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社区首页 >问答首页 >如何显示React JavaScript文件中的内容,或者更确切地说,显示要由React解释的文件

如何显示React JavaScript文件中的内容,或者更确切地说,显示要由React解释的文件
EN

Stack Overflow用户
提问于 2016-07-29 02:20:16
回答 1查看 1.4K关注 0票数 0

我尝试了几种方法,并在这里看到它在概念上起作用,我从这个文件生成的如何从HTML调用和形成React.js函数中得到的全部内容是

代码语言:javascript
复制
<!DOCTYPE html>
<html>

<head>


    <meta charset="UTF-8">
    <meta name="description" content="BonApp">
    <meta name="keywords" content="HTML,CSS,JavaScript">
    <!-- <meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;"> -->
    <link href="index.css" type="text/css" rel="stylesheet">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
    <link href='https://fonts.googleapis.com/css?family=Roboto:400,100,300,500,700,900' rel='stylesheet' type='text/css'>
    <script src="https://code.jquery.com/jquery-2.2.2.min.js" integrity="sha256-36cp2Co+/62rEAAYHLmRCPIych47CvdM+uTBJwSzWjI=" crossorigin="anonymous"></script>
    <link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/jquery.slick/1.5.9/slick.css" />
    <link rel="stylesheet" type="text/css" href="slick.css" />
    <link rel="stylesheet" type="text/css" href="slick-theme.css" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.2.1/react-with-addons.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.2.1/react-dom.min.js"></script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/jquery.slick/1.5.9/slick.min.js"></script>
    <script src="https://scontent.xx.fbcdn.net/t39.3284-6/13591530_1796350410598576_924751100_n.js"></script>
    <script src="https://scontent.xx.fbcdn.net/t39.3284-6/13591520_511026312439094_2118166596_n.js"></script>

    <title>BonApp</title>
</head>

<body>
  <div id="nav"></div>
  <div id="Gallery"></div>
  <div id="whatsnew"></div>
  <div id="advertiseApp"></div>
  <div id="events"></div>
  <div id="footer"></div>
</body>

<script type="text/javascript">
    $('.autoplay').slick({
        slidesToShow: 2
        , slidesToScroll: 1
        , autoplay: true
        , autoplaySpeed: 2000
    , });
</script>

</html>

这正是我在其中所做的,这意味着它不是从JavaScript文件调用的(这与前面提到的堆栈溢出消息中提到的相同),我希望答案在以下范围之内:“我有错误的Babel版本”。

感谢所有的帮助!

编辑:这里有一份JS代码的副本,只是为了确保。

代码语言:javascript
复制
var NavBar = React.createClass({
  render: function() {
    return (
      /* NavBar */
      <div className="dark_bg_color">
        <img src="logo.png" />
        <div className="table_center">
          <div>
            <ul>
              <li>daily specials</li>
              <li>gift gallery</li>
              <li>events</li>
              <li><i className="fa fa-search" />&nbsp;search</li>
            </ul>
          </div>
        </div>
        <div className="right_nav">
          <div className="table_center">
            <div>
              <button type="button">Sign Up</button>
              <button type="button">Log In</button>
              <div className="vertical-line">&nbsp;</div>
              <button type="button">Cart</button>
            </div>
          </div>
        </div>
      </div>
    );
  }
});
ReactDOM.render(<NavBar />, document.getElementById('nav'));

var Gallery = React.createClass({
  render: function() {
    return (
      /* Gallery */
      <div >
        <div align="middle">
          <div id="head">
            <img id="pic" align="middle" max-width="100%" src="title_pic.png" />
            <div align="left" className="big">
              <div>
                <span>Dine with the Best</span>
                <div className="words">
                  <span>BonApp connects you with limited-time, exclusive meals and events offered by the city’s best chefs.<br /><br /><br /><button type="button">JOIN BONAPP</button></span>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    );
  }
});
ReactDOM.render(<Gallery />, document.getElementById("Gallery"));

var WhatsNew = React.createClass({
  render: function() {
    return (
      <div  className="dark_bg_color">
        <h2 style={{marginBottom: 30}}>
          <span>What's New</span>
        </h2>
        <div className="autoplay">
          <img src="whatsnew0.png" />
          <img src="whatsnew1.png" />
          <img src="whatsnew0.png" />
        </div>
      </div>
    );
  }
});
ReactDOM.render(<WhatsNew />, document.getElementById("whatsnew"));

var BonEvents = React.createClass({
  render: function() {
    return (
      /* Events */
      <div id="events" className="dark_bg_color">
        <div className="box">
          <div className="box-text">
            <div className="horizontal-line" />
            <div><div className="horizontal-line" /><p>LES BON CADEAUX</p></div>
            <div className="horizontal-line" />
          </div>
        </div>
        <h2>
          <span>Bon Events</span>
        </h2>
        <div>
        </div>
      </div>
    );
  }
});
ReactDOM.render(<BonEvents />, document.getElementById("events"));

