javascript - 未捕获的ReferenceError：未定义WEBGL(Uncaught ReferenceError: WEBGL is not defined)

Question

In my HTML, following code portion(在我的HTML中，以下代码部分)

if (WEBGL.isWebGLAvailable()==false) {
    document.body.appendChild(WEBGL.getWebGLErrorMessage());
}

generates following error on console:(在控制台上生成以下错误：)

Uncaught ReferenceError: WEBGL is not defined(未捕获的ReferenceError：未定义WEBGL)

I am already importing all necessary js, so the question is: how do you solve this?(我已经导入了所有必需的js，所以问题是：如何解决这个问题？)

  ask by Employee translate from so

Answer 1

Seems like you're using three.js library.(似乎您正在使用three.js库。)

As the docs mention:(正如文档所述：)

Add https://github.com/mrdoob/three.js/blob/master/examples/jsm/WebGL.js to your javascript and run the following before attempting to render anything.(将https://github.com/mrdoob/three.js/blob/master/examples/jsm/WebGL.js添加到您的javascript中，并在尝试呈现任何内容之前运行以下命令。)

if ( WEBGL.isWebGLAvailable() ) {

    // Initiate function or other initializations here
    animate();

} else {

    var warning = WEBGL.getWebGLErrorMessage();
    document.getElementById( 'container' ).appendChild( warning );

}

So I don't think you actually loaded the required script.(因此，我认为您实际上并未加载所需的脚本。)

Source: https://threejs.org/docs/#manual/en/introduction/WebGL-compatibility-check(来源： https : //threejs.org/docs/#manual/en/introduction/WebGL-compatibility-check)