Blättern Sie reibungslos auf bestimmtes element auf Seite

Nur aus diesem javascript-Lösung nur unten.

Einfache Nutzung:

EPPZScrollTo.scrollVerticalToElementById('signup_form', 20);

Engine-Objekt (die Sie anpassen können mit filter -, fps-Werte):

/**
 *
 * Created by Borbás Geri on 12/17/13
 * Copyright (c) 2013 eppz! development, LLC.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */


var EPPZScrollTo =
{
    /**
     * Helpers.
     */
    documentVerticalScrollPosition: function()
    {
        if (self.pageYOffset) return self.pageYOffset; //Firefox, Chrome, Opera, Safari.
        if (document.documentElement && document.documentElement.scrollTop) return document.documentElement.scrollTop; //Internet Explorer 6 (standards mode).
        if (document.body.scrollTop) return document.body.scrollTop; //Internet Explorer 6, 7 and 8.
        return 0; //None of the above.
    },

    viewportHeight: function()
    { return (document.compatMode === "CSS1Compat") ? document.documentElement.clientHeight : document.body.clientHeight; },

    documentHeight: function()
    { return (document.height !== undefined) ? document.height : document.body.offsetHeight; },

    documentMaximumScrollPosition: function()
    { return this.documentHeight() - this.viewportHeight(); },

    elementVerticalClientPositionById: function(id)
    {
        var element = document.getElementById(id);
        var rectangle = element.getBoundingClientRect();
        return rectangle.top;
    },

    /**
     * Animation tick.
     */
    scrollVerticalTickToPosition: function(currentPosition, targetPosition)
    {
        var filter = 0.2;
        var fps = 60;
        var difference = parseFloat(targetPosition) - parseFloat(currentPosition);

        //Snap, then stop if arrived.
        var arrived = (Math.abs(difference) <= 0.5);
        if (arrived)
        {
            //Apply target.
            scrollTo(0.0, targetPosition);
            return;
        }

        //Filtered position.
        currentPosition = (parseFloat(currentPosition) * (1.0 - filter)) + (parseFloat(targetPosition) * filter);

        //Apply target.
        scrollTo(0.0, Math.round(currentPosition));

        //Schedule next tick.
        setTimeout("EPPZScrollTo.scrollVerticalTickToPosition("+currentPosition+", "+targetPosition+")", (1000 / fps));
    },

    /**
     * For public use.
     *
     * @param id The id of the element to scroll to.
     * @param padding Top padding to apply above element.
     */
    scrollVerticalToElementById: function(id, padding)
    {
        var element = document.getElementById(id);
        if (element == null)
        {
            console.warn('Cannot find element with id \''+id+'\'.');
            return;
        }

        var targetPosition = this.documentVerticalScrollPosition() + this.elementVerticalClientPositionById(id) - padding;
        var currentPosition = this.documentVerticalScrollPosition();

        //Clamp.
        var maximumScrollPosition = this.documentMaximumScrollPosition();
        if (targetPosition > maximumScrollPosition) targetPosition = maximumScrollPosition;

        //Start animation.
        this.scrollVerticalTickToPosition(currentPosition, targetPosition);
    }
};

InformationsquelleAutor Geri

Smooth-scrolling - look ma no jQuery

Basierend auf in einem Artikel auf itnewb.com machte ich einen demo-plunk, glatt Blättern ohne externe Bibliotheken.

