form accept-charset="UTF-8" id="" action="#action" method="POST">
<input name="inf_form_xid" type="hidden" value="dd500cb6988ssd3e0151492cb3eff8cf594" />
<input name="inf_form_name" type="hidden" value="UYTS" />
<input name="if_version" type="hidden" value="1.70.0.4582435" />
<div class="if-field">
<label for="inf_field_Email"></label>
<input id="inf_field_Email" name="inf_field_Email" placeholder="Enter your email address " type="text" /></div>
<div>
<div> </div>
</div>
<label id="email">Please enter a valid email address.</label>
<div class="ifn-submit">
<button id="submit" type="submit">Send Now</button></div>
</form>
</div>

How to highlight the input button by clicking to a button?

I can't code jquery javascript therefore i have no idea how to highlight (border or background change) the submit button for a few seconds. I tried some of the scripts that have been shared on this platform but i wasn't lucky. What code do you suggest?
The button i need to highlight is submitbtn
and the button that needs to highlight it by click is eventbtn
I appreciate the help
Thanks
Edited: I Want to add class to the submit button once the button is clicked
.sidebar {
background-color: black;
width: 33%;
float: right;
}
.submitbtn {
width: 66%;
position: relative;
float: left;
background-color: #407060;
padding: 15px 30px;
border: none;
cursor: pointer;
color: white;
text-transform: uppercase;
}
.eventbtn {
color: white;
border: none;
border-radius: 2px;
padding: 15px 30px;
width: 100%;
background-color: #A73D42;
cursor: pointer;
}
body {
background-color: #f1f1f1
}
<p><input type="submit" value="Submit" class="submitbtn" id="form-submit" /></p>
<div class="sidebar">
<button class="eventbtn" id="highlight"> <<<<<<<<<<< </button>
</div>
h

The key is to remove the highlighting after a few seconds, this can be done with setTimeout() function:
function highlight(id)
{
clearTimeout(highlight.timer);
const el = document.getElementById(id);
//highlight the button
el.classList.add("highlighted");
//remove highlight after 3sec
highlight.timer = setTimeout(() => el.classList.remove("highlighted"), 3000);
}
.sidebar {
background-color: black;
width: 33%;
float: right;
}
.wpcf7-form-control.has-spinner.wpcf7-submit {
width: 66%;
position: relative;
float: left;
background-color: #407060;
padding: 15px 30px;
border: none;
cursor: pointer;
color: white;
text-transform: uppercase;
}
.eventbtn {
color: white;
border: none;
border-radius: 2px;
padding: 15px 30px;
width: 100%;
background-color: #A73D42;
cursor: pointer;
}
body {
background-color: #f1f1f1
}
/* added */
.highlighted
{
box-shadow: 0 0 2em 1px red;
}
.wpcf7-submit {
transition: box-shadow 0.2s;
}
<p><input type="submit" value="Submit" class="wpcf7-form-control has-spinner wpcf7-submit" id="form-submit" /></p>
<div class="sidebar">
<button class="eventbtn" id="highlight" onclick="highlight('form-submit')"> <<<<<<<<<<< </button>
</div>

Do you mean highlight submitbtn when clicking eventbtn?
Add a js to handle the click event, and then add highlight class to submitbtn.
var eventbtn = document.getElementById('highlight');
var submitbtn = document.getElementsByClassName('submitbtn')[0];
eventbtn.addEventListener('mousedown', function () {
submitbtn.classList.add('highlight');
});
eventbtn.addEventListener('mouseup', function () {
submitbtn.classList.remove('highlight');
});
.sidebar {
background-color: black;
width: 33%;
float: right;
}
.submitbtn {
width: 66%;
position: relative;
float: left;
background-color: #407060;
padding: 15px 30px;
border: none;
cursor: pointer;
color: white;
text-transform: uppercase;
}
.eventbtn {
color: white;
border: none;
border-radius: 2px;
padding: 15px 30px;
width: 100%;
background-color: #A73D42;
cursor: pointer;
}
.highlight {
background-color: #8beccc;
}
body {
background-color: #f1f1f1
}
<p><input type="submit" value="Submit" class="submitbtn" id="form-submit" /></p>
<div class="sidebar">
<button class="eventbtn" id="highlight"> <<<<<<<<<<< </button>
</div>

