如何从 JSON XMLHttpRequest 获取值?
How to get values from JSON XMLHttpRequest?
我是 Web 开发的新手,我在 JavaScript 中使用 XMLHttpRequest() 从 api 获取数据。我正在尝试从数据创建变量,但在尝试执行以下操作时出现错误。有谁知道 var data1 = data["data1"];
行有什么问题?
<script>
const Http = new XMLHttpRequest();
const url = "www.mytestapi.com/response.json";
Http.open("GET", url);
Http.send();
Http.onreadystatechange = (e) => {
var json = JSON.parse(Http.responseText)
var data = json.Data
var data1 = data["data1"]; //issue caused here
}
<script>
你不需要解析响应数据,数据已经被解析了,试试这个
const xhr = new XMLHttpRequest();
const url = "www.mytestapi.com/response.json";
xhr.open('GET', url);
xhr.responseType = 'json';
xhr.onload = () => {
console.log("load - "+ JSON.stringify(xhr.response));
var data = xhr.response;
var data1 = data["data1"]
}
xhr.onerror = () => {
console.log("error status - " + xhr.status);
}
xhr.send()
我是 Web 开发的新手,我在 JavaScript 中使用 XMLHttpRequest() 从 api 获取数据。我正在尝试从数据创建变量,但在尝试执行以下操作时出现错误。有谁知道 var data1 = data["data1"];
行有什么问题?
<script>
const Http = new XMLHttpRequest();
const url = "www.mytestapi.com/response.json";
Http.open("GET", url);
Http.send();
Http.onreadystatechange = (e) => {
var json = JSON.parse(Http.responseText)
var data = json.Data
var data1 = data["data1"]; //issue caused here
}
<script>
你不需要解析响应数据,数据已经被解析了,试试这个
const xhr = new XMLHttpRequest();
const url = "www.mytestapi.com/response.json";
xhr.open('GET', url);
xhr.responseType = 'json';
xhr.onload = () => {
console.log("load - "+ JSON.stringify(xhr.response));
var data = xhr.response;
var data1 = data["data1"]
}
xhr.onerror = () => {
console.log("error status - " + xhr.status);
}
xhr.send()