blog.katsuma.tvJavaScriptã§FirefoxãŒconst(定数宣言)をサãƒãƒ¼ãƒˆã—ã¦ã„ã‚‹ã“ã¨ã‚’フã¨æ€ã„出ã—ã¾ã—ãŸã€‚ã§ã€å®šæ•°å®£è¨€ã£ã¦é€Ÿåº¦å‘上ã¨ã‹ã«ã¤ãªãŒã‚‹ã®ã‹ãªï¼Ÿæ€ã£ã¦ã¤ã„カッã¨ãªã£ã¦ãƒ™ãƒ³ãƒãƒžãƒ¼ã‚¯ã¨ã‚‹ã‚³ãƒ¼ãƒ‰ã‚’ã‹ã„ã¦ã¿ã¾ã—ãŸã€‚ã“ã‚“ãªæ„Ÿã˜ã€‚ <html> <head><title>const test</title></head> <body> <script> window.load = monitor(); function monitor(){ var A = "TestA"; const B = "TestB"; var Klass = { C : "TestC" }; // 1st test var start = new Date(); for(var i=0; i<10000000; i++){ var b = A; } var end = new Date(); console.log("
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