Question

我从这个d3 js示例d3 setinterval animate text and remove image on button click开始。我想在动画停止时更改按钮的背景颜色-删除该按钮的焦点，然后将其设置回鼠标或单击并开始动画之前的状态。我试图将其包含在stopanimation函数中，但没有得到想要的结果。

在我的完整代码中，我包含了一个mouseout函数来更改按钮的背景颜色，但是我真的很想将其绑定到转场/动画上，以便在动画结束时更改它，就像我可以删除文本和图片。

我希望有人能够对此提供帮助。预先感谢。

这是我的代码

<html lang="en">
<head>

<meta charset="utf-8">
    <title></title>
    <script src="https://d3js.org/d3.v4.min.js"></script>
    <script src="https://d3js.org/topojson.v0.min.js"></script>

  <style>

</style>
</head>

<body>
<div id ="container">

  <div id ="mapdata"></div>
  <div id = "buttons"></div>

</div>

<script>


d3.queue()

  .defer(d3.csv, "data/testData.csv")
  .await(ready);

function ready (error, data){

var dataGroup = d3.nest()
      .key(function(d) {return d.year;}).sortKeys(d3.ascending)
      .key(function(d){return d.VoyageID;}).sortKeys(d3.ascending)
      .entries(data);

dataGroup.forEach(function(yearObject,i) {

var buttons = d3.select("#buttons").selectAll("button")
    .data(dataGroup)
    .enter()
    .append("button")
    .attr("class", "buttons")
    .attr("id", function(d){return "button_" + d.key})
    .append("label")
    .text(function(d){return d.key;})


var testData = d3.select("#mapdata").selectAll(".voyageData")
    .data(dataGroup)
    .enter()
    .append("div")
    .attr("class", "voyageData")
    .attr("id", function(d){return "voyageText_" + d.key})

    var data = testData.selectAll(".data")
    .data(function(d) {return d.values;})
    .enter()
    .append("div")
    .attr("class", "data")
    .attr("id", function(d){return "data_" + d.key})

    var images = testData.selectAll(".images")
    .data(function(d) {return d.values;})
    images.exit().remove();
    images.enter()
    .append("div")
    .attr("class", "images")
    .attr("id", function(d){return "images_" + d.key})


//buttons
buttons.on("mouseover", clickButton);
var runningAnimation = null;

function stopAnimation(animation, voyageID, voyageClass) {
  clearInterval(animation);
  d3.select("#data_"+ voyageID).text("");
  d3.select("#images_" + voyageID).select("img").remove();
  d3.select("#button_" + voyageClass).style("background-color", "red");
  runningAnimation = null;
}

function clickButton(d,i) {

  var voyageClass = d.key;
  var voyageID = d.values[0].key;

 d3.select("#button_" + voyageClass).style("background-color", "green")

  if (runningAnimation) { stopAnimation(runningAnimation.animation, runningAnimation.voyageID, runningAnimation.voyageClass); }

  //animate place name and dates
  var j = 0;
  var animation = setInterval(function(){

    d3.select("#data_"+ voyageID)
      .text(function(d) { return d.values[j].arrivalDateTxt +" "+d.values[j].placeName; });

    j = j + 1;

    if(j==d.values[0].values.length) { stopAnimation(animation, voyageID, voyageClass); }
  },1000);

  runningAnimation = { animation: animation, voyageID: voyageID, voyageClass: voyageClass };

  //add image
  d3.select("#images_" + voyageID)
    .append("img")
    .attr("src", function(d){return  d.values[j].groupPic })
    .attr("width", "40");
  }

    });

  }

</script>
</body>

</html>

这是我的示例数据：

VoyageID,arrivalDateTxt,year,placeName,groupPic
1,14 January 1906,1906,Place 1,ANMS1113[006].jpg
1,1 May 1907,1906,Place 2,ANMS1113[006].jpg
1,26 October 1907,1906,Place 3,ANMS1113[006].jpg
1,4 November 1907,1906,Place 4,ANMS1113[006].jpg
1,26 November 1907,1906,Place 5,ANMS1113[006].jpg
1,3 December 1907,1906,Place 6,ANMS1113[006].jpg
1,10 December 1907,1906,Place 7,ANMS1113[006].jpg
1,20 December 1907,1906,Place 8,ANMS1113[006].jpg
1,26 December 1907,1906,Place 9,ANMS1113[006].jpg
3,12 March 1845,1845,Island 1,00038301_4.jpg
3,15 March 1845,1845,Island 2,00038301_4.jpg
3,22 March 1845,1845,Place in ocean 3,00038301_4.jpg
3,23 July 1845,1845,Place in ocean 4,00038301_4.jpg
3,19 December 1845,1845,Place in ocean 5,00038301_4.jpg
3,22 January 1846,1845,Place in ocean 6,00038301_4.jpg
3,30 January 1846,1845,Back home,00038301_4.jpg

Answer 1

不要将background-color设置为红色

d3.select("#button_" + voyageClass).style("background-color", "red");

删除stopAnimation

中的样式

d3.select("#button_" + voyageClass).style("background-color", null);

设置间隔动画结束时，d3更改按钮样式

1 个答案: