d3js如何滚动或补间属性

Question

我有一个div,#scrollable,带滚动条,我想滚动到最后.我可以通过将div的"scrollTop"属性设置为div的"scrollHeight"属性的值来实现:

var scrollable = d3.select("#scrollable");
scrollable.property("scrollTop", scrollable.property("scrollHeight"));

但我无法弄清楚,如果有的话,我可以补充它.

var scrollheight = scrollable.property("scrollHeight");
d3.select("#scrollable").transition().property("scrollTop", scrollheight);

不起作用.

谢谢你的任何想法.问候

Answer 1

您可以使用自定义d3补间转换任意属性,如scrollTop.

mbostock的Smooth Scrolling示例演示如何使用自定义补间来滚动整个文档.

以下是适合您的上下文的示例(也可以在bl.ocks.org上以交互方式查看):

var scrollable = d3.select("#scrollable"); 

d3.select("#down").on('click', function() { 
    var scrollheight = scrollable.property("scrollHeight"); 
    d3.select("#scrollable").transition().duration(3000) 
        .tween("uniquetweenname", scrollTopTween(scrollheight)); 
}); 

function scrollTopTween(scrollTop) { 
    return function() { 
        var i = d3.interpolateNumber(this.scrollTop, scrollTop); 
        return function(t) { this.scrollTop = i(t); }; 
    }; 
}