点击事件然后页面跳转到指定DOM元素的位置

Posted 2020-06-18 heyucool

设置一个函数，执行函数滚动条自动拖动，页面跳转到指定DOM元素的位置。

实现方式很简单，首先引入animatescroll.js文件（要先引入JQuery），然后

$(‘#id‘).animatescroll();

即可调到指定DOM元素在页面的位置。

为方便可以编写一个函数，传入DOM元素的ID

function jumpTo(id){
    $("#"+id).animatescroll();
}

附animatescroll.js

/* 使用方法： $("#id").animatescroll();  即可调到指定DOM在页面的位置*/
(function($){

    $.fn.animatescroll = function(options) {

        // fetches options
        var opts = $.extend({},$.fn.animatescroll.defaults,options);

        // Get the distance of particular id or class from top
        var offset = this.offset().top;
        // defines various easing effects
        jQuery.easing[‘jswing‘] = jQuery.easing[‘swing‘];
        jQuery.extend( jQuery.easing,
        {
                def: ‘easeOutQuad‘,
                swing: function (x, t, b, c, d) {
                        return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
                },
                easeInQuad: function (x, t, b, c, d) {
                        return c*(t/=d)*t + b;
                },
                easeOutQuad: function (x, t, b, c, d) {
                        return -c *(t/=d)*(t-2) + b;
                },
                easeInOutQuad: function (x, t, b, c, d) {
                        if ((t/=d/2) < 1) return c/2*t*t + b;
                        return -c/2 * ((--t)*(t-2) - 1) + b;
                },
                easeInCubic: function (x, t, b, c, d) {
                        return c*(t/=d)*t*t + b;
                },
                easeOutCubic: function (x, t, b, c, d) {
                        return c*((t=t/d-1)*t*t + 1) + b;
                },
                easeInOutCubic: function (x, t, b, c, d) {
                        if ((t/=d/2) < 1) return c/2*t*t*t + b;
                        return c/2*((t-=2)*t*t + 2) + b;
                },
                easeInQuart: function (x, t, b, c, d) {
                        return c*(t/=d)*t*t*t + b;
                },
                easeOutQuart: function (x, t, b, c, d) {
                        return -c * ((t=t/d-1)*t*t*t - 1) + b;
                },
                easeInOutQuart: function (x, t, b, c, d) {
                        if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
                        return -c/2 * ((t-=2)*t*t*t - 2) + b;
                },
                easeInQuint: function (x, t, b, c, d) {
                        return c*(t/=d)*t*t*t*t + b;
                },
                easeOutQuint: function (x, t, b, c, d) {
                        return c*((t=t/d-1)*t*t*t*t + 1) + b;
                },
                easeInOutQuint: function (x, t, b, c, d) {
                        if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
                        return c/2*((t-=2)*t*t*t*t + 2) + b;
                },
                easeInSine: function (x, t, b, c, d) {
                        return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
                },
                easeOutSine: function (x, t, b, c, d) {
                        return c * Math.sin(t/d * (Math.PI/2)) + b;
                },
                easeInOutSine: function (x, t, b, c, d) {
                        return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
                },
                easeInExpo: function (x, t, b, c, d) {
                        return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
                },
                easeOutExpo: function (x, t, b, c, d) {
                        return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
                },
                easeInOutExpo: function (x, t, b, c, d) {
                        if (t==0) return b;
                        if (t==d) return b+c;
                        if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
                        return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
                },
                easeInCirc: function (x, t, b, c, d) {
                        return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
                },
                easeOutCirc: function (x, t, b, c, d) {
                        return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
                },
                easeInOutCirc: function (x, t, b, c, d) {
                        if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
                        return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
                },
                easeInElastic: function (x, t, b, c, d) {
                        var s=1.70158;var p=0;var a=c;
                        if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
                        if (a < Math.abs(c)) { a=c; var s=p/4; }
                        else var s = p/(2*Math.PI) * Math.asin (c/a);
                        return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
                },
                easeOutElastic: function (x, t, b, c, d) {
                        var s=1.70158;var p=0;var a=c;
                        if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
                        if (a < Math.abs(c)) { a=c; var s=p/4; }
                        else var s = p/(2*Math.PI) * Math.asin (c/a);
                        return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
                },
                easeInOutElastic: function (x, t, b, c, d) {
                        var s=1.70158;var p=0;var a=c;
                        if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
                        if (a < Math.abs(c)) { a=c; var s=p/4; }
                        else var s = p/(2*Math.PI) * Math.asin (c/a);
                        if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
                        return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
                },
                easeInBack: function (x, t, b, c, d, s) {
                        if (s == undefined) s = 1.70158;
                        return c*(t/=d)*t*((s+1)*t - s) + b;
                },
                easeOutBack: function (x, t, b, c, d, s) {
                        if (s == undefined) s = 1.70158;
                        return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
                },
                easeInOutBack: function (x, t, b, c, d, s) {
                        if (s == undefined) s = 1.70158;
                        if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
                        return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
                },
                easeInBounce: function (x, t, b, c, d) {
                        return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
                },
                easeOutBounce: function (x, t, b, c, d) {
                        if ((t/=d) < (1/2.75)) {
                                return c*(7.5625*t*t) + b;
                        } else if (t < (2/2.75)) {
                                return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
                        } else if (t < (2.5/2.75)) {
                                return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
                        } else {
                                return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
                        }
                },
                easeInOutBounce: function (x, t, b, c, d) {
                        if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
                        return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
                }
        });

        // Scroll the page to the desired position
        $("html, body").animate({ scrollTop: offset-opts.padding }, opts.scrollSpeed, opts.easing);

    };

    // default options
    $.fn.animatescroll.defaults = {
        easing:"swing",
        scrollSpeed:800,
        padding:0
    };

}(jQuery));