The method renderer.isWebGLAvailable is undefined in the current context, referenced at filename.html

Question

The method renderer.isWebGLAvailable is undefined in the current context, referenced at filename.html

After making progress on solving my link problem, I am now encountering an uncaught TypeError: rendere.isWEBglAvailable is not a function at filname.html. What steps do I need to take to resolve this issue and make it work?

 <title>3D Montageanalysetool</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <link rel="shortcut icon" href="#" />
        <link href="index.css" rel="stylesheet" type="text/css"/>

        <script src="Libraries/three.min.js" type="text/javascript"></script>
        <script src="Libraries/OrbitControls.js" type="text/javascript"></script>
        <script src="Libraries/OBJLoader.js" type="text/javascript"></script>
        <script src="Libraries/MTLLoader.js" type="text/javascript"></script>

        <!-- ZURBFundation links-->
        <link href="ZURBFundation/css/foundation.css" rel="stylesheet" type="text/css"/>
        <script src="ZURBFundation/js/vendor/jquery.js" type="text/javascript"></script>





     <script>
                //Detctor shows a warning if the current browser do not support WebGL.
                var renderer = new THREE.WebGLRenderer();
                if (renderer.isWebGLAvailable()===true) {
                    // Initiate function or other initializations here
                    animate();
                } else {
                    var warning = renderer.getWebGLErrorMessage();
                    document.getElementById('container').appendChild(warning);
                }

</script>

javascript netbeans three.js webgl

Answer 1

Answer №1

Take a closer look at the order of your <script> tags and understand their functions individually.

The first script is
```
<script src="index.js" type="text/javascript"></script>
```
, but its purpose is unclear. Is this script dependent on Three.js? If so, ensure that it is loaded after Three.js to prevent any issues.
Next, you are attempting to import the Three.js library from
```
threejs-viewer-master/lib/threejs/three.js
```
. Verify if this address is correct by checking your console or network tab for loading status.
Furthermore, there seems to be a redundant load of Three.js library from
```
https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js
```
. This may cause conflicts and impact functionality. Consider upgrading to a newer version like /r100/ instead of /r79/.

This issue stems from script organization and potential incorrect file links rather than a problem with Three.js itself.

Answer 2

Take a closer look at the order of your <script> tags and understand their functions individually.

The first script is
```
<script src="index.js" type="text/javascript"></script>
```
, but its purpose is unclear. Is this script dependent on Three.js? If so, ensure that it is loaded after Three.js to prevent any issues.
Next, you are attempting to import the Three.js library from
```
threejs-viewer-master/lib/threejs/three.js
```
. Verify if this address is correct by checking your console or network tab for loading status.
Furthermore, there seems to be a redundant load of Three.js library from
```
https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js
```
. This may cause conflicts and impact functionality. Consider upgrading to a newer version like /r100/ instead of /r79/.

This issue stems from script organization and potential incorrect file links rather than a problem with Three.js itself.

Answer 3

Answer №2

Do remember to start with Three.js.

    <title>3D Visual Analysis Tool</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" href="#" />
<link href="index.css" rel="stylesheet" type="text/css"/>
<script src="index.js" type="text/javascript"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js"></script>
<script src="threejs-viewer-master/lib/threejs/three.js" type="text/javascript"></script>

<!-- links to create a new anchor-->
<script src="threejs-viewer-master/lib/threejs/Detector.js" type="text/javascript"></script>
<script src="threejs-viewer-master/lib/threejs/MTLLoader.js" type="text/javascript"></script>
<script src="threejs-viewer-master/lib/threejs/OBJLoader.js" type="text/javascript"></script>
<script src="threejs-viewer-master/lib/threejs/OrbitControls.js" type="text/javascript"></script>

<!-- ZURBFundation links-->
<link href="ZURBF

undation/css/foundation.css" rel="stylesheet" type="text/css"/>

</head>
<body>
    <div id="div1">
        <div id="upperDiv">
            <h1 id="varhead">3D Visual Analysis Tool</h1>

