在Javascript中阅读此语法对我来说真的很混乱:
router.route('/:id')
.put((...args) => controller.update(...args))
.get((...args) => controller.findById(...args));
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什么... args意味着什么?
我现在需要在Javascript中看到这样的表达式的含义
static get is() { return "custom-element"; }
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我想这static可能有类似于Java或C++的行为,但我需要有关这些语法的更多信息.
我有使用webpack捆绑我的应用程序的问题,我在网站上阅读类似的问题,虽然我已经尝试了所有的建议,但我无法弄清楚出了什么问题.
一切都很好.但是,当我打开浏览器时显示此错误:
未捕获的ReferenceError:require未定义
const webpack = require('webpack');
const conf = require('./gulp.conf');
const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const FailPlugin = require('webpack-fail-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');
const pkg = require('../package.json');
const autoprefixer = require('autoprefixer');
const nodeExternals = require('webpack-node-externals');
module.exports = {
module: {
loaders: [
{
test: /\.json$/,
loaders: [
'json-loader'
]
},
{
test: /\.js$/,
exclude: /node_modules/,
loader: 'eslint-loader',
enforce: 'pre'
},
{
test: /\.(css|scss)$/,
loaders: ExtractTextPlugin.extract({
fallback: 'style-loader',
use: 'css-loader?minimize!sass-loader!postcss-loader'
})
},
{
test: /\.js$/,
exclude: …Run Code Online (Sandbox Code Playgroud) 命令Ctrl + W可以关闭一个单独的选项卡,但有一些方法可以关闭它们吗?或者某种方式来配置?
我很困惑使用writeFile方法编写 .xlsx 文件,因为我得到了一个空文件。
该函数接收一个有效的工作表对象(我检查过),工作表名称显示良好但文件中没有信息。下面是我的代码,在此先感谢您。
function saveToExcel(event, worksheet) {
const workbook = XLSX.utils.book_new();
XLSX.utils.book_append_sheet(workbook, worksheet, "Lista de Evaporadores");
event.sender.send('verga', workbook);
XLSX.writeFile(workbook, `books/lista-evaporadores.xlsx`, {type: 'file'});
open('books/lista-evaporadores.xlsx');
}
Run Code Online (Sandbox Code Playgroud) 我的 macbook pro m1 上安装了 php 7.4
% php -v
PHP 7.4.15 (cli) (built: Feb 26 2021 09:28:23) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
with Zend OPcache v7.4.15, Copyright (c), by Zend Technologies
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我正在尝试安装运行的 mongodb 驱动程序:
sudo pecl install mongodb
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但一段时间后失败:
mp/pear/temp/mongodb/src/contrib/ -DHAVE_CONFIG_H -g -O2 -c /private/tmp/pear/temp/mongodb/php_phongo.c -fno-common -DPIC -o .libs/php_phongo.o
In file included from /private/tmp/pear/temp/mongodb/php_phongo.c:29:
In file included from /opt/homebrew/Cellar/php@7.4/7.4.15_1/include/php/ext/spl/spl_iterators.h:24:
/opt/homebrew/Cellar/php@7.4/7.4.15_1/include/php/ext/pcre/php_pcre.h:25:10: fatal error: 'pcre2.h' file not found
#include "pcre2.h"
^~~~~~~~~ …Run Code Online (Sandbox Code Playgroud) javascript ×3
ecmascript-6 ×2
babel ×1
excel ×1
express ×1
js-xlsx ×1
mongodb ×1
pecl ×1
php ×1
sheetjs ×1
sublimetext3 ×1
webpack ×1