Simply add a class to the element you want to highlight. Then remove the class with the setTimeout function.
Add a class in CSS with a high specificity that contains all visible changes you want to apply. It does not matter what it is. It can be background, border, box-shadow...
In JS use an eventListener to listen to click-events on the button.
Apply the class you have specified in CSS with classList.add().
Add a setTimeout function to remove the class after a specified time with classList.remove()
Vanilla JavaScript:
// button element that will be clicked
var button = document.querySelector('button[class="eventbtn"]'),
// element that should be highlighted
input = document.querySelector('#form-submit'),
// timer in ms
timer = 2000;
// eventListener to execute the script on button click
button.addEventListener('click', function() {
// adds a class to apply CSS changes for the highlighting
input.classList.add('highlight');
// timeout function
setTimeout(function() {
// removes the class after the timer has been reached
input.classList.remove('highlight');
}, timer);
})
#form-submit.highlight {
background-color: yellow;
}
/* original CSS */
.sidebar {
background-color: black;
width: 33%;
float: right;
}
.wpcf7-form-control.has-spinner.wpcf7-submit {
width: 66%;
position: relative;
float: left;
background-color: #407060;
padding: 15px 30px;
border: none;
cursor: pointer;
color: white;
text-transform: uppercase;
}
.eventbtn {
color: white;
border: none;
border-radius: 2px;
padding: 15px 30px;
width: 100%;
background-color: #A73D42;
cursor: pointer;
}
body {
background-color: #f1f1f1
}
<p><input type="submit" value="Submit" class="wpcf7-form-control has-spinner wpcf7-submit" id="form-submit" /></p>
<div class="sidebar">
<button class="eventbtn" id="highlight"><<<<<<<<<<<</button>
</div>
jQuery:
// button element that will be clicked
var $button = $('button[class="eventbtn"]'),
// element that should be highlighted
$input = $('#form-submit'),
// timer in ms
timer = 2000;
//Eventlistener looking for a click event
$button.click(function() {
//adds a class for highlighting
$input.addClass('highlight');
//timeout function
setTimeout(function() {
//removes class for highlighting
$input.removeClass('highlight');
}, timer);
})
#form-submit.highlight {
background-color: yellow;
}
/* original CSS */
.sidebar {
background-color: black;
width: 33%;
float: right;
}
.wpcf7-form-control.has-spinner.wpcf7-submit {
width: 66%;
position: relative;
float: left;
background-color: #407060;
padding: 15px 30px;
border: none;
cursor: pointer;
color: white;
text-transform: uppercase;
}
.eventbtn {
color: white;
border: none;
border-radius: 2px;
padding: 15px 30px;
width: 100%;
background-color: #A73D42;
cursor: pointer;
}
body {
background-color: #f1f1f1
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<p><input type="submit" value="Submit" class="wpcf7-form-control has-spinner wpcf7-submit" id="form-submit" /></p>
<div class="sidebar">
<button class="eventbtn" id="highlight"><<<<<<<<<<<</button>
</div>

I tryed to answer with pure css by using animation and keyframes. My attempt only works the first time and once everytime after you change the target.
(Note that I'm not used to these properties so there may be a better way to do this)
#form-submit{
background-color: transparent;
}
#keyframes changeBackground {
0% {
background-color: orange;
}
99.999% {
background-color: orange;
}
100% {
background-color: transparent;
}
}
#form-submit:target{
animation: changeBackground 1s;
}
<input type="submit" value="submit" id="form-submit" />
highlight
<br>
change target

