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Vanila Javascript: el desplazamiento suave no funciona

Actualmente estoy haciendo un sitio web. Estoy haciendo un desplazamiento suave de vanila javascript. He comprobado tres veces, pero todo parece correcto. Por favor, ayúdame. Altamente apreciado.

El error dice: TypeError no capturado: no se pueden leer las propiedades de nulo (leyendo 'addEventListener')

Mi código:

 function smoothScroll(target, duration){ var target = document.querySelector(target); var targetPosition = target.getBoundingClientRect().top; var startPosition = window.pageYOffset; var distance = targetPosition -startPosition; var startTime = null; function animation(currentTime){ if(startTime === null) startTime = currentTime; var timeElapsed = currentTime - startTime; var run = ease(timeElapsed,startPosition,distance,duration); window.scrollTo(0, run); if(timeElapsed < duration) requestAnimationFrame(animation) } function ease(t, b, c, d) { t /= d/2; if (t < 1) return c/2*t*t + b; t--; return -c/2 * (t*(t-2) - 1) + b; }; requestAnimationFrame(animation); } var section1 = document.querySelector('section1'); section1.addEventListener('click',function(){ smoothScroll('.section2', 1000) });

HTML:

 <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <link rel="stylesheet" href="style.css" /> </head> <body> <div class="box1"><a href="" class="section1">I cool</a></div> <div class="box2"><a class="section2" href="#">I cool</a></div> <script src="/app.js"></script> </body> </html>

CSS:

 .box1 { display: flex; justify-content: center; align-items: center; font-size: 3rem; height: 100vh; background-color: crimson; } .box2 { display: flex; justify-content: center; align-items: center; font-size: 3rem; height: 100vh; background-color: rgb(223, 255, 41); }
about 4 years ago · Juan Pablo Isaza
1 answers
Answer question

0

Es posible que pueda hacer esto con el método de desplazamiento incorporado

JavaScript:

 element.scrollIntoView();

https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollIntoView

CSS:

 html { scroll-behavior: smooth; }
about 4 years ago · Juan Pablo Isaza Report
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