我已经能够使用Chartjs中的静态数据绘制条形图、折线图。但是,当我尝试通过一些api使用动态接收的数据时,会显示一些错误消息。我的代码是:
//'myCanvas' is the id for the canvas, where chart has to be drawn
const CHART = document.getElementById('myCanvas').getContext('2d');
var userData = {};
var dateArray = [];
var dataArray = [];
var barCh
就像标题上说的那样,我是格伦特的新手。我正在学习一个位于:的教程。这是一个较早的教程,但大多数似乎都是一样的。我安装了“咕噜但是,当我运行grunt时,我会得到以下错误:Warning: Task "concat, uglify" not found. Use --force to continue. Aborted due to errors.,我一直在四处寻找,似乎找不出答案。我的档案如下:
Gruntfile.js:
module.exports = function(grunt) {
// 1. All configuration goes h
var filterFn = require('./solution_filter.js')
var dir = process.argv[2]
var filterStr = process.argv[3]
filterFn(dir, filterStr, function (err, list) {
if (err)
return console.error('There was an error:', err)
list.forEach(function (file) {
console.log(file)
})
})
我理
我有一个示例笔记本应用程序,可以使用ember-cli的HTTP mock,也可以使用ActiveModelSerializer作为rails后端。
当我使用ember-fire将它连接到firebase时,我可以注册一个用户(我在仪表板中看到它),但当我试图通过电子邮件检索它时,我得到了以下警告:
WARNING: Encountered "0" in payload, but no model was found for model name "0" (resolved model name using ui@serializer:application:.
我有一个云功能,运行Express作为web钩子端点。我的客户端发送一个带有空正文值的POST请求。该服务将返回带有此日志的400 Bad请求:
SyntaxError: Unexpected token # in JSON at position 0
at Object.parse (native)
at createStrictSyntaxError (/var/tmp/worker/node_modules/body-parser/lib/types/json.js:157:10)
at parse (/var/tmp/worker/node_module
我收到了很多错误,不知道从哪里开始。 错误消息 > webpack
[webpack-cli] Invalid configuration object. Webpack has been initialized using a configuration object that does not match the API schema.
- configuration.module.rules[1] should be one of these:
["..." | object { assert?, compiler?, dependency?, desc
以下是代码:
var net = require('net');
var clientList = [];
var chatServer = net.createServer(function(socket){
socket.write("Hi\n");
clientList.push(socket);
socket.setEncoding('utf-8');
socket.on('data', function(data){
for (var i = 0; i < c
试图解决下面的缺失数问题
Input: nums = [0,1]
Output: 2
Explanation: n = 2 since there are 2 numbers, so all numbers are in the range [0,2]. 2 is the missing number in the range since it does not appear in nums.
它的解决方案产生了不正确的语法错误,这段代码中的任何帮助,基本上是构造了大小为n+1的数组,以便为缺少的元素留出一个位置。然后将每
的嵌入代码(通过Google管理器的gtags.js)看起来如下:
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=REDACTED"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(argume
以下是相同递归函数的两个工作版本(用于Node.js)。
版本1
function getDependencies(mod, result) {
result = result || []
var dependencies = mod.dependencies || []
Object.keys(dependencies).forEach(function(dep) {
var key = dep + '@' + mod.dependencies[dep].version
if (result.indexOf(key) === -1) result.
当一个用户SignUP时,我想在标题中显示他的名字,但它显示为空,当我刷新页面时,它显示正确的名称。为什么这不是自动渲染更改用户名。 homepage.js const [username, setusername] = useState('loading..')
useEffect(() => {
setusername(auth.currentUser.displayName);
}, [[auth.currentUser.displayName]])
// Some more work here
return(