\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/ \u52a0\u6cd5\u8fd0\u7b97console.log(30 === a + b);\/\/ \u51cf\u6cd5\u8fd0\u7b97console.log(-10 === a - b);\/\/ \u4e58\u6cd5\u8fd0\u7b97console.log(200 === a * b);\/\/ \u9664\u6cd5\u8fd0\u7b97console.log(0.5 === a \/ b);\/\/ \u53d6\u4f59\u8fd0\u7b97console.log(10 === a % b);<\/pre>\n\u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u52a0\u6cd5\u8fd0\u7b97\uff08+\uff09\u4e5f\u53ef\u4ee5\u7528\u4f5c\u5b57\u7b26\u4e32\u7684\u62fc\u63a5\u3002<\/p>\n<\/li>\n<\/ul>\n
var a = '.w' , b = 'xs';\/\/ \u5b57\u7b26\u4e32\u62fc\u63a5console.log('.wxs' === a + b);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e00\u5143\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/ \u81ea\u589e\u8fd0\u7b97console.log(10 === a++);console.log(12 === ++a);\/\/ \u81ea\u51cf\u8fd0\u7b97console.log(12 === a--);console.log(10 === --a);\/\/ \u6b63\u503c\u8fd0\u7b97console.log(10 === +a);\/\/ \u8d1f\u503c\u8fd0\u7b97console.log(0-10 === -a);\/\/ \u5426\u8fd0\u7b97console.log(-11 === ~a);\/\/ \u53d6\u53cd\u8fd0\u7b97console.log(false === !a);\/\/ delete \u8fd0\u7b97console.log(true === delete a.fake);\/\/ void \u8fd0\u7b97console.log(undefined === void a);\/\/ typeof \u8fd0\u7b97console.log(\"number\" === typeof a);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4f4d\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/ \u5de6\u79fb\u8fd0\u7b97console.log(80 === (a > 2));\/\/ \u5e26\u7b26\u53f7\u53f3\u79fb\u8fd0\u7b97console.log(2 === (a >>> 2));\/\/ \u4e0e\u8fd0\u7b97console.log(2 === (a & 3));\/\/ \u5f02\u6216\u8fd0\u7b97console.log(9 === (a ^ 3));\/\/ \u6216\u8fd0\u7b97console.log(11 === (a | 3));<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/ \u5c0f\u4e8econsole.log(true === (a b));\/\/ \u5c0f\u4e8e\u7b49\u4e8econsole.log(true === (a = b));<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u7b49\u503c\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/ \u7b49\u53f7console.log(false === (a == b));\/\/ \u975e\u7b49\u53f7console.log(true === (a != b));\/\/ \u5168\u7b49\u53f7console.log(false === (a === b));\/\/ \u975e\u5168\u7b49\u53f7console.log(true === (a !== b));<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8d4b\u503c\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10;\na = 10; a *= 10;console.log(100 === a);\na = 10; a \/= 5;console.log(2 === a);\na = 10; a %= 7;console.log(3 === a);\na = 10; a += 5;console.log(15 === a);\na = 10; a -= 11;console.log(-1 === a);\na = 10; a >= 2;console.log(2 === a);\na = 10; a >>>= 2;console.log(2 === a);\na = 10; a &= 3;console.log(2 === a);\na = 10; a ^= 3;console.log(9 === a);\na = 10; a |= 3;console.log(11 === a);<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4e8c\u5143\u903b\u8f91\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/ \u903b\u8f91\u4e0econsole.log(20 === (a && b));\/\/ \u903b\u8f91\u6216console.log(10 === (a || b));<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5176\u4ed6\u8fd0\u7b97\u7b26<\/h2>\n
\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
var a = 10, b = 20;\/\/\u6761\u4ef6\u8fd0\u7b97\u7b26console.log(20 === (a >= 10 ? a + 10 : b + 10));\/\/\u9017\u53f7\u8fd0\u7b97\u7b26console.log(20 === (a, b));<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7<\/h2>\n
| \u4f18\u5148\u7ea7<\/th>\n | \u8fd0\u7b97\u7b26<\/th>\n | \u8bf4\u660e<\/th>\n | \u7ed3\u5408\u6027<\/th>\n<\/tr>\n<\/thead>\n |
|---|---|---|---|
| 20<\/td>\n | ( … )<\/td>\n | \u62ec\u53f7<\/td>\n | n\/a<\/td>\n<\/tr>\n |
| 19<\/td>\n | … . …<\/td>\n | \u6210\u5458\u8bbf\u95ee<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … [ … ]<\/td>\n | \u6210\u5458\u8bbf\u95ee<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … ( … )<\/td>\n | \u51fd\u6570\u8c03\u7528<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 17<\/td>\n | … ++<\/td>\n | \u540e\u7f6e\u9012\u589e<\/td>\n | n\/a<\/td>\n<\/tr>\n |
| <\/td>\n | … —<\/td>\n | \u540e\u7f6e\u9012\u51cf<\/td>\n | n\/a<\/td>\n<\/tr>\n |