Radio button does not hide/show section

Description:
I have 3 sections in my page that I want to do, each having a radio button to select an object.
Problem:
I am trying to figure out a problem where when I press the "online radio button" it will show up the section that I need. But when I press the "Face to Face" the online section keeps appearing.
Expected Result:
Each Radio button should work with each section and hide the other one.
HTML CODE:
$(document).ready(function() {
$("#Online").hide();
$("#Face").hide();
$("#Payment").hide();
});
$(document).on("change", "#choice1", function() {
var radioValue = $(this).val();
console.log(radioValue);
if (($(this).value = "Online")) showOnline();
else if (($(this).value = "Face To Face")) showFace();
});
function showOnline() {
$("#Online").show();
$("#Face").hide();
}
function showFace() {
$("#Face").show();
$("#Online").hide();
}
.dropbtn {
background-color: white;
color: black;
padding: 16px;
font-size: 50px;
border: 2px solid;
border-radius: 25px;
}
.dropdown {
position: relative;
display: inline-block;
margin-left: 40%;
margin-top: 8%;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #f1f1f1;
min-width: 350px;
box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2);
z-index: 1;
font-size: 30px;
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
}
.dropdown-content a:hover {
background-color: gray;
}
.dropdown:hover .dropdown-content {
display: block;
}
.dropdown:hover .dropbtn {
background-color: gray;
}
.covid {
margin-left: 10%;
margin-top: 2%;
border: 2px solid;
width: 80%;
font-weight: bold;
}
.covid h2 {
text-align: center;
font-weight: bold;
}
.covid img {
position: absolute;
margin-left: 50%;
height: 200px;
}
.covid p {
font-size: 20px;
margin-left: 20%;
}
.textred {
font-size: 20px;
display: inline;
color: red;
}
.textgreen {
font-size: 20px;
display: inline;
color: green;
}
.status {
margin-left: 10%;
margin-top: 2%;
border: 2px solid;
width: 80%;
font-weight: bold;
}
.status h2 {
text-align: center;
font-weight: bold;
}
.china {
font-size: 20px;
margin-left: 20%;
display: inline;
}
.amazon {
font-size: 20px;
margin-left: 20%;
display: inline;
}
.reviews {
margin-left: 10%;
margin-top: 2%;
border: 2px solid;
width: 80%;
font-weight: bold;
}
.reviews h2 {
text-align: center;
font-weight: bold;
}
.bolded {
font-size: 20px;
display: inline;
}
.stars {
white-space: nowrap;
font-size: 20px;
magrin: 15%;
display: inline;
white-space: pre;
color: yellow;
}
.review {
font-size: 20px;
display: inline;
margin: 20%;
font-weight: normal;
}
.mainscreen {
background-color: white;
height: 1800px;
}
.avatar {
vertical-align: middle;
margin-left: 15%;
margin-top: 1%;
width: 50px;
height: 50px;
border-radius: 50%;
}
.choice1{
margin-left: 45%;
}
.choice3{
margin-left: 43%;
}
.choice4{
margin-left: 41%;
}
.button1{
margin-left: 48%;
}
.notreviews{
margin-top: -9%;
}
<div class="w3-panel w3-white w3-card-4 reviews">
<h2>How will you like your appointment to be?</h2>
<section id="choice1">
<form>
<input
type="radio"
name="choice"
class="choice1"
id="OL"
value="Online"
/>
Online
<input
type="radio"
name="choice"
class="choice2"
id="FTF"
value="Face To Face"
/>
Face To Face
</form>
<br />
<br />
<br />
<button onclick="submitAnswer()" class="button1">
Submit Answer
</button>
</section>
</div>
<!-- Online Section -->
<div class="w3-panel w3-white w3-card-4 reviews" id="Online">
<h2>Online Appointments</h2>
<section id="choice2">
<form>
<input
type="radio"
name="choice2"
class="choice3"
id="ZOOM"
value="Zoom"
/>
Zoom
<input
type="radio"
name="choice2"
class="choice2"
id="MEET"
value="Meet"
/>
Google Meet
</form>
<br />
<br />
<br />
<button onclick="submitOnlineAnswer()" class="button1">
Submit Answer
</button>
</section>
</div>
<!-- FTF Section -->
<div class="w3-panel w3-white w3-card-4 reviews" id="Face">
<h2>Face To Face Appointments</h2>
<section id="choice3">
<form>
<input type="radio" name="choice3" class="choice4" id="Amazon" value="Ama"/> Amazon Rainforst Location
<input type="radio" name="choice3" class="choice2" id="China" value="China" /> China Location
</form>
<br>
<br>
<br>
<button onclick="submitFTFAnswer()" class="button1" >Submit Answer</button>
</section>
</div>
<section id="section">
Jquery Code:
$(document).ready(function() {
$("#Online").hide();
$("#Face").hide();
$("#Payment").hide();
});
$(document).on("change", "#choice1", function() {
var radioValue = $(this).val();
console.log(radioValue);
if (($(this).value = "Online")) showOnline();
else if (($(this).value = "Face To Face")) showFace();
});
function showOnline() {
$("#Online").show();
$("#Face").hide();
}
function showFace() {
$("#Face").show();
$("#Online").hide();
}
What am I doing wrong and how can I fix this?

