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一、加載 json 文件

內(nèi)置支持 JSON 解析，也就是說 import Data from './data.json' 默認(rèn)將正常運(yùn)行。

1.1 添加 json 文件

  demo09
  |- package.json
  |- webpack.config.js
  |- /dist
    |- bundle.js
    |- index.html
  |- /src
    |- 華文彩云.ttf
    |- icon.png
    |- style.css
    |- index.js
  + |- /data
  +     |- json.json    
  |- /node_modules

1.2 編輯 index.js 文件

import "./style.css"
import Icon from './icon.jpg';
import jsonData from "./data/json.json"

//生成一個內(nèi)容為Hello webpack !的div標(biāo)簽
function component() {
    let element = document.createElement('div');
    element.innerHTML = "Hello webpack !";
    //添加class
    element.classList.add("hello");
    return element;
}
//將生成的div標(biāo)簽添加到body中去
document.body.appendChild(component());


function addImage() {
    let element = document.createElement('img');
    //設(shè)置圖片路徑
    element.src = Icon;
    //添加class
    element.classList.add("image");
    return element;
}
//將生成的img標(biāo)簽添加到body中去
document.body.appendChild(addImage());

//打印 JSON 數(shù)據(jù)
console.log("JSON",jsonData);

1.3 重新構(gòu)建

npm run build
//或者
yanr build

yarn run v1.16.0
$ webpack
Hash: 60e06afbd947848d1740
Version: webpack 4.35.3
Time: 585ms
Built at: 07/18/2019 3:12:17 PM
                               Asset     Size  Chunks                    Chunk Names
71eaacb7c100911a2acca6547fa6520a.ttf  5.4 MiB          [emitted]  [big]  
76e7e08e0b3a04a612c89ad13c999813.jpg   51 KiB          [emitted]         
                           bundle.js  7.8 KiB       0  [emitted]         main
Entrypoint main = bundle.js
[0] ./src/icon.jpg 82 bytes {0} [built]
[1] ./src/data/json.json 70 bytes {0} [built]
[2] ./src/index.js 657 bytes {0} [built]
[3] ./src/style.css 1.06 KiB {0} [built]
[4] ./node_modules/css-loader/dist/cjs.js!./src/style.css 558 bytes {0} [built]
[7] ./src/華文彩云.ttf 82 bytes {0} [built]
    + 4 hidden modules

WARNING in configuration
The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment.
You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/configuration/mode/

WARNING in asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).
This can impact web performance.
Assets: 
  71eaacb7c100911a2acca6547fa6520a.ttf (5.4 MiB)

WARNING in webpack performance recommendations: 
You can limit the size of your bundles by using import() or require.ensure to lazy load some parts of your application.
For more info visit https://webpack.js.org/guides/code-splitting/
?  Done in 1.52s.

1.4 運(yùn)行 index.html 文件

在 Chrome 瀏覽器中打開文件，然后使用檢查功能，查看 Console 控制臺輸出

JSON Object
    name: "Webpack"
    url: "https://webpack.docschina.org"
    __proto__: Object

二、加載 xml 文件

解析 xml 文件需要 xml-loader 支持。

2.1 添加 xml 文件

  demo09
  |- package.json
  |- webpack.config.js
  |- /dist
    |- bundle.js
    |- index.html
  |- /src
    |- 華文彩云.ttf
    |- icon.png
    |- style.css
    |- index.js
    |- /data
       |- json.json
  +    |- xml.xml
  |- /node_modules

2.2 安裝 xml-loader

npm install --save-dev xml-loader
//或者
yarn add xml-loader --dev

安裝成功

yarn add v1.16.0
[1/4] ??  Resolving packages...
info There appears to be trouble with your network connection. Retrying...
[2/4] ??  Fetching packages...
[3/4] ??  Linking dependencies...
[4/4] ??  Building fresh packages...
success Saved lockfile.
success Saved 3 new dependencies.
info Direct dependencies
└─ xml-loader@1.2.1
info All dependencies
├─ xml-loader@1.2.1
├─ xml2js@0.4.19
└─ xmlbuilder@9.0.7
?  Done in 97.46s.

