如何在与html不同的文件中编写Paper.js脚本？（我按照图书馆的指示，但仍然无法正常工作）

Question

It seems silly, but it is annoying. 这看起来很傻，但很烦人。 I am using VScode and I am trying to code a js script in a different file to get the highlight syntax, but it isn't working (I could change the json content as suggested in another stackoverflow question and enter it inline, but I would like to have a separated file). 我正在使用VScode，我正在尝试在不同的文件中编写一个js脚本来获取突出显示语法，但它不起作用（我可以按照另一个stackoverflow问题中的建议更改json内容并输入内联，但我会喜欢有一个单独的文件）。

The files are all in the same folder: 这些文件都在同一个文件夹中：

paper-full.js 纸full.js
circles.js circles.js
circles.html circles.html

If I try to run the html page with the script inline, the chrome loads smoothly 如果我尝试使用内联脚本运行html页面，则chrome会平滑加载

The circles.html with script inline 使用脚本内联的circles.html

circles.html circles.html

<!DOCTYPE html>
<html>
    <head>
        <title>Circles</title>
        <!-- Load the Paper.js library -->
        <script type="text/javascript" src="paper-full.js"></script>
        <link rel="stylesheet" type="text/css" href="circles.css">
        <!-- <script type="text/paperscript" src="circles.js" canvas="myCanvas"></script> -->
        <script type="text/paperscript" canvas="myCanvas">
            // Create a Paper.js Path to draw a line into it:
            var path = new Path();
            // Give the stroke a color
            path.strokeColor = 'black';
            var start = new Point(100, 100);
            // Move to start and draw a line from there
            path.moveTo(start);
            // Note the plus operator on Point objects.
            // PaperScript does that for us, and much more!
            path.lineTo(start + [ 100, -50 ]);
        </script>
    </head>
    <body>
        <canvas id="myCanvas" resize></canvas>
    </body>
</html>

But when I try to get a separate file to this script (like suggested in http://paperjs.org/tutorials/getting-started/working-with-paper-js/ ), the browser gives error 但是当我尝试将一个单独的文件添加到此脚本时（如http://paperjs.org/tutorials/getting-started/working-with-paper-js/中所示），浏览器会出错

The circles.html and circles.js, in different files circle.html和circles.js，位于不同的文件中

circles.html circles.html

<!DOCTYPE html>
<html>
    <head>
        <title>Circles</title>
        <!-- Load the Paper.js library -->
        <script type="text/javascript" src="paper-full.js"></script>
        <link rel="stylesheet" type="text/css" href="circles.css">
        <!-- <script type="text/paperscript" src="circles.js" canvas="myCanvas"></script> -->
        <script type="text/paperscript" canvas="myCanvas" src="circles.js"></script>
    </head>
    <body>
        <canvas id="myCanvas" resize></canvas>
    </body>
</html>

circles.js circles.js

// Create a Paper.js Path to draw a line into it:
var path = new Path();
// Give the stroke a color
path.strokeColor = 'red';
var start = new Point(100, 100);
// Move to start and draw a line from there
path.moveTo(start);
// Note the plus operator on Point objects.
// PaperScript does that for us, and much more!
path.lineTo(start + [ 100, -50 ]);

var myCircle = new Path.Circle(new Point(100, 70), 50);
myCircle.fillColor = 'black';

The browser alerts: 浏览器提醒：

Error 1: 错误1：

Access to XMLHttpRequest at 'file:///Users/jarvis/Documents/webnoob/webdev/basscolors/circles.js' from origin 'null' has been blocked by CORS policy: Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https.

request @ paper-full.js:13929

paper-full.js:13929

Error 2: 错误2：

Uncaught DOMException: Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'file:///Users/jarvis/Documents/webnoob/webdev/basscolors/circles.js'.

    at Object.request (file:///Users/jarvis/Documents/webnoob/webdev/basscolors/paper-full.js:13929:14)

    at HTMLCollection.loadScript (file:///Users/jarvis/Documents/webnoob/webdev/basscolors/paper-full.js:16957:10)

    at HTMLCollection.forIn (file:///Users/jarvis/Documents/webnoob/webdev/basscolors/paper-full.js:56:11)

    at Function.each (file:///Users/jarvis/Documents/webnoob/webdev/basscolors/paper-full.js:75:7)

    at loadAll (file:///Users/jarvis/Documents/webnoob/webdev/basscolors/paper-full.js:16974:8)

Warning: 警告：

[Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.

request @ paper-full.js:13905

I've tried some answers through google about this error, but none of them really solved it, it seems I am hurting the http protocol. 我已经通过谷歌尝试了一些关于这个错误的答案，但他们都没有真正解决它，似乎我正在伤害http协议。 How should I fix it, what am I missing? 我应该怎么解决它，我错过了什么？

Answer 1

PaperScript code is loaded just like any other JavaScript using the <script> tag, except for the type being set to "text/paperscript" or "text/x-paperscript" . PaperScript代码的加载方式与使用<script>标记的任何其他JavaScript一样，但设置为“text / paperscript”或“text / x-paperscript”的类型除外。 The code can either be an external file (src="URL"), or inlined: 代码可以是外部文件（src =“URL”），也可以是内联文件：

<!DOCTYPE html>
<html>
<head>
<!-- Load the Paper.js library -->
<script type="text/javascript" src="js/paper.js"></script>
<!-- Define inlined PaperScript associate it with myCanvas -->
<script type="text/paperscript" canvas="myCanvas">
    // Create a Paper.js Path to draw a line into it:
    var path = new Path();
    // Give the stroke a color
    path.strokeColor = 'black';
    var start = new Point(100, 100);
    // Move to start and draw a line from there
    path.moveTo(start);
    // Note the plus operator on Point objects.
    // PaperScript does that for us, and much more!
    path.lineTo(start + [ 100, -50 ]);
</script>
</head>
<body>
    <canvas id="myCanvas" resize></canvas>
</body>
</html>

If we copy the inlined code to a file called js/myScript.js we can rewrite the above example to load the external file instead. 如果我们将内联代码复制到名为js / myScript.js的文件中，我们可以重写上面的示例来加载外部文件。

<!DOCTYPE html>
<html>
<head>
<!-- Load the Paper.js library -->
<script type="text/javascript" src="js/paper.js"></script>
<!-- Load external PaperScript and associate it with myCanvas -->
<script type="text/paperscript" src="js/myScript.js" canvas="myCanvas">
</script>
</head>
<body>
    <canvas id="myCanvas" resize></canvas>
</body>
</html>

Source : http://paperjs.org/tutorials/getting-started/working-with-paper-js/ 资料来源： http ： //paperjs.org/tutorials/getting-started/working-with-paper-js/

如何在与html不同的文件中编写Paper.js脚本？（我按照图书馆的指示，但仍然无法正常工作）

问题描述

1 个解决方案

解决方案1
0 已采纳 2019-08-02 22:08:09

如何在与html不同的文件中编写Paper.js脚本？ （我按照图书馆的指示，但仍然无法正常工作）

问题描述

1 个解决方案

解决方案1 0 已采纳 2019-08-02 22:08:09

如何在与html不同的文件中编写Paper.js脚本？（我按照图书馆的指示，但仍然无法正常工作）

解决方案1
0 已采纳 2019-08-02 22:08:09