在某些(并非全部)浏览器中，在D3 JavaScript中读取JSON文件时出现问题 [英] Problems reading JSON file in D3 javascript in some (not all) browsers

问题描述

我在读取JSON文件后立即在Chrome中收到此错误.它可以在Safari和Firefox中正常工作.

I get this error in Chrome immediately after reading a JSON file. It works correctly in Safari and Firefox.

console.log(事件->" +"postcards.nodes [0] .node.event")；//在Chrome浏览器中"tally""TypeError:无法读取未定义的属性'node'".<

console.log ("event -> "+ postcards.nodes[0].node.event); // "tally" in Safari "TypeError: Cannot read property 'node' of undefined" in Chrome.<

嵌套JSON文件中的级别是否有限制?我从Drupal视图生成JSON.这是开始:

Is there a limit to the levels in a nested JSON file? I generate the JSON from a Drupal view. Here here is the start:

{"nodes":[{"node":{"w1":"","w2":"1","w3":"","w4":"", ...<

这是Javascript:

Here is the Javascript:

d3.json(
  "/sites/default/d3_files/json/toronto-wards.json", 
  function(error,wards) {
    d3.json("/postcards-json", function(error, postcards) {
      console.log ("event -> "+ postcards.nodes[0].node.event); // tally in Safari

我使用的是macOS，而我的使用Windows的朋友在Firefox中也遇到相同的错误.

I'm using macOS and my friends using Windows get the same error in Firefox.

根据请求，我认为这是XHR消息:

As per request here is what I think is the XHR message:

d3.min.js:1 XHR finished loading: GET "http://www.stopplastics.ca/postcards-json".

推荐答案

该问题是由于未正确创建Drupal视图引起的.与Chrome浏览器无关.

The problem was caused by the Drupal view not being created correctly. Nothing to do with the Chrome browser.

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