JSFiddle - React, Tailwind, and code Playground

by Park Mino

HTML

<label for="content">내용 :</label>
<input id="content" name="content" value="" />

JavaScript

var placeholderText = '내용을 입력하세요';
var $content = $('input#content');

$content.val(placeholderText);
$content.on('focusin focusout', function (e) {
    var value = this.value;
    if (e.type == 'focusin' && value == placeholderText) {
        this.value = '';
    } else if (e.type == 'focusout' && value == '') {
        this.value = placeholderText;
    }
    return false;
});