Jak povolit/zakázat tlačítko pomocí jQuery?
Aktivace/deaktivace tlačítka pomocí jQuery zahrnuje změnu jeho funkčnosti tak, aby buď akceptovala vstup uživatele, nebo ne. To se obvykle provádí manipulací s jeho vlastností nebo atributem „disabled“ pomocí metod jQuery, jako je „.prop()“ nebo „.attr()“.
Chcete-li povolit/zakázat tlačítko pomocí jQuery, budete potřebovat základní strukturu HTML spolu s JavaScriptem/jQuery. Níže je jednoduchá struktura kódu, která vám pomůže začít
HTML Tlačítko Povolit/Zakázat název> <script src= 'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js'>skript> hlava> <body> <button id='myButton'>Klikněte na tlačítko Me> <script>$(document).ready(function(){ // tlačítko jQuery pro aktivaci/deaktivaci // Sem přidejte svůj kód }); skript> tělo> html> </pre> </code> <p dir='ltr'> <br> </p> <h2> <span>Příklady povolení/zakázaní tlačítka pomocí jQuery </span> </h2> <h3> <span>1. Pomocí metody .prop(): </span> </h3> <p dir='ltr'> <span>Použitím </span> <span>.prop() v jQuery </span> <span>aktivace/deaktivace tlačítka zahrnuje nastavení jeho vlastnosti „disabled“ na hodnotu true nebo false, což poskytuje účinnou kontrolu nad jeho interaktivitou na základě požadavků aplikace a interakcí uživatele. </span> </p> <p dir='ltr'> <b> <strong>Příklad: </strong> </b> <span>V tomto příkladu používáme jQuery: Přepíná vlastnost tlačítka „vypnuto“ při událostech kliknutí a dvojitého kliknutí pro hladkou interakci uživatele pomocí metody .prop(). </span> </p>HTML <code> <pre> <html> <head> <script src= 'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js'>skript> hlava> <body> <h3>Pomocí metody .prop()h3> <button id='update'>aktualizovat mebutton> <div style='margin-top: 50px'> <button id='change'>klikněte na tlačítko me> div> <script>$('#change').on('click', function () { $('#update').prop( 'disabled', true ); }); $('#change').on( 'dblclick', funkce () { $('#update').prop( 'disabled', false ); } ); skript> tělo> html> </pre> </code> <p dir='ltr'> <b> <strong>Výstup: </strong> </b> </p> <img src='//techcodeview.com/img/blogathon-2021/17/how-enable-disable-button-using-jquery.webp' alt='JqueryToggle'> <p>Metoda .prop() Příklad Výstup </p> <h3> <span>2. Pomocí metody .attr(). </span> </h3> <p dir='ltr'> <span>Za použití </span> <span>metoda .attr(). </span> <span>v jQuery přepínáte atribut „disabled“ prvků. Klepnutím na tlačítko deaktivujete jiné tlačítko, zatímco dvojitým kliknutím jej znovu aktivujete, čímž se zlepší interakce uživatele a funkčnost na webových stránkách. </span> </p> <p dir='ltr'> <b> <strong>Příklad: </strong> </b> <span>V tomto příkladu používáme metodu .attr() pro zapnutí/vypnutí tlačítka. Klepnutím deaktivujete další tlačítko; dvojitým kliknutím jej znovu aktivujete, čímž se zlepší interakce s uživatelem a funkce webu. </span> </p>HTML <code> <pre> <html> <head> <script src= 'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.0/jquery.min.js'>skript> hlava> <body> <h3>Pomocí metody .attr()h3> <button id='update'>Aktualizovat Mebutton> <div style='margin-top: 50px;'> <button id='change'>Klikněte na tlačítko Mebutton> div> <script>$('#change').on('click', function () { $('#update').attr('disabled', 'disabled'); }); $('#change').on('dblclick', funkce () { $('#update').removeAttr('disabled'); }); skript> tělo> html> </pre> </code> <p dir='ltr'> <b> <strong>Výstup: </strong> </b> </p> <p> <br> </p> <img src='//techcodeview.com/img/blogathon-2021/17/how-enable-disable-button-using-jquery-2.webp' alt='JqueryToggle2'> <p>Metoda .attr() Příklad výstupu </p> <p> <br> </p> <br> <br>
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