Created
March 17, 2018 00:44
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Memory Leak Example
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| <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> | |
| <html lang="en"> | |
| <head> | |
| </head> | |
| <body> | |
| <button id="test">Click me!</button> | |
| <button id="replace-button">Replace Click me!</button> | |
| </body> | |
| <script> | |
| { | |
| let clickMeButton = document.getElementById("test"); | |
| clickMeButton.onclick = () => { | |
| console.log("Clicked"); | |
| let {longString = ""} = clickMeButton; | |
| longString += new Array(32 * 1024 * 1024 + 1).join("x"); | |
| clickMeButton.longString = longString; | |
| clickMeButton.textContent = `Now holds ${(longString.length / 1024 / 1024).toFixed(1)} MiB` | |
| console.log(replaceButton.textContent); | |
| }; | |
| const replaceButton = document.getElementById("replace-button"); | |
| replaceButton.onclick = () => { | |
| const textNode = document.createTextNode("Button Replaced"); | |
| document.body.replaceChild(textNode, clickMeButton); | |
| // Uncomment to fix leak: | |
| // clickMeButton = null; | |
| } | |
| } | |
| </script> | |
| </html> |
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