| 16<\/td>\n | ! …<\/td>\n | \u903b\u8f91\u975e<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | ~ …<\/td>\n | \u6309\u4f4d\u975e<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | + …<\/td>\n | \u4e00\u5143\u52a0\u6cd5<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | – …<\/td>\n | \u4e00\u5143\u51cf\u6cd5<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | ++ …<\/td>\n | \u524d\u7f6e\u9012\u589e<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | — …<\/td>\n | \u524d\u7f6e\u9012\u51cf<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | typeof …<\/td>\n | typeof<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | void …<\/td>\n | void<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | delete …<\/td>\n | delete<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| 14<\/td>\n | … * …<\/td>\n | \u4e58\u6cd5<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … \/ …<\/td>\n | \u9664\u6cd5<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … % …<\/td>\n | \u53d6\u6a21<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 13<\/td>\n | … + …<\/td>\n | \u52a0\u6cd5<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … – …<\/td>\n | \u51cf\u6cd5<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 12<\/td>\n | … <\/td>\n | \u6309\u4f4d\u5de6\u79fb<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … >> …<\/td>\n | \u6309\u4f4d\u53f3\u79fb<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … >>> …<\/td>\n | \u65e0\u7b26\u53f7\u53f3\u79fb<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 11<\/td>\n | … <\/td>\n | \u5c0f\u4e8e<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … <\/td>\n | \u5c0f\u4e8e\u7b49\u4e8e<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … > …<\/td>\n | \u5927\u4e8e<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … >= …<\/td>\n | \u5927\u4e8e\u7b49\u4e8e<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 10<\/td>\n | … == …<\/td>\n | \u7b49\u53f7<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … != …<\/td>\n | \u975e\u7b49\u53f7<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … === …<\/td>\n | \u5168\u7b49\u53f7<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| <\/td>\n | … !== …<\/td>\n | \u975e\u5168\u7b49\u53f7<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 9<\/td>\n | … & …<\/td>\n | \u6309\u4f4d\u4e0e<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 8<\/td>\n | … ^ …<\/td>\n | \u6309\u4f4d\u5f02\u6216<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 7<\/td>\n | … \uff5c …<\/td>\n | \u6309\u4f4d\u6216<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 6<\/td>\n | … && …<\/td>\n | \u903b\u8f91\u4e0e<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 5<\/td>\n | … \uff5c\uff5c …<\/td>\n | \u903b\u8f91\u6216<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n |
| 4<\/td>\n | … ? … : …<\/td>\n | \u6761\u4ef6\u8fd0\u7b97\u7b26<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| 3<\/td>\n | … = …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … += …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … -= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … *= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … \/= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … %= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … <\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … >>= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … >>>= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … &= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … ^= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| <\/td>\n | … \uff5c= …<\/td>\n | \u8d4b\u503c<\/td>\n | \u4ece\u53f3\u5230\u5de6<\/td>\n<\/tr>\n |
