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Loader JS Dynamic Loading
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <meta http-equiv="X-UA-Compatible" content="ie=edge"> | |
| <title>Index</title> | |
| </head> | |
| <body> | |
| <div id="ROOT"></div> | |
| <script> | |
| (function(window){ | |
| const ready = (test, fn) => { | |
| const result = test(); | |
| if(!result) { | |
| setTimeout(() => ready(test, fn), 1); | |
| } | |
| else { | |
| fn(result); | |
| } | |
| } | |
| const __loader = (registry = {}, loading = {}) => (fn, ...items) => { | |
| items.forEach(item => { | |
| if(typeof loading[item] === 'undefined') { | |
| loading[item] = true; | |
| import(`./${item}.js`).then(module => { | |
| registry[item] = module; | |
| }) | |
| } | |
| }); | |
| ready( | |
| () => items.every(item => !!registry[item]) ? registry : null, | |
| (registry) => fn(registry) | |
| ) | |
| } | |
| window.__loader = __loader; | |
| })(window); | |
| (function(window){ | |
| window.loader = __loader(); | |
| })(window); | |
| (function(loader) { | |
| loader((r) => { | |
| console.log(r.test.hello()) | |
| console.log(r.test1.hello()) | |
| }, 'test', 'test1') | |
| })(window.loader); | |
| </script> | |
| </body> | |
| </html> |
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