Jquery appendTo html to a javascript function

building a show your password with a caps lock warning on a form. But need to use appendTo so the HTML can be added to a pre-written shortcode.
Whenever the Html is added by appendTo the Javascript function can not find the added HTML.
code: https://codepen.io/edutize/pen/qBZXmOZ
<div class="memberium-form">
<form name="loginform" id="loginform" action="https://traderonthestreet.com/wp-login.php" method="post">
<input id="learndash-login-form" type="hidden" name="learndash-login-form" value="754942d3df">
<p class="login-username">
<label for="user_login"></label>
<input type="text" name="log" id="user_login" class="input" value="" size="20" placeholder="Email *">
</p>
<p class="login-password">
<label for="user_pass"></label>
<input type="password" name="pwd" id="user_pass" class="input" value="" size="20" placeholder="Password *">
</p>
<p class="login-submit">
<input type="submit" name="wp-submit" id="wp-submit" class="button button-primary" value="Login">
<input type="hidden" name="redirect_to" value="https://traderonthestreet.com/wp-admin/">
</p>
</form>
$(document).ready(function(){
$("<span></span>").appendTo(".login-password").attr("toggle", "#user_pass").addClass("fa fa-fw
fa-eye field-icon toggle-password");
$("<p>WARNING! Caps lock is ON.</p>").appendTo(".login-password").attr("id", "caps");
});
$(".toggle-password").click(function() {
$(this).toggleClass("fa-eye fa-eye-slash");
var input = $($(this).attr("toggle"));
if (input.attr("type") == "password") {
input.attr("type", "text");
} else {
input.attr("type", "password");
}
});
var input = document.getElementById("user_pass");
var text = document.getElementById("caps");
input.addEventListener("keyup", function(event) {
if (event.getModifierState("CapsLock")) {
text.style.display = "block";
} else {
text.style.display = "none"
}
});

You're generating elements inside document ready which usually is initiated later than when the JS is loaded. When the $(".toggle-password").click(function() event listener is attached to .toggle-password, #caps doesn't exists yet.
Either moving the event listener into the document ready after the #caps element is created or moving the #caps element creation outside the document ready will work.
// Jquery appendTo capslock message and eye icons html
$(document).ready(function(){
$("<span></span>").appendTo(".login-password").attr("toggle", "user_pass").addClass("fa fa-fw fa-eye field-icon toggle-password");
$("<p>WARNING! Caps lock is ON.</p>").appendTo(".login-password").attr("id", "caps");
// toggle between classes and change attribute type
$(".toggle-password").click(function() {
$(this).toggleClass("fa-eye fa-eye-slash");
var input = $($(this).attr("toggle"));
if (input.attr("type") == "password") {
input.attr("type", "text");
} else {
input.attr("type", "password");
}
});
// capslock function change style from display none to block
var input = document.getElementById("user_pass");
var text = document.getElementById("caps");
document.addEventListener("keyup", function(event) {
if (event.getModifierState("CapsLock")) {
text.style.display = "block";
} else {
text.style.display = "none"
}
});
});
.login-username input[type=text] {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
padding: 12px;
padding-left: 15px;
border: none;
border-radius: 4px;
resize: vertical;
font-family: 'Roboto', sans-serif;
font-size: 15px;
outline: none;
background-color: #f0f0f0;
margin-top: 10px;
margin-bottom: 10px;
transition: .1s;
}
.login-username input[type=text]:hover {
background-color: #e6e6e6;
transform: scale(1.01);
}
.login-password input[type=password] {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
padding: 12px;
padding-left: 15px;
border: none;
border-radius: 4px;
resize: vertical;
font-family: 'Roboto', sans-serif;
font-size: 15px;
outline: none;
background-color: #f0f0f0;
margin-top: 10px;
margin-bottom: 10px;
transition: .1s;
}
.login-password input[type=password]:hover {
background-color: #e6e6e6;
transform: scale(1.01);
}
.login-password input[type=text] {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
padding: 12px;
padding-left: 15px;
border: none;
border-radius: 4px;
resize: vertical;
font-family: 'Roboto', sans-serif;
font-size: 15px;
outline: none;
background-color: #f0f0f0;
margin-top: 10px;
margin-bottom: 10px;
transition: .1s;
}
.login-password input[type=text]:hover {
background-color: #e6e6e6;
transform: scale(1.01);
}
#caps {
display: none;
margin-left: auto;
margin-right: auto;
width: 50%;
color: red;
}
.field-icon {
margin-left: 72.5%;
margin-right: auto;
z-index: 2;
position: absolute;
margin-top: -40px;
color: #8A8A8A;
}
.login-submit input[type=submit] {
display: block;
margin-left: auto;
margin-right: auto;
width: 50%;
padding-top: 20px;
padding-bottom: 20px;
background-color: #24af61;
border: #24af61;
border-radius: 5px !important;
border-width: 1.5px;
color: white;
cursor: pointer;
display: block;
border-radius: 5px;
font-family: 'Poppins', sans-serif;
font-size: 18px;
transition: 0.3s;
font-weight: bold;
margin: 30px auto;
}
.login-submit input[type=submit]:hover {
background-color: #ffffff;
-webkit-box-shadow: 0px 0px 12px 4px rgba(0,0,0,0.11);
-moz-box-shadow: 0px 0px 12px 4px rgba(0,0,0,0.11);
box-shadow: 0px 0px 12px 4px rgba(0,0,0,0.11);
transform: scale(1.05);
color: #24af61;
border-style: solid;
border: #24af61;
border-width: 1.5px;
border-radius: 15px;
}
#media screen and (max-width: 767px) {
.login-password input[type=password] , .login-username input[type=text] , .login-submit input[type=submit] {
width: 75%;
}
#media screen and (max-width: 767px) {
.field-icon {
margin-left: 82%;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="memberium-form">
<form name="loginform" id="loginform" action="https://traderonthestreet.com/wp-login.php" method="post">
<input id="learndash-login-form" type="hidden" name="learndash-login-form" value="754942d3df">
<p class="login-username">
<label for="user_login"></label>
<input type="text" name="log" id="user_login" class="input" value="" size="20" placeholder="Email *">
</p>
<p class="login-password">
<label for="user_pass"></label>
<input type="password" name="pwd" id="user_pass" class="input" value="" size="20" placeholder="Password *">
<!-- html thats being added by jquery appendTo -->
<!-- <span toggle="#user_pass" class="fa fa-fw fa-eye field-icon toggle-password"></span>
<p id="caps">WARNING! Caps lock is ON.</p> -->
</p>
<p class="login-submit">
<input type="submit" name="wp-submit" id="wp-submit" class="button button-primary" value="Login">
<input type="hidden" name="redirect_to" value="https://traderonthestreet.com/wp-admin/">
</p>
</form>
</div>