2.3 編輯 webpack.config.js 文件

const path = require('path');

module.exports = {
    entry: './src/index.js',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    module:{
        rules:[
            {
                test:/\.css$/,
                use:[
                    "style-loader",
                    "css-loader"
                ]
            },
            {
                test:/\.(png|svg|jpg|gif)$/,
                use:[
                    "file-loader"
                ]
            },
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/,
                use: [
                    'file-loader'
                ]
            },
            //添加 xml-loader 
            {
                test:/\.xml$/,
                use:[
                    "xml-loader"
                ]
            }
        ]
    }
};

2.4 編輯 index.js 文件

import "./style.css"
import Icon from './icon.jpg';
import jsonData from "./data/json.json"
import xmlData from "./data/xml.xml"


//生成一個內(nèi)容為Hello webpack !的div標(biāo)簽
function component() {
    let element = document.createElement('div');
    element.innerHTML = "Hello webpack !";
    //添加class
    element.classList.add("hello");
    return element;
}
//將生成的div標(biāo)簽添加到body中去
document.body.appendChild(component());


function addImage() {
    let element = document.createElement('img');
    //設(shè)置圖片路徑
    element.src = Icon;
    //添加class
    element.classList.add("image");
    return element;
}
//將生成的img標(biāo)簽添加到body中去
document.body.appendChild(addImage());

//打印 JSON 數(shù)據(jù)
console.log("JSON",jsonData);

//打印 XML 數(shù)據(jù)
console.log("XML",xmlData);

2.5 重新構(gòu)建

npm run build
//或者
yanr build

構(gòu)建完成

yarn run v1.16.0
$ webpack
Hash: bf43775a50bb772ed478
Version: webpack 4.35.3
Time: 589ms
Built at: 07/18/2019 3:28:27 PM
                               Asset      Size  Chunks                    Chunk Names
71eaacb7c100911a2acca6547fa6520a.ttf   5.4 MiB          [emitted]  [big]  
76e7e08e0b3a04a612c89ad13c999813.jpg    51 KiB          [emitted]         
                           bundle.js  7.88 KiB       0  [emitted]         main
Entrypoint main = bundle.js
[0] ./src/icon.jpg 82 bytes {0} [built]
[1] ./src/data/json.json 70 bytes {0} [built]
[2] ./src/data/xml.xml 35 bytes {0} [built]
[3] ./src/index.js 736 bytes {0} [built]
[4] ./src/style.css 1.06 KiB {0} [built]
[5] ./node_modules/css-loader/dist/cjs.js!./src/style.css 558 bytes {0} [built]
[8] ./src/華文彩云.ttf 82 bytes {0} [built]
    + 4 hidden modules

WARNING in configuration
The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment.
You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/configuration/mode/

WARNING in asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).
This can impact web performance.
Assets: 
  71eaacb7c100911a2acca6547fa6520a.ttf (5.4 MiB)

WARNING in webpack performance recommendations: 
You can limit the size of your bundles by using import() or require.ensure to lazy load some parts of your application.
For more info visit https://webpack.js.org/guides/code-splitting/
?  Done in 1.28s.

2.6 運(yùn)行 index.html 文件

在 Chrome 瀏覽器中打開文件，然后使用檢查功能，查看 Console 控制臺輸出

XML {data: {…}}
    data:
    name: ["Webpack"]
    url: ["https://webpack.docschina.org"]
    __proto__: Object
__proto__: Object

三、加載csv 文件

解析 csv 文件需要 csv-loader 支持。

3.1 添加 csv 文件

  demo09
  |- package.json
  |- webpack.config.js
  |- /dist
    |- bundle.js
    |- index.html
  |- /src
    |- 華文彩云.ttf
    |- icon.png
    |- style.css
    |- index.js
    |- /data
       |- json.json
       |- xml.xml
  +    |- csv.csv
  |- /node_modules

3.2 安裝 csv-loader

npm install --save-dev csv-loader
//或者
yarn add csv-loader --dev

安裝成功

yarn add v1.16.0
[1/4] ??  Resolving packages...
[2/4] ??  Fetching packages...
[3/4] ??  Linking dependencies...
warning " > csv-loader@3.0.2" has unmet peer dependency "papaparse@^4.5.0".
[4/4] ??  Building fresh packages...
success Saved lockfile.
warning Your current version of Yarn is out of date. The latest version is "1.17.3", while you're on "1.16.0".
info To upgrade, run the following command:
$ brew upgrade yarn
success Saved 1 new dependency.
info Direct dependencies
└─ csv-loader@3.0.2
info All dependencies
└─ csv-loader@3.0.2
?  Done in 5.76s.

3.3 編輯 webpack.config.js 文件

const path = require('path');

module.exports = {
    entry: './src/index.js',
    output: {
        filename: 'bundle.js',
        path: path.resolve(__dirname, 'dist')
    },
    module:{
        rules:[
            {
                test:/\.css$/,
                use:[
                    "style-loader",
                    "css-loader"
                ]
            },
            {
                test:/\.(png|svg|jpg|gif)$/,
                use:[
                    "file-loader"
                ]
            },
            {
                test: /\.(woff|woff2|eot|ttf|otf)$/,
                use: [
                    'file-loader'
                ]
            },
            {
                test:/\.xml$/,
                use:[
                    "xml-loader"
                ]
            },
            {
                test:/\.csv$/,
                use:[
                    "csv-loader"
                ]
            },

