在某些(不是全部)浏览器中读取 D3 javascript 中的 JSON 文件时出现问题

2022-01-23 00:00:00 json d3.js javascript drupal-7

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 中正常运行.

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);//Safari 中的 "tally" "TypeError: Cannot read property 'node' of undefined" 在 Chrome 中.<

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.这里是开始:

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":"", ...<

这里是 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

我正在使用 macOS，而我的朋友使用 Windows 在 Firefox 中遇到了同样的错误.

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

根据要求，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

问题是由于 Drupal 视图没有正确创建造成的.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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