Què significa javascript:void(0)?
A JavaScript, javascript:void(0) és un pseudo-URL que no fa res quan es fa clic. S'utilitza habitualment com a marcador de posició als atributs href per evitar que el navegador navegui a una pàgina nova mentre segueix executant codi JavaScript.
S'utilitza # en una etiqueta d'ancoratge
Quan s'escriu el codi següent a l'editor, la pàgina web s'actualitza després que es mostri el missatge d'alerta.
Exemple:
html techcodeview.comtitle> <style>h1 { color: verd; } estil> cap> <body> <h1>techcodeview.comh1> <h3>sense JavaScript:void(0)h3> <a href='#' ondblclick='alert('Welcome to Geeks for Geeks')'>Feu doble clic a mi a> <a href='#' ondblclick='geeks()'>Feu doble clic a mi a> <script>function geeks() { document.getElementById('gfg').innerHTML = 'Benvingut a techcodeview.com'; } script> <p id='gfg'>p> cos> html>> </pre> </code> <p dir='ltr'> <b> <strong>Sortida: </strong> </b> <span> </span> </p> <img src='//techcodeview.com/img/javascript-questions/07/what-does-javascript.webp' alt='Què significa javascript:void(0)?'> <p>Què significa javascript:void(0)? </p> <h2> <b> <strong>Utilitzant javascript:void(0); a l'etiqueta d'àncora </strong> </b> </h2> <p dir='ltr'> <span>Escrivint javascript:void(0); a l'etiqueta d'ancoratge pot evitar que la pàgina es torni a carregar i les funcions de JavaScript es poden cridar fàcilment amb un simple o doble clic. </span> </p> <p dir='ltr'> <b> <strong>Exemple: </strong> </b> <span> </span> </p>html <code> <pre> <html lang='en'> <head> <meta charset='UTF-8'> <meta name='viewport' content='width=device-width, initial-scale=1.0'> <title>techcodeview.comtitle> <style>h1 { color: verd; } estil> cap> <body> <h1>techcodeview.comh1> <h3>JavaScript:void(0)h3> <a href='javascript:void(0);' ondblclick='geek()'>Feu doble clic a mi a> <p id='gfg'>p> <script>function geek() { document.getElementById('gfg').innerHTML = 'Benvingut a techcodeview.com'; } script> body> html>> </pre> </code> <p dir='ltr'> <b> <strong>Sortida: </strong> </b> <span> </span> </p> <img src='//techcodeview.com/img/javascript-questions/07/what-does-javascript-2.webp' alt='Què significa javascript:void(0)?'> <p>Què significa javascript:void(0)? </p> <br>
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