        ]
    }
};

3.4 編輯 index.js 文件

import "./style.css"
import Icon from './icon.jpg';
import jsonData from "./data/json.json"
import xmlData from "./data/xml.xml"
import csvData from "./data/csv.csv"


//生成一個內(nèi)容為Hello webpack !的div標(biāo)簽
function component() {
    let element = document.createElement('div');
    element.innerHTML = "Hello webpack !";
    //添加class
    element.classList.add("hello");
    return element;
}
//將生成的div標(biāo)簽添加到body中去
document.body.appendChild(component());


function addImage() {
    let element = document.createElement('img');
    //設(shè)置圖片路徑
    element.src = Icon;
    //添加class
    element.classList.add("image");
    return element;
}
//將生成的img標(biāo)簽添加到body中去
document.body.appendChild(addImage());

//打印 JSON 數(shù)據(jù)
console.log("JSON",jsonData);

//打印 XML 數(shù)據(jù)
console.log("XML",xmlData);

//打印 CSV 數(shù)據(jù)
console.log("CSV",csvData);

3.5 重新構(gòu)建

npm run build
//或者
yanr build

3.5.1 構(gòu)建報錯

yarn run v1.16.0
$ webpack
Hash: b80ebf3efcac0c0baf95
Version: webpack 4.35.3
Time: 579ms
Built at: 07/18/2019 4:28:52 PM
 3 assets
Entrypoint main = bundle.js
[0] ./src/icon.jpg 82 bytes {0} [built]
[1] ./src/data/json.json 70 bytes {0} [built]
[2] ./src/data/xml.xml 86 bytes {0} [built]
[3] ./src/data/csv.csv 3.05 KiB {0} [not cacheable] [built] [failed] [1 error]
[4] ./src/index.js 817 bytes {0} [built]
[5] ./src/style.css 1.06 KiB {0} [built]
[6] ./node_modules/css-loader/dist/cjs.js!./src/style.css 558 bytes {0} [built]
[9] ./src/華文彩云.ttf 82 bytes {0} [built]
    + 4 hidden modules

WARNING in configuration
The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment.
You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/configuration/mode/

ERROR in ./src/data/csv.csv
Module build failed (from ./node_modules/csv-loader/index.js):
Error: Cannot find module 'papaparse'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
    at Object.<anonymous> (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/csv-loader/index.js:1:74)
    at Module._compile (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/v8-compile-cache/v8-compile-cache.js:192:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:787:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Module.require (internal/modules/cjs/loader.js:690:17)
    at require (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/v8-compile-cache/v8-compile-cache.js:161:20)
    at loadLoader (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/loader-runner/lib/loadLoader.js:18:17)
    at iteratePitchingLoaders (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/loader-runner/lib/LoaderRunner.js:169:2)
    at runLoaders (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/loader-runner/lib/LoaderRunner.js:365:2)
    at NormalModule.doBuild (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/NormalModule.js:281:3)
    at NormalModule.build (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/NormalModule.js:427:15)
    at Compilation.buildModule (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/Compilation.js:635:10)
    at factory.create (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/Compilation.js:882:14)
    at factory (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/NormalModuleFactory.js:409:6)
    at hooks.afterResolve.callAsync (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/NormalModuleFactory.js:155:13)
    at AsyncSeriesWaterfallHook.eval [as callAsync] (eval at create (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/tapable/lib/HookCodeFactory.js:33:10), <anonymous>:6:1)
    at resolver (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/NormalModuleFactory.js:138:29)
    at process.nextTick (/Users/zhangwenqi/Documents/GitHub/WebpackStudyNotes/09-加載數(shù)據(jù)/demo09/node_modules/webpack/lib/NormalModuleFactory.js:346:9)
    at process._tickCallback (internal/process/next_tick.js:61:11)
 @ ./src/index.js 5:0-37 38:18-26
error Command failed with exit code 2.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

3.5.2 解決辦法

安裝缺少的包 papaparse

npm install --save-dev papaparse
//或者
yarn add papaparse --dev

3.5.3 安裝成功

yarn add v1.16.0
[1/4] ??  Resolving packages...
[2/4] ??  Fetching packages...
[3/4] ??  Linking dependencies...
warning " > csv-loader@3.0.2" has incorrect peer dependency "papaparse@^4.5.0".
[4/4] ??  Building fresh packages...
success Saved lockfile.
success Saved 1 new dependency.
info Direct dependencies
└─ papaparse@5.0.0
info All dependencies
└─ papaparse@5.0.0
?  Done in 2.36s.

