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๐Ÿ“„ Expressions and Operators

1. What is the difference between == and === ?โ€‹

ๅ…ฉ่€…้ƒฝๆ˜ฏๆฏ”่ผƒ้‹็ฎ—็ฌฆ่™Ÿ๏ผŒ== ๆ˜ฏๆฏ”่ผƒๅ…ฉๅ€‹ๅ€ผๆ˜ฏๅฆ็›ธ็ญ‰๏ผŒ=== ๆ˜ฏๆฏ”่ผƒๅ…ฉๅ€‹ๅ€ผๆ˜ฏๅฆ็›ธ็ญ‰ไธ”ๅž‹ๅˆฅไนŸ็›ธ็ญ‰ใ€‚ๅ› ๆญคๅพŒ่€…ไนŸๅฏไปฅ่ฆ–็‚บๅšดๆ ผๆจกๅผใ€‚

ๅ…ถไธญๅ‰่€…ๅ—้™ๆ–ผ JavaScript ็š„่จญ่จˆ๏ผŒๆœƒ่‡ชๅ‹•่ฝ‰ๆ›้กžๅž‹๏ผŒๅฐŽ่‡ดๅ‡บ็พๅพˆๅคšไธ็›ด่ฆบ็š„็ตๆžœ๏ผŒไพ‹ๅฆ‚๏ผš

1 == '1'; // true
1 == [1]; // true
1 == true; // true
0 == ''; // true
0 == '0'; // true
0 == false; // true

้€™ๅฐ้–‹็™ผ่€…ไพ†่ชช๏ผŒๆ˜ฏๅพˆๅคง็š„ๅฟƒๆ™บ่ฒ ๆ“”๏ผŒๅ› ๆญคๆ™ฎ้ๅปบ่ญฐไฝฟ็”จ === ไพ†ๅ–ไปฃ ==๏ผŒ้ฟๅ…้ ๆœŸๅค–็š„้Œฏ่ชคใ€‚