javascript - Creating a dynamic list of DIVs with D3 - Stack Overflow

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I have been using D3 to create fancy animated charts, and the examples are great. However, I'm trying to do something seemingly a lot more basic, and having trouble - binding data to a simple list of DIVs.

I set up enter() to initialize elements at opacity 0, transition() to fade them in, and exit() to fade them out and remove them. enter() and exit() seem to be working fine - however, when an update contains an existing element already in the list, it seems to get partially removed - the containing DIV remains, but the contents disappear. I can't understand why the contents of the element would get changed in this way.

My code is as follows:

var data = [...];
sorted = data.sort(function(a, b) { return d3.descending(a.id, b.id); });

var tweet = tweetsBox
    .selectAll('div')
    .data(sorted, function(d) { return d.id; });

var enterDiv = tweet.enter()
    .append("div")
    .attr("class", "tweetdiv")
    .style("opacity", 0);
enterDiv.append("div")
    .attr("class", "username")
    .text(function(d) { return "@" + d.username });
enterDiv.append("div")
    .attr("class", "displayname")
    .text(function(d) { return d.displayname });
enterDiv.append("div")
    .attr("class", "date")
    .text(function(d) { return d.date });
enterDiv.append("div")
    .attr("class", "text")
    .text(function(d) { return d.text });

tweet.transition()
    .delay(200)
    .style("opacity", 1);

tweet.exit()
    .transition()
    .duration(200)
    .style("opacity", 0)
    .remove();

I also set up a jsFiddle here demonstrating the issue.

I have been using D3 to create fancy animated charts, and the examples are great. However, I'm trying to do something seemingly a lot more basic, and having trouble - binding data to a simple list of DIVs.

I set up enter() to initialize elements at opacity 0, transition() to fade them in, and exit() to fade them out and remove them. enter() and exit() seem to be working fine - however, when an update contains an existing element already in the list, it seems to get partially removed - the containing DIV remains, but the contents disappear. I can't understand why the contents of the element would get changed in this way.

My code is as follows:

var data = [...];
sorted = data.sort(function(a, b) { return d3.descending(a.id, b.id); });

var tweet = tweetsBox
    .selectAll('div')
    .data(sorted, function(d) { return d.id; });

var enterDiv = tweet.enter()
    .append("div")
    .attr("class", "tweetdiv")
    .style("opacity", 0);
enterDiv.append("div")
    .attr("class", "username")
    .text(function(d) { return "@" + d.username });
enterDiv.append("div")
    .attr("class", "displayname")
    .text(function(d) { return d.displayname });
enterDiv.append("div")
    .attr("class", "date")
    .text(function(d) { return d.date });
enterDiv.append("div")
    .attr("class", "text")
    .text(function(d) { return d.text });

tweet.transition()
    .delay(200)
    .style("opacity", 1);

tweet.exit()
    .transition()
    .duration(200)
    .style("opacity", 0)
    .remove();

I also set up a jsFiddle here demonstrating the issue.

• javascript
• jquery
• jquery-ui
• jquery-selectors
• d3.js

Share Improve this question Follow edited Jan 22, 2013 at 9:57 Tom asked Jan 21, 2013 at 12:04 TomTom 1,7071616 silver badges1919 bronze badges 0

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1 Answer 1

Sorted by: Reset to default 6

The problem is that you're selecting the divs you created, but create more than one div per data element. When updating, d3 tries to match the data to the nested divs. As you're already assigning a special class to the top-level divs, the fix is very simple. Replace

.selectAll('div')

with

.selectAll('.tweetdiv')

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