Javascript 将json对象传递到另一个函数以在for循环中调用
我有一个通过XmlHTTPRequest获取json对象列表的函数:Javascript 将json对象传递到另一个函数以在for循环中调用,javascript,json,async-await,xmlhttprequest,jsonparser,Javascript,Json,Async Await,Xmlhttprequest,Jsonparser,我有一个通过XmlHTTPRequest获取json对象列表的函数: function getDataByXHR(method, url) { let xhr = new XMLHttpRequest(); xhr.open(method, url, true); xhr.onload = function () { console.log(xhr.response); gameSettings = JSON.parse(xhr.response); cons
function getDataByXHR(method, url) {
let xhr = new XMLHttpRequest();
xhr.open(method, url, true);
xhr.onload = function () {
console.log(xhr.response);
gameSettings = JSON.parse(xhr.response);
console.log(gameSettings);
this.data = gameSettings;
};
xhr.onerror = function () {
console.error("An error occur getting the XMLHttpRequest");
};
xhr.send();
}
如何将它们传递到这样的函数中
function waitConsoleLog() {
const sleep = (ms) => {
return new Promise((resolve) => setTimeout(resolve, ms));
};
let count = 0;
console.log(this.data);
for (let index = 0; index < this.data.length; index++) {
async (element) => {
count++;
await sleep(500 * count);
console.log(element);
};
}
}
函数waitConsoleLog(){
常数睡眠=(毫秒)=>{
返回新承诺((resolve)=>setTimeout(resolve,ms));
};
让计数=0;
console.log(this.data);
for(让index=0;index{
计数++;
等待睡眠(500*计数);
控制台日志(元素);
};
}
}
要在for循环中使用,因为数据/游戏设置总是以未定义的形式返回,请尝试使用:
function getDataByXHR(method, url) {
let xhr = new XMLHttpRequest();
xhr.open(method, url, true);
xhr.onload = function () {
console.log(xhr.response);
gameSettings = JSON.parse(xhr.response);
console.log(gameSettings);
this.data = gameSettings;
waitConsoleLog(this.data)
};
xhr.onerror = function () {
console.error("An error occur getting the XMLHttpRequest");
};
xhr.send();
}
function waitConsoleLog(data) {
const sleep = (ms) => {
return new Promise((resolve) => setTimeout(resolve, ms));
};
let count = 0;
console.log(data);
for (let index = 0; index < data.length; index++) {
async (element) => {
count++;
await sleep(500 * count);
console.log(element);
};
}
}
函数getDataByXHR(方法,url){
设xhr=newXMLHttpRequest();
open(方法、url、true);
xhr.onload=函数(){
console.log(xhr.response);
gameSettings=JSON.parse(xhr.response);
console.log(游戏设置);
this.data=游戏设置;
waitConsoleLog(this.data)
};
xhr.onerror=函数(){
error(“获取XMLHttpRequest时发生错误”);
};
xhr.send();
}
函数waitConsoleLog(数据){
常数睡眠=(毫秒)=>{
返回新承诺((resolve)=>setTimeout(resolve,ms));
};
让计数=0;
控制台日志(数据);
for(让index=0;index尝试将JSON分配给全局变量。