javascript-d3How can I use d3.js to make an XMLHttpRequest?

You can use d3.js to make an XMLHttpRequest by using the d3.xhr() function. This function takes two arguments: the URL of the request and an optional callback function. The callback function will be called with the response object when the request is complete.

Example code

d3.xhr("https://jsonplaceholder.typicode.com/users/1", function(error, response) {
  if (!error && response.status === 200) {
    console.log(response.responseText);
  }
});

Output example

{"id":1,"name":"Leanne Graham","username":"Bret","email":"[email protected]","address":{"street":"Kulas Light","suite":"Apt. 556","city":"Gwenborough","zipcode":"92998-3874","geo":{"lat":"-37.3159","lng":"81.1496"}},"phone":"1-770-736-8031 x56442","website":"hildegard.org","company":{"name":"Romaguera-Crona","catchPhrase":"Multi-layered client-server neural-net","bs":"harness real-time e-markets"}}

The code above has the following parts:

• d3.xhr(): This is the function used to make the XMLHttpRequest.
• "https://jsonplaceholder.typicode.com/users/1": This is the URL of the request.
• function(error, response): This is the callback function that will be called with the response object when the request is complete.
• if (!error && response.status === 200): This checks to make sure there is no error and that the response status is 200 (OK).
• console.log(response.responseText): This prints the response text to the console.

Helpful links

• d3.xhr()
• XMLHttpRequest

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