Created
March 2, 2019 09:39
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Simple HTML Console library
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| (function (global) { | |
| var output = null; | |
| var buffer = []; | |
| var target; | |
| function log(msg) { | |
| if (!output) { | |
| buffer.push(msg); | |
| return; | |
| } | |
| var pre = document.createElement('pre'); | |
| pre.textContent = msg; | |
| output.appendChild(pre); | |
| } | |
| if (global.htmlConsole) { | |
| target = global.htmlConsole.target; | |
| } | |
| if (!target) { | |
| target = "#console"; | |
| } else if (typeof target.appendChild == 'function') { | |
| output = target; | |
| } | |
| if (!output) document.addEventListener("DOMContentLoaded", function(){ | |
| output = document.querySelector(target); | |
| if (!output) throw new Error('No element found for console using query "' + target + '".') | |
| buffer.map(log); | |
| buffer.length = 0; | |
| }); | |
| global.htmlConsole = global.htmlConsole || {}; | |
| global.htmlConsole.log = log; | |
| }(this)); |
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| <!doctype html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>Simple HTML Console example</title> | |
| <meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1"> | |
| <script src="./html-console.js"></script> | |
| <script> | |
| htmlConsole.log('Hello from page'); | |
| setTimeout(() => htmlConsole.log('Delayed message'), 1000); | |
| </script> | |
| </head> | |
| <body> | |
| <div id="console"></div> | |
| </body> | |
| </html> |
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