Ką reiškia javascript:void(0)?

Ką reiškia javascript:void(0)?

„JavaScript“ programoje javascript:void(0) yra pseudoURL, kuris spustelėjus nieko nedaro. Jis dažniausiai naudojamas kaip vietos rezervavimo ženklas href atributuose, kad naršyklė negalėtų pereiti į naują puslapį, kai vykdomas „JavaScript“ kodas.

# naudojimas prierašo žymoje

Įrašant šį kodą redaktoriuje, tinklalapis atnaujinamas po to, kai parodomas įspėjimo pranešimas.

Pavyzdys:

html techcodeview.comtitle> <style>h1 { spalva: žalia; } style> head> <body> <h1>techcodeview.comh1> <h3>be JavaScript:void(0)h3> <a href='#' ondblclick='alert('Welcome to Geeks for Geeks')'>Dukart spustelėkite mane a> <a href='#' ondblclick='geeks()'>Dukart spustelėkite mane a> <script>function geeks() { document.getElementById('gfg').innerHTML = 'Sveiki atvykę į techcodeview.com'; } scenarijus> <p id='gfg'>p> body> html>>> </tag> <p dir='ltr'> <b> <strong>Išvestis: </strong> </b> <span> </span> </p> <img src='//techcodeview.com/img/javascript-questions/07/what-does-javascript.webp' alt='Ką reiškia javascript:void(0)?'> <p>Ką reiškia javascript:void(0)? </p> <h2> <b> <strong>Naudojant javascript:void(0); inkaro žymoje </strong> </b> </h2> <p dir='ltr'> <span>Rašoma javascript:void(0); inkaro žymoje gali neleisti puslapiui įkelti iš naujo, o „JavaScript“ funkcijas galima lengvai iškviesti vienu arba du kartus spustelėjus. </span> </p> <p dir='ltr'> <b> <strong>Pavyzdys: </strong> </b> <span> </span> </p>html <tag data-text-1=' <html lang='en'> <head> <meta charset='UTF-8'> <meta name='viewport' content='width=device-width, initial-scale=1.0'> <title>techcodeview.comtitle> <style>h1 { spalva: žalia; } style> head> <body> <h1>techcodeview.comh1> <h3>JavaScript:void(0)h3> <a href='javascript:void(0);' ondblclick='geek()'>Dukart spustelėkite mane a> <p id='gfg'>p> <script>function geek() { document.getElementById('gfg').innerHTML = 'Sveiki atvykę į techcodeview.com'; } scenarijus> body> html>>> </tag> <p dir='ltr'> <b> <strong>Išvestis: </strong> </b> <span> </span> </p> <img src='//techcodeview.com/img/javascript-questions/07/what-does-javascript-2.webp' alt='Ką reiškia javascript:void(0)?'> <p>Ką reiškia javascript:void(0)? 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