2020-11-20 15:20:23 +01:00
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>Example - Service worker for caching images</title>
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<link rel="stylesheet" type="text/css" href="/css/materialize.css"/>
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</head>
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<body>
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<!-- Div which will hold the Output -->
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<div id="main" class="container">
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<h3>Service worker for caching image - Modified - Modified</h3>
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<div class="row">
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<div class="col s12 m4">
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<img src="/imgs/180295.jpg" style="display:block;width:100%; height: auto; margin-bottom: 10px" />
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</div>
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<div class="col s12 m4">
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<img src="/imgs/180343.jpg" style="display:block;width:100%; height: auto; margin-bottom: 10px" />
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</div>
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<div class="col s12 m4">
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<img src="/imgs/180401.jpg" style="display:block;width:100%; height: auto; margin-bottom: 10px" />
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</div>
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<div class="col s12 m4">
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<img src="/imgs/1920x1200-Linux Widescreen705729403.jpg" style="display:block;width:100%; height: auto; margin-bottom: 10px" />
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</div>
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<div class="col s12 m4">
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<img src="/imgs/2551508.jpg" style="display:block;width:100%; height: auto; margin-bottom: 10px" />
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</div>
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2020-11-23 13:27:17 +01:00
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<div class="col s12 m4">
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<img src="/imgs/vj73avvswvg11.png" style="display:block;width:100%; height: auto; margin-bottom: 10px" />
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</div>
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2020-11-20 15:20:23 +01:00
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</div>
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</div>
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<script type="text/javascript">
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/***
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***
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***
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First of all: we need to register service worker
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- The first line performs a feature detection test to make sure service workers are supported before trying to register one
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NOTE:
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A single service worker can control many pages. Each time a page within your scope is loaded,
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the service worker is installed against that page and operates on it.
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Bear in mind therefore that you need to be careful with global variables in the service worker script: each page doesn’t get its own unique worker.
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- "scope" param specifies the subset of content controlled by worker.
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***
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***
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*/
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if ('serviceWorker' in navigator) {
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2020-11-27 12:04:09 +01:00
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navigator.serviceWorker.register('/cachersw.js', {scope: '/'})
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2020-11-20 15:20:23 +01:00
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.then((reg) => {
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// registration worked
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console.log('Registration succeeded. Scope is ' + reg.scope);
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}).catch((error) => {
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// registration failed
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console.log('Registration failed with ' + error);
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});
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}
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</script>
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</body>
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</html>
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