| 0<\/td>\n | … , …<\/td>\n | \u9017\u53f7<\/td>\n | \u4ece\u5de6\u5230\u53f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u76f8\u4fe1\u770b\u4e86\u672c\u6587\u6848\u4f8b\u4f60\u5df2\u7ecf\u638c\u63e1\u4e86\u65b9\u6cd5\uff0c\u66f4\u591a\u7cbe\u5f69\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n \u63a8\u8350\u9605\u8bfb\uff1a<\/p>\n \u5c0f\u7a0b\u5e8f\u5f00\u53d1\u4e2d\u600e\u6837\u5b9e\u73b0Android\u73af\u5883\u4e0b\u7684\u6a2a\u5411\u6eda\u52a8<\/p>\n \u4ee5\u4e0a\u5c31\u662f\u5c0f\u7a0b\u5e8f\u5185\u5e38\u7528\u7684\u8fd0\u7b97\u7b26\u6709\u54ea\u4e9b\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":" \u57fa\u672c\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/ \u52a0\u6cd5\u8fd0\u7b97console.log(30 === a + b);\/\/ \u51cf\u6cd5\u8fd0\u7b97console.log(-10 === a – b);\/\/ \u4e58\u6cd5\u8fd0\u7b97console.log(200 === a * b);\/\/ \u9664\u6cd5\u8fd0\u7b97console.log(0.5 === a \/ b);\/\/ \u53d6\u4f59\u8fd0\u7b97console.log(10 === a % b); \u767b\u5f55\u540e\u590d\u5236 \u52a0\u6cd5\u8fd0\u7b97\uff08+\uff09\u4e5f\u53ef\u4ee5\u7528\u4f5c\u5b57\u7b26\u4e32\u7684\u62fc\u63a5\u3002 var a = ‘.w’ , b = ‘xs’;\/\/ \u5b57\u7b26\u4e32\u62fc\u63a5console.log(‘.wxs’ === a + b); \u767b\u5f55\u540e\u590d\u5236 \u4e00\u5143\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/ \u81ea\u589e\u8fd0\u7b97console.log(10 === a++);console.log(12 === ++a);\/\/ \u81ea\u51cf\u8fd0\u7b97console.log(12 === a–);console.log(10 === –a);\/\/ \u6b63\u503c\u8fd0\u7b97console.log(10 === +a);\/\/ \u8d1f\u503c\u8fd0\u7b97console.log(0-10 === -a);\/\/ \u5426\u8fd0\u7b97console.log(-11 === ~a);\/\/ \u53d6\u53cd\u8fd0\u7b97console.log(false === !a);\/\/ delete \u8fd0\u7b97console.log(true === delete a.fake);\/\/ void \u8fd0\u7b97console.log(undefined === void a);\/\/ typeof \u8fd0\u7b97console.log(“number” === typeof a); \u767b\u5f55\u540e\u590d\u5236 \u4f4d\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/ \u5de6\u79fb\u8fd0\u7b97console.log(80 === (a > 2));\/\/ \u5e26\u7b26\u53f7\u53f3\u79fb\u8fd0\u7b97console.log(2 === (a >>> 2));\/\/ \u4e0e\u8fd0\u7b97console.log(2 === (a & 3));\/\/ \u5f02\u6216\u8fd0\u7b97console.log(9 === (a ^ 3));\/\/ \u6216\u8fd0\u7b97console.log(11 === (a | 3)); \u767b\u5f55\u540e\u590d\u5236 \u6bd4\u8f83\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/ \u5c0f\u4e8econsole.log(true === (a b));\/\/ \u5c0f\u4e8e\u7b49\u4e8econsole.log(true === (a = b)); \u767b\u5f55\u540e\u590d\u5236 \u7b49\u503c\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/ \u7b49\u53f7console.log(false === (a == b));\/\/ \u975e\u7b49\u53f7console.log(true === (a != b));\/\/ \u5168\u7b49\u53f7console.log(false === (a === b));\/\/ \u975e\u5168\u7b49\u53f7console.log(true === (a !== b)); \u767b\u5f55\u540e\u590d\u5236 \u8d4b\u503c\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10; a = 10; a *= 10;console.log(100 === a); a = 10; a \/= 5;console.log(2 === a); a = 10; a %= 7;console.log(3 === a); a = 10; a += 5;console.log(15 === a); a = 10; a -= 11;console.log(-1 === a); a = 10; a >= 2;console.log(2 === a); a = 10; a >>>= 2;console.log(2 === a); a = 10; a &= 3;console.log(2 === a); a = 10; a ^= 3;console.log(9 === a); a = 10; a |= 3;console.log(11 === a); \u767b\u5f55\u540e\u590d\u5236 \u4e8c\u5143\u903b\u8f91\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/ \u903b\u8f91\u4e0econsole.log(20 === (a && b));\/\/ \u903b\u8f91\u6216console.log(10 === (a || b)); \u767b\u5f55\u540e\u590d\u5236 \u5176\u4ed6\u8fd0\u7b97\u7b26 \u793a\u4f8b\u4ee3\u7801\uff1a var a = 10, b = 20;\/\/\u6761\u4ef6\u8fd0\u7b97\u7b26console.log(20 === (a >= 10 ? a + 10 : b + 10));\/\/\u9017\u53f7\u8fd0\u7b97\u7b26console.log(20 === (a, b)); \u767b\u5f55\u540e\u590d\u5236 \u8fd0\u7b97\u7b26\u4f18\u5148\u7ea7 \u4f18\u5148\u7ea7 \u8fd0\u7b97\u7b26 \u8bf4\u660e \u7ed3\u5408\u6027 20 ( … ) \u62ec\u53f7 n\/a 19 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-31588","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/31588","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=31588"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/31588\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=31588"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=31588"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=31588"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |