JSFiddle - React, Tailwind, and code Playground

by nikolya223

HTML

<form action="handler.php">
    	<fieldset>
        	<p>Имя <input name="name" placeholder="Имя" pattern="[A-Za-zА-Яа-яЁё]+" required><span class="basic"></span></p>
            <p>Фамилия <input name="surname" placeholder="Фамилия" pattern="[A-Za-zА-Яа-яЁё]+" required><span class="basic"></span></p>
            <p>Город <input name="city" placeholder="Город" pattern="[A-Za-zА-Яа-яЁё]+" required><span class="basic"></span></p><br>
            <p>Эл. почта <input type="email" name="mail" placeholder="Электронная почта" required><span class="basic"></span></p>
            <p>Пароль <input type="password" name="pass" placeholder="Введите пароль" required onchange="checkpass(this.form)"></p>
            <p>Повторите <input type="password" name="pass2" placeholder="Повторите пароль" required onchange="checkpass(this.form)"><span id="passsim"></span></p><br>
            <p>Введите число с картинки</p>
            <p><img src="images/number.png" alt="капча"><input id="kapcha" name="kapcha" type="text" placeholder="Введите число с картинки" required onchange="checklich(this.form)"><span id="kapchasim"></span></p>
        </fieldset>
        <footer>
        	<button>Зарегистрироваться</button>
        </footer>
     </form>

CSS

body {
	min-width: 500px;
}

fieldset {
	border-radius: 3px;
	position: relative;
}

input {
	position: absolute;
	left: 100px;
	width: 200px;
}

span {
	position: absolute;
	left: 325px;
	color: #DA4444;
}

input:valid+span.basic:after {
	content: url(images/yes.png);
}
		
input:invalid+span.basic:after {
	content: url(images/no.png);
}

footer {
	display: block;
	background: #E3E3E3;
	border-radius: 5px;
	margin-top: 10px;
}

button {
	margin: 10px;
	margin-left: 100px;
	height: 20px;
	width: 150px;
	color: #FFF;
	border: 1px solid #00C900;
	border-radius: 10px;
	background: #00C300; /* Старые браузеры */
    background: -moz-radial-gradient(bottom, #07F407, #008F00); /* FF3.6+ */
    background: -webkit-radial-gradient(bottom, #07F407, #008F00); /* Chrome 10+, Safari 5.1+ */
    background: -o-radial-gradient(bottom, #07F407, #008F00); /* Opera 12 */
    background: -ms-radial-gradient(bottom, #07F407, #008F00); /* IE10 */
    background: radial-gradient(bottom, #07F407, #008F00); /* IE10 */
    background: radial-gradient(bottom, #07F407, #008F00); /* CSS3 */
}

JavaScript

function checkpass(v) { 
		var sim = document.getElementById('passsim');
		if(v.pass.value == "" || v.pass2.value == "") {sim.innerHTML = "";} else
			if(v.pass.value == v.pass2.value) {
				sim.innerHTML = "<img src='images/yes.png' alt='ok'>";
			} else sim.innerHTML = "<img src='images/no.png' alt='no'>";
}

function checklich(v) { 
		var sim = document.getElementById("kapchasim");
		if(v.kapcha.value == "55102") {
			sim.innerHTML = "<img src='images/yes.png' alt='ok'>";
			} else 
				if (v.kapcha.value == "") {
					sim.innerHTML = "";
					} else sim.innerHTML = "<nobr><img src='images/no.png' alt='no'>&nbsp&nbspНеправильное число</nobr>";
}