3.5.4 重新構(gòu)建完成

yarn run v1.16.0
$ webpack
Hash: caf59bb1a80ff4456bbe
Version: webpack 4.35.3
Time: 583ms
Built at: 07/18/2019 4:33:03 PM
                               Asset      Size  Chunks                    Chunk Names
71eaacb7c100911a2acca6547fa6520a.ttf   5.4 MiB          [emitted]  [big]  
76e7e08e0b3a04a612c89ad13c999813.jpg    51 KiB          [emitted]         
                           bundle.js  8.05 KiB       0  [emitted]         main
Entrypoint main = bundle.js
[0] ./src/icon.jpg 82 bytes {0} [built]
[1] ./src/data/json.json 70 bytes {0} [built]
[2] ./src/data/xml.xml 86 bytes {0} [built]
[3] ./src/data/csv.csv 77 bytes {0} [built]
[4] ./src/index.js 817 bytes {0} [built]
[5] ./src/style.css 1.06 KiB {0} [built]
[6] ./node_modules/css-loader/dist/cjs.js!./src/style.css 558 bytes {0} [built]
[9] ./src/華文彩云.ttf 82 bytes {0} [built]
    + 4 hidden modules

WARNING in configuration
The 'mode' option has not been set, webpack will fallback to 'production' for this value. Set 'mode' option to 'development' or 'production' to enable defaults for each environment.
You can also set it to 'none' to disable any default behavior. Learn more: https://webpack.js.org/configuration/mode/

WARNING in asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).
This can impact web performance.
Assets: 
  71eaacb7c100911a2acca6547fa6520a.ttf (5.4 MiB)

WARNING in webpack performance recommendations: 
You can limit the size of your bundles by using import() or require.ensure to lazy load some parts of your application.
For more info visit https://webpack.js.org/guides/code-splitting/
?  Done in 1.26s.

3.6 運(yùn)行 index.html 文件

在 Chrome 瀏覽器中打開文件，然后使用檢查功能，查看 Console 控制臺輸出

CSV (2) [Array(2), Array(2)]
    0: Array(2)
        0: "name"
        1: "url"
        length: 2
        __proto__: Array(0)
    1: Array(2)
        0: "Webpack"
        1: "https://webpack.docschina.org"
        length: 2
    __proto__: Array(0)
    length: 2
__proto__: Array(0)

參考鏈接

管理資源
示例代碼

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09- webpack 加載數(shù)據(jù)文件 json、xml、csv

09- webpack 加載數(shù)據(jù)文件 json、xml、csv

一、加載 json 文件

1.1 添加 json 文件

1.2 編輯 index.js 文件

1.3 重新構(gòu)建

1.4 運(yùn)行 index.html 文件

二、加載 xml 文件

2.1 添加 xml 文件

2.2 安裝 xml-loader

2.3 編輯 webpack.config.js 文件

2.4 編輯 index.js 文件

2.5 重新構(gòu)建

2.6 運(yùn)行 index.html 文件

三、加載csv 文件

3.1 添加 csv 文件

3.2 安裝 csv-loader

3.3 編輯 webpack.config.js 文件

3.4 編輯 index.js 文件

3.5 重新構(gòu)建

3.5.1 構(gòu)建報錯

3.5.2 解決辦法

3.5.3 安裝成功

3.5.4 重新構(gòu)建完成

3.6 運(yùn)行 index.html 文件

相關(guān)閱讀更多精彩內(nèi)容

友情鏈接更多精彩內(nèi)容

色偷偷精品伊人,欧洲久久精品,欧美综合婷婷骚逼,国产AV主播,国产最新探花在线,九色在线视频一区,伊人大交九 欧美,1769亚洲,黄色成人av

09- webpack 加載數(shù)據(jù)文件 json、xml、csv

一、加載 json 文件

1.1 添加 json 文件

1.2 編輯 index.js 文件

1.3 重新構(gòu)建

1.4 運(yùn)行 index.html 文件

二、加載 xml 文件

2.1 添加 xml 文件

2.2 安裝 xml-loader

2.3 編輯 webpack.config.js 文件

2.4 編輯 index.js 文件

2.5 重新構(gòu)建

2.6 運(yùn)行 index.html 文件

三、加載csv 文件

3.1 添加 csv 文件

3.2 安裝 csv-loader

3.3 編輯 webpack.config.js 文件

3.4 編輯 index.js 文件

3.5 重新構(gòu)建

3.5.1 構(gòu)建報錯

3.5.2 解決辦法

3.5.3 安裝成功

3.5.4 重新構(gòu)建完成

3.6 運(yùn)行 index.html 文件

相關(guān)閱讀更多精彩內(nèi)容

友情鏈接更多精彩內(nèi)容

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09- webpack 加載數(shù)據(jù)文件 json、xml、csv

一、加載 json 文件

二、加載 xml 文件

三、加載csv 文件