Javascript ist ganz einfach. Zunächst eine Hilfsfunktion, die zur Verbesserung der cross-browser-Unterstützung, um zu bestimmen, die aktuelle position.

function currentYPosition() {
    //Firefox, Chrome, Opera, Safari
    if (self.pageYOffset) return self.pageYOffset;
    //Internet Explorer 6 - standards mode
    if (document.documentElement && document.documentElement.scrollTop)
        return document.documentElement.scrollTop;
    //Internet Explorer 6, 7 and 8
    if (document.body.scrollTop) return document.body.scrollTop;
    return 0;
}

Dann eine Funktion zum bestimmen der position des Ziel-element - das einzige, wo wir möchten, Blättern Sie zu.

function elmYPosition(eID) {
    var elm = document.getElementById(eID);
    var y = elm.offsetTop;
    var node = elm;
    while (node.offsetParent && node.offsetParent != document.body) {
        node = node.offsetParent;
        y += node.offsetTop;
    } return y;
}

Und die core-Funktion für das scrollen von

function smoothScroll(eID) {
    var startY = currentYPosition();
    var stopY = elmYPosition(eID);
    var distance = stopY > startY ? stopY - startY : startY - stopY;
    if (distance < 100) {
        scrollTo(0, stopY); return;
    }
    var speed = Math.round(distance / 100);
    if (speed >= 20) speed = 20;
    var step = Math.round(distance / 25);
    var leapY = stopY > startY ? startY + step : startY - step;
    var timer = 0;
    if (stopY > startY) {
        for ( var i=startY; i<stopY; i+=step ) {
            setTimeout("window.scrollTo(0, "+leapY+")", timer * speed);
            leapY += step; if (leapY > stopY) leapY = stopY; timer++;
        } return;
    }
    for ( var i=startY; i>stopY; i-=step ) {
        setTimeout("window.scrollTo(0, "+leapY+")", timer * speed);
        leapY -= step; if (leapY < stopY) leapY = stopY; timer++;
    }
    return false;
}

Nennen Sie nur Folgendes tun. Sie erstellen einen link, der verweist auf ein anderes element mit der id als Referenz für eine Ziel-Anker.

<a href="#anchor-2" 
   onclick="smoothScroll('anchor-2');">smooth scroll to the headline with id anchor-2<a/>
...
...  some content
...
<h2 id="anchor-2">Anchor 2</h2>

Copyright

In der Fußzeile itnewb.com das folgende geschrieben: The techniques, effects and code demonstrated in ITNewb articles may be used for any purpose without attribution (although we recommend it) (2014-01-12)

InformationsquelleAutor surfmuggle

Variation von @tominko Antwort.
Ein wenig glattere animation und gelöst problem mit unendlichen aufgerufen setTimeout(), wenn einige Elemente können nicht allign zu top-Ansichtsfenster.

function scrollToItem(item) {
    var diff=(item.offsetTop-window.scrollY)/20;
    if(!window._lastDiff){
        window._lastDiff = 0;
    }

    console.log('test')

    if (Math.abs(diff)>2) {
        window.scrollTo(0, (window.scrollY+diff))
        clearTimeout(window._TO)

        if(diff !== window._lastDiff){
            window._lastDiff = diff;
            window._TO=setTimeout(scrollToItem, 15, item);
        }
    } else {
        console.timeEnd('test');
        window.scrollTo(0, item.offsetTop)
    }
}

InformationsquelleAutor Andrzej Sala

können Sie dieses plugin verwenden. Tut genau, was Sie wollen.

http://flesler.blogspot.com/2007/10/jqueryscrollto.html

InformationsquelleAutor Feedthe

Kannst du auch dieses tolle Blog - einige sehr einfache Möglichkeiten, dies zu erreichen 🙂

https://css-tricks.com/snippets/jquery/smooth-scrolling/

Wie (aus dem blog)

//Scroll to specific values
//scrollTo is the same
window.scroll({
  top: 2500, 
  left: 0, 
  behavior: 'smooth'
});

//Scroll certain amounts from current position 
window.scrollBy({ 
  top: 100, //could be negative value
  left: 0, 
  behavior: 'smooth' 
});

//Scroll to a certain element
document.querySelector('.hello').scrollIntoView({ 
  behavior: 'smooth' 
});

- und Sie können auch das element "top" - position, wie unten (oder auf eine andere Weise)

var e = document.getElementById(element);
var top = 0;

do {   
    top += e.offsetTop;
} while (e = e.offsetParent);

return top;

InformationsquelleAutor aniltilanthe