The Document Object Model, eller DOM , gir en standard måte å manipulere HTML med et skriptspråk eller programmeringsspråk. Den "vindu" objekt i DOM refererer til den aktive vinduet og inneholder mange attributter og elementer som videre definerer vinduet. Den " scrollBy "-metoden gjør det mulig å bla i vinduet et visst antall bla trinn , og du kan ringe som metode for å bla nedover i et vindu ved hjelp av JavaScript. Instruksjoner
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Scroll Eksempel < /title > <br> <br > 2 <p> Opprett en JavaScript -funksjon som vil bruke " scrollBy " metode for å rulle skjermen ned med 50 piksler . For eksempel skrive : en <p> <script type="text/javascript"> <br> <p> funksjon scrollWindow ( ) { <br> <p> window.scrollBy ( 0,50 ) ; <br> <p> } <br> <p> < /script > <br> <p> < /head> <br> 3 <p> Legg en knapp på skjermen som vil ringe JavaScript- bla -funksjonen når du klikker . For eksempel skrive : en <p> <body> <br> <p> <form id="myForm"> < input type = " button" verdi "Scroll " onclick = " scrollWindow ( )" /> < /form > <br> <p> < /body > <br> <p> < /html > <br> <br>
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