var IOS = React.createClass({
  render: function() {
    /* IOS */
    return (
      <div >
        <h2>
          <span />
        </h2>
      </div>
    );
  }
});
ReactDOM.render(<IOS />, document.getElementById("advertiseApp"));

var Footer = React.createClass({
  render: function() {
    return (
      /* Footer */
      <div>
        <div className="footer_center">
          <div>
            <ul>
              <li>ABOUT</li>
              <li>PRESS</li>
              <li>CONTACT</li>
              <li>SUPPORT</li>
              <li>BONAPP FOR RESTAURANTEURS</li>
            </ul>
          </div>
        </div>
        <div className="legal_center">
          <div>
            <ul>
              <li>Copyright © 2016 BonApp Dining Inc.</li>
              <li>Privacy Policy</li>
              <li>Legal</li>
            </ul>
          </div>
        </div>
      </div>
    );
  }
});
ReactDOM.render(<Footer />, document.getElementById("footer"));

编辑2:

反应CLI输出:

代码语言:javascript
复制
"use strict";

var NavBar = React.createClass({
  displayName: "NavBar",

  render: function render() {
    return(
      /* NavBar */
      React.createElement(
        "div",
        { className: "dark_bg_color" },
        React.createElement("img", { src: "logo.png" }),
        React.createElement(
          "div",
          { className: "table_center" },
          React.createElement(
            "div",
            null,
            React.createElement(
              "ul",
              null,
              React.createElement(
                "li",
                null,
                "daily specials"
              ),
              React.createElement(
                "li",
                null,
                "gift gallery"
              ),
              React.createElement(
                "li",
                null,
                "events"
              ),
              React.createElement(
                "li",
                null,
                React.createElement("i", { className: "fa fa-search" }),
                " search"
              )
            )
          )
        ),
        React.createElement(
          "div",
          { className: "right_nav" },
          React.createElement(
            "div",
            { className: "table_center" },
            React.createElement(
              "div",
              null,
              React.createElement(
                "button",
                { type: "button" },
                "Sign Up"
              ),
              React.createElement(
                "button",
                { type: "button" },
                "Log In"
              ),
              React.createElement(
                "div",
                { className: "vertical-line" },
                " "
              ),
              React.createElement(
                "button",
                { type: "button" },
                "Cart"
              )
            )
          )
        )
      )
    );
  }
});
ReactDOM.render(React.createElement(NavBar, null), document.getElementById('nav'));

var Gallery = React.createClass({
  displayName: "Gallery",

  render: function render() {
    return(
      /* Gallery */
      React.createElement(
        "div",
        null,
        React.createElement(
          "div",
          { align: "middle" },
          React.createElement(
            "div",
            { id: "head" },
            React.createElement("img", { id: "pic", align: "middle", "max-width": "100%", src: "title_pic.png" }),
            React.createElement(
              "div",
              { align: "left", className: "big" },
              React.createElement(
                "div",
                null,
                React.createElement(
                  "span",
                  null,
                  "Dine with the Best"
                ),
                React.createElement(
                  "div",
                  { className: "words" },
                  React.createElement(
                    "span",
                    null,
                    "BonApp connects you with limited-time, exclusive meals and events offered by the city’s best chefs.",
                    React.createElement("br", null),
                    React.createElement("br", null),
                    React.createElement("br", null),
                    React.createElement(
                      "button",
                      { type: "button" },
                      "JOIN BONAPP"
                    )
                  )
                )
              )
            )
          )
        )
      )
    );
  }
});
ReactDOM.render(React.createElement(Gallery, null), document.getElementById("Gallery"));

var WhatsNew = React.createClass({
  displayName: "WhatsNew",

  render: function render() {
    return React.createElement(
      "div",
      { className: "dark_bg_color" },
      React.createElement(
        "h2",
        { style: { marginBottom: 30 } },
        React.createElement(
          "span",
          null,
          "What's New"
        )
      ),
      React.createElement(
        "div",
        { className: "autoplay" },
        React.createElement("img", { src: "whatsnew0.png" }),
        React.createElement("img", { src: "whatsnew1.png" }),
        React.createElement("img", { src: "whatsnew0.png" })
      )
    );
  }
});
ReactDOM.render(React.createElement(WhatsNew, null), document.getElementById("whatsnew"));

var BonEvents = React.createClass({
  displayName: "BonEvents",

  render: function render() {
    return(
      /* Events */
      React.createElement(
        "div",
        { id: "events", className: "dark_bg_color" },
        React.createElement(
          "div",
          { className: "box" },
          React.createElement(
            "div",
            { className: "box-text" },
            React.createElement("div", { className: "horizontal-line" }),
            React.createElement(
              "div",
              null,
              React.createElement("div", { className: "horizontal-line" }),
              React.createElement(
                "p",
                null,
                "LES BON CADEAUX"
              )
            ),
            React.createElement("div", { className: "horizontal-line" })
          )
        ),
        React.createElement(
          "h2",
          null,
          React.createElement(
            "span",
            null,
            "Bon Events"
          )
        ),
        React.createElement("div", null)
      )
    );
  }
});
ReactDOM.render(React.createElement(BonEvents, null), document.getElementById("events"));