One button for file select and upload

I have to create only one button which selects the file and uploads too..
I created one button which selects the file but it doesn't fire the onclick function in the upload button.
For an example I have one hello button which just consoles something but in reality it will do something with the selected file.
<div class="upload-btn-wrapper">
<button class="btn" onClick ="hello()">Upload a file</button>
<input type="file" name="myfile"/>
</div>
.upload-btn-wrapper {
position: relative;
overflow: hidden;
display: inline-block;
}
.btn {
border: 2px solid gray;
color: gray;
background-color: white;
padding: 8px 20px;
border-radius: 8px;
font-size: 20px;
font-weight: bold;
}
.upload-btn-wrapper input[type=file] {
font-size: 100px;
position: absolute;
left: 0;
top: 0;
opacity: 0;
}
function hello() {
console.log("hello");
}
Link for codePen: https://codepen.io/anon/pen/wOmNJw

The input is overriding the button click listener. If you are trying to do something with the file then you should apply a change listener to the input and run a function there. You can do this with or without jquery.
Vanilla JS (No Jquery)
document.getElementsByName('myfile')[0].addEventListener('change', function(){
hello(this);
});
function hello(elem) {
console.log('Hello');
console.log('File Name: ', elem.value);
}
.upload-btn-wrapper {
position: relative;
overflow: hidden;
display: inline-block;
}
.btn {
border: 2px solid gray;
color: gray;
background-color: white;
padding: 8px 20px;
border-radius: 8px;
font-size: 20px;
font-weight: bold;
}
.upload-btn-wrapper input[type=file] {
font-size: 100px;
position: absolute;
left: 0;
top: 0;
opacity: 0;
}
<div class="upload-btn-wrapper">
<button class="btn" onClick ="hello()">Upload a file</button>
<input type="file" name="myfile"/>
</div>
With JQuery
$('input[name="myfile"]').on('change', hello);
function hello() {
console.log("hello");
}
.upload-btn-wrapper {
position: relative;
overflow: hidden;
display: inline-block;
}
.btn {
border: 2px solid gray;
color: gray;
background-color: white;
padding: 8px 20px;
border-radius: 8px;
font-size: 20px;
font-weight: bold;
}
.upload-btn-wrapper input[type=file] {
font-size: 100px;
position: absolute;
left: 0;
top: 0;
opacity: 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="upload-btn-wrapper">
<button class="btn" onClick ="hello()">Upload a file</button>
<input type="file" name="myfile"/>
</div>
Edit: React Example
// Example class component
class InputExample extends React.Component {
handleFileChange(e){
console.log('Hello');
console.log('File Name: ', e.target.value);
}
render() {
return (
<input
id="upload"
ref="upload"
type="file"
accept="image/*"
multiple="false"
onChange={(e) => this.handleFileChange(e)}/>
);
}
}
// Render it
ReactDOM.render(
<InputExample />,
document.getElementById("react")
);
<div id="react"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>

I maked a few changes in your code and it works:
JS file
function hello() {
console.log("hello");
document.querySelector('.upload-btn-wrapper input[type=file]').click();
}
CSS file
.upload-btn-wrapper {
position: relative;
overflow: hidden;
display: inline-block;
}
.btn {
border: 2px solid gray;
color: gray;
background-color: white;
padding: 8px 20px;
border-radius: 8px;
font-size: 20px;
font-weight: bold;
}
.upload-btn-wrapper input[type=file] {
font-size: 100px;
position: absolute;
opacity: 0;
}

If this is what you are looking for.
document.getElementById("fileInput").addEventListener("change", function(event, val){
let file = event.target.value;
if(!!file){
document.getElementById("inputWrapper").style.display = "none";
document.getElementById("upload").style.display = "block";
}
});
.upload-btn-wrapper {
position: relative;
overflow: hidden;
display: inline-block;
}
.btn {
border: 2px solid gray;
color: gray;
background-color: white;
padding: 8px 20px;
border-radius: 8px;
font-size: 20px;
font-weight: bold;
}
.upload-btn-wrapper input[type=file] {
font-size: 100px;
position: absolute;
left: 0;
top: 0;
opacity: 0;
}
<div class="upload-btn-wrapper">
<input type="submit" value="Upload" class="btn" style="display:none" id="upload" />
<div id="inputWrapper">
<span><input type="file" name="myfile" id="fileInput"/></span>
<span><button class="btn">Select file</button> </span>
</div>
</div>