            <div id="buttonsDiv" >
                <!-- Button to get send a request to the server and get the coordinates as answer and draws them-->
                <button id="butLoad" class = "secondary button" onclick="onButtonLadeClick" >Load Data</button>
                <!-- Button to set the AvarageHigh visible form the server-->
                <button id="setAvarageHighVisible"  class="button secondary"  onclick=""> Show Average Height</button>
                <!-- Button to show reach of anchor-->
                <button id="anchorReach" class="button secondary" onclick="">Anchor Range  
                </button> 
            </div>
        </div>
    </div>
    <!--show Fullscreen-->
    <div id="fullscreen">
        <a id="fullscr"> Fullscreen</a>
    </div>
    <!--canvas div-->
    <div id="drawingSpace" align="center" > </div>
    <!--show no Fullscreen-->
    <div id="noFullscreen">
        <a id="noFullscr">No Fullscreen</a>
    </div>
    <script>
        //Detector displays a warning if the current browser does not support WebGL.
        var renderer = new THREE.WebGLRenderer();
        if (renderer.isWebGLAvailable()) {
            // Initialize function or other initializations here
            animate();
        } else {
            var warning = renderer.getWebGLErrorMessage();
            document.getElementById('container').appendChild(warning);
        }



        //renderer = new THREE.WebGLRenderer();
        controls = new THREE.OrbitControls(camera, renderer.domElement);
        render();
        function render() {
            //Renderer -> because nothing has been rendered onto the canvas yet
            renderer.setPixelRatio(window.devicePixelRatio);
            renderer.setSize(CANVAS_WIDTH, CANVAS_HEIGHT);
            container.appendChild(renderer.domElement);

        }
        animate();

        function animate() {
            // Display in browser
            requestAnimationFrame(animate); //browser has to request the function animate
            renderer.render(scene, camera);

        }



            render();


        }

    </script>
</body>

Answer 4

Do remember to start with Three.js.

    <title>3D Visual Analysis Tool</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" href="#" />
<link href="index.css" rel="stylesheet" type="text/css"/>
<script src="index.js" type="text/javascript"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js"></script>
<script src="threejs-viewer-master/lib/threejs/three.js" type="text/javascript"></script>

<!-- links to create a new anchor-->
<script src="threejs-viewer-master/lib/threejs/Detector.js" type="text/javascript"></script>
<script src="threejs-viewer-master/lib/threejs/MTLLoader.js" type="text/javascript"></script>
<script src="threejs-viewer-master/lib/threejs/OBJLoader.js" type="text/javascript"></script>
<script src="threejs-viewer-master/lib/threejs/OrbitControls.js" type="text/javascript"></script>

<!-- ZURBFundation links-->
<link href="ZURBF

undation/css/foundation.css" rel="stylesheet" type="text/css"/>

</head>
<body>
    <div id="div1">
        <div id="upperDiv">
            <h1 id="varhead">3D Visual Analysis Tool</h1>

            <div id="buttonsDiv" >
                <!-- Button to get send a request to the server and get the coordinates as answer and draws them-->
                <button id="butLoad" class = "secondary button" onclick="onButtonLadeClick" >Load Data</button>
                <!-- Button to set the AvarageHigh visible form the server-->
                <button id="setAvarageHighVisible"  class="button secondary"  onclick=""> Show Average Height</button>
                <!-- Button to show reach of anchor-->
                <button id="anchorReach" class="button secondary" onclick="">Anchor Range  
                </button> 
            </div>
        </div>
    </div>
    <!--show Fullscreen-->
    <div id="fullscreen">
        <a id="fullscr"> Fullscreen</a>
    </div>
    <!--canvas div-->
    <div id="drawingSpace" align="center" > </div>
    <!--show no Fullscreen-->
    <div id="noFullscreen">
        <a id="noFullscr">No Fullscreen</a>
    </div>
    <script>
        //Detector displays a warning if the current browser does not support WebGL.
        var renderer = new THREE.WebGLRenderer();
        if (renderer.isWebGLAvailable()) {
            // Initialize function or other initializations here
            animate();
        } else {
            var warning = renderer.getWebGLErrorMessage();
            document.getElementById('container').appendChild(warning);
        }



        //renderer = new THREE.WebGLRenderer();
        controls = new THREE.OrbitControls(camera, renderer.domElement);
        render();
        function render() {
            //Renderer -> because nothing has been rendered onto the canvas yet
            renderer.setPixelRatio(window.devicePixelRatio);
            renderer.setSize(CANVAS_WIDTH, CANVAS_HEIGHT);
            container.appendChild(renderer.domElement);

        }
        animate();

        function animate() {
            // Display in browser
            requestAnimationFrame(animate); //browser has to request the function animate
            renderer.render(scene, camera);

        }



            render();


        }

    </script>
</body>

The method renderer.isWebGLAvailable is undefined in the current context, referenced at filename.html

Answer №1

Answer №2

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