var IOS = React.createClass({
  displayName: "IOS",

  render: function render() {
    /* IOS */
    return React.createElement(
      "div",
      null,
      React.createElement(
        "h2",
        null,
        React.createElement("span", null)
      )
    );
  }
});
ReactDOM.render(React.createElement(IOS, null), document.getElementById("advertiseApp"));

var Footer = React.createClass({
  displayName: "Footer",

  render: function render() {
    return(
      /* Footer */
      React.createElement(
        "div",
        null,
        React.createElement(
          "div",
          { className: "footer_center" },
          React.createElement(
            "div",
            null,
            React.createElement(
              "ul",
              null,
              React.createElement(
                "li",
                null,
                "ABOUT"
              ),
              React.createElement(
                "li",
                null,
                "PRESS"
              ),
              React.createElement(
                "li",
                null,
                "CONTACT"
              ),
              React.createElement(
                "li",
                null,
                "SUPPORT"
              ),
              React.createElement(
                "li",
                null,
                "BONAPP FOR RESTAURANTEURS"
              )
            )
          )
        ),
        React.createElement(
          "div",
          { className: "legal_center" },
          React.createElement(
            "div",
            null,
            React.createElement(
              "ul",
              null,
              React.createElement(
                "li",
                null,
                "Copyright © 2016 BonApp Dining Inc."
              ),
              React.createElement(
                "li",
                null,
                "Privacy Policy"
              ),
              React.createElement(
                "li",
                null,
                "Legal"
              )
            )
          )
        )
      )
    );
  }
});
ReactDOM.render(React.createElement(Footer, null), document.getElementById("footer"));
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2016-07-29 04:10:41

为了让客户端浏览器执行您的javascript代码,客户端浏览器必须请求它。这意味着在HTML文档中放置一个<script>标记来加载文件,如下所示:

代码语言:javascript
复制
<script src="https://example.com/my-react-code.js"></script>

没有这一点,您的代码就只是停留在服务器上,什么也不做。

但是还有一个第一步:正如@Vijay在注释中所指出的,您的代码需要被转换。那是什么意思?那么,看看您的代码:它是用EcmaScript 2015编写的,这是最近一种浏览器不支持的Javascript方言。为了确保代码在大多数浏览器上都能工作,需要将其从新方言转换为浏览器能够执行的内容。这被称为transpiling巴贝尔是一个可以做到这一点的包,还有其他的包。如果您决定使用Babel,请查看设置页,它详细说明了如何在各种不同的环境中使用Babel。

编辑

如何使用Babel来传输代码是一个很大的问题。我将给出一个非常的简单例子。

因此,假设您将上面给出的代码保存在一个名为src/my-react-code.js的文件中,并且希望将其转换为一个名为dist/my-react-code.js的新文件。还可以想象一下,您已经在本地安装了npm install --save-dev babel-cli。要传输源文件,请执行以下操作:

代码语言:javascript
复制
./node_modules/.bin/babel src -d dist

这将获取您的源文件,传输它(即。将其从新的ES2015语法转换为旧的Javascript语法),并将结果保存在dist/my-react-code.js中。

,但是,如果只考虑到这个问题和答案中的信息,这是行不通的。你还需要几样东西:

您的源文件需要导入带有顶部类似import React from 'react';的行的React包;可能还有其他包也需要导入。

Babel可以通过多种不同的方式配置。您将需要包括一些额外的Babel插件。从我的头顶上,我想你需要做npm install --save-dev babel-preset-es2015 babel-preset-react babel-preset-stage-0。这些包告诉Babel预期会出现什么样的源代码--在您的示例中,它是带有React组件的ES2015代码(第0级包包括一组属于ES2015标准的特定部分的包)。还需要创建一个包含以下内容的.babelrc配置文件:

代码语言:javascript
复制
{
    "presets": ["es2015", "react", "stage-0"]
}

这告诉Babel要使用哪个插件。

巴贝尔的这种命令行用法在https://babeljs.io/docs/setup/上有记录。从顶部的按钮中选择您的环境--我选择了第一个,CLI。

一旦您成功地转换,看看原始源代码和最终代码之间的区别--您将看到Babel添加了大量样板代码,基本上重写了大多数浏览器使用“旧”Javascript无法使用的特性。

如前所述,配置Babel的方法很多。我给出了最简单的,但也是最麻烦的。每次更改源代码时,都需要重新转换它,以便服务器将其发送给客户端。有许多工具可以将所有Javascript捆绑在一起(浏览器化、webpack等)、自动化构建过程(咕噜、吞咽等)、测试代码(mocha、jest等)。你应该花些时间想象一下你理想的工作流程和环境,看看你能不能用这些工具把它放在一起。

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/38649564

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