{"id":29,"date":"2024-02-23T20:13:47","date_gmt":"2024-01-20T05:24:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%9c%a8javascript%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%bd%8d%e8%bf%90%e7%ae%97%e7%ac%a6\/"},"modified":"2025-07-31T21:34:43","modified_gmt":"2025-07-31T13:34:43","slug":"%e5%9c%a8javascript%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%bd%8d%e8%bf%90%e7%ae%97%e7%ac%a6","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%9c%a8javascript%e4%b8%ad%e4%bd%bf%e7%94%a8%e4%bd%8d%e8%bf%90%e7%ae%97%e7%ac%a6\/","title":{"rendered":"JavaScript\u4f4d\u8fd0\u7b97\u7b26\uff1a\u6df1\u5165\u7406\u89e3\u4e0e\u9ad8\u6548\u5e94\u7528"},"content":{"rendered":"<h3>\u7b80\u4ecb<\/h3>\n<p>\u5c3d\u7ba1JavaScript\u4e2d\u7684\u4f4d\u8fd0\u7b97\u7b26\u9c9c\u5c11\u53d7\u5230\u5173\u6ce8\uff0c\u4f46\u5b83\u4eec\u5b9e\u9645\u4e0a\u529f\u80fd\u5f3a\u5927\u4e14\u7528\u9014\u5e7f\u6cdb\u3002\u4f4d\u8fd0\u7b97\u7b26\u53ef\u7528\u4e8e\u66f4\u5feb\u901f\u7684\u6570\u503c\u8ba1\u7b97\u548c\u8f6c\u6362\uff0c\u751a\u81f3\u80fd\u66ff\u4ee3\u67d0\u4e9b\u590d\u6742\u7684\u7f16\u7801\u573a\u666f\uff0c\u4ece\u800c\u4f7f\u4ee3\u7801\u66f4\u6613\u8bfb\u3002<\/p>\n<p>\u901a\u8fc7\u672c\u6559\u7a0b\u7684\u5b66\u4e60\uff0c\u60a8\u5c06\u5bf9\u4f4d\u8fd0\u7b97\u7b26\u6709\u4e00\u4e2a\u57fa\u672c\u7684\u7406\u89e3\uff0c\u5305\u62ec\u5b83\u4eec\u662f\u4ec0\u4e48\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u4eec\u3002<\/p>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<p>\u5728\u5f00\u59cb\u9605\u8bfb\u672c\u6307\u5357\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5177\u5907\u4ee5\u4e0b\u77e5\u8bc6\uff1a<\/p>\n<h3>\u6982\u5ff5\u524d\u63d0<\/h3>\n<ul class=\"post-ul\">\n<li>\u5bf9\u4e8c\u8fdb\u5236\u6709\u975e\u5e38\u57fa\u672c\u7684\u7406\u89e3\u3002<\/li>\n<li>\u4e86\u89e3\u903b\u8f91\u201c\u4e0e\u201d\uff08AND\uff09\u548c\u201c\u6216\u201d\uff08OR\uff09\u8fd0\u7b97\u7b26\u7684\u5de5\u4f5c\u539f\u7406\u53ca\u5176\u7ed3\u679c\u3002<\/li>\n<li>\u7406\u89e3\u8fd0\u7b97\u7b26\u548c\u64cd\u4f5c\u6570\u3002<\/li>\n<\/ul>\n<h3>\u6280\u672f\u5148\u51b3\u6761\u4ef6<\/h3>\n<ul class=\"post-ul\">\n<li><a href=\"https:\/\/www.digitalocean.com\/community\/tutorials\/how-to-use-the-javascript-developer-console\">\u5982\u4f55\u4f7f\u7528JavaScript\u5f00\u53d1\u8005\u63a7\u5236\u53f0<\/a><\/li>\n<li><a href=\"https:\/\/www.digitalocean.com\/community\/tutorial_series\/how-to-code-in-javascript\">\u5982\u4f55\u4f7f\u7528JavaScript\u7f16\u7a0b<\/a><\/li>\n<\/ul>\n<h2>JavaScript\u4e2d\u4e8c\u8fdb\u5236\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>\u7531\u4e8e\u4f4d\u8fd0\u7b97\u7b26\u5728\u4e8c\u8fdb\u5236\u5c42\u9762\u5de5\u4f5c\uff0c\u56e0\u6b64\u7406\u89e3JavaScript\u5982\u4f55\u8fdb\u884c\u4e8c\u8fdb\u5236\u8f6c\u6362\u81f3\u5173\u91cd\u8981\u3002\u76f8\u4fe1\u6211\uff0c\u8fd9\u6bd4\u542c\u8d77\u6765\u8981\u7b80\u5355\u5f97\u591a\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>toString()<\/code>\u51fd\u6570\u5c06\u4efb\u4f55\u6570\u5b57\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">var<\/span> n <span class=\"token operator\">=<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span>\r\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>n<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>2\r\n<\/code><\/pre>\n<p><code>toString<\/code>\u51fd\u6570\u6709\u4e00\u4e2a\u53c2\u6570\uff08\u79f0\u4e3a\u57fa\u6570\uff09\uff0c\u53ef\u7528\u4e8e\u6307\u5b9a\u8fdb\u5236\u3002\u57fa\u6570\u51b3\u5b9a\u4e86\u76ee\u6807\u8f6c\u6362\u3002\u60a8\u53ef\u4ee5\u4f20\u5165\u201c2\u201d\u6765\u83b7\u53d6\u4e8c\u8fdb\u5236\uff0c\u4f20\u5165\u201c8\u201d\u6765\u83b7\u53d6\u516b\u8fdb\u5236\uff0c\u4f20\u5165\u201c16\u201d\u6765\u83b7\u53d6\u88ab\u8f6c\u6362\u6570\u5b57\u7684\u5341\u516d\u8fdb\u5236\u503c\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u57fa\u6570\u4e3a10\uff0c\u56e0\u6b64\u8fd4\u56de\u5341\u8fdb\u5236\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">var<\/span> num <span class=\"token operator\">=<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">var<\/span> binaryText <span class=\"token operator\">=<\/span> num<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>binaryText<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>10010\r\n<\/code><\/pre>\n<p>\u6b63\u5982\u6211\u4eec\u6240\u89c1\uff0c\u6570\u5b5718\u88ab\u8f6c\u6362\u6210\u4e86\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u2014\u201410010\u3002<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f<\/p>\n<div>\n<p>\u63d0\u793a\uff1a\u8981\u8fdb\u884c\u53cd\u5411\u8f6c\u6362\uff08\u4ece\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u83b7\u53d6\u6570\u5b57\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<code>parseInt(\"binary_string\", 2)<\/code>\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u8981\u5c06\u201c10010\u201d\u8f6c\u6362\u4e3a\u6570\u5b5718\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"token keyword\">var<\/span> num <span class=\"token operator\">=<\/span> <span class=\"token number\">18<\/span><span class=\"token punctuation\">;<\/span>\r\n<span class=\"token keyword\">var<\/span> binaryText <span class=\"token operator\">=<\/span> num<span class=\"token punctuation\">.<\/span><span class=\"token function\">toString<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span>binaryText<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\nconsole<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">parseInt<\/span><span class=\"token punctuation\">(<\/span>binaryText<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><div class=\"secondary-code-label\" title=\"Output\">\u8f93\u51fa<\/div>10010\r\n18\r\n<\/code><\/pre>\n<\/div>\n<\/div>\n<p>\u8fd9\u6db5\u76d6\u4e86JavaScript\u4e2d\u4e8c\u8fdb\u5236\u8f6c\u6362\u7684\u6700\u57fa\u672c\u77e5\u8bc6\u3002\u6211\u4eec\u53ef\u4ee5\u5728\u4e0d\u5b9e\u9645\u4e86\u89e3\u4e8c\u8fdb\u5236\u8f6c\u6362\u7684\u60c5\u51b5\u4e0b\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26\u3002\u7136\u800c\uff0c\u8fd9\u6837\u53ef\u80fd\u65e0\u6cd5\u7406\u89e3\u4f4d\u8fd0\u7b97\u7b26\u7684\u7ed3\u679c\u662f\u5982\u4f55\u8ba1\u7b97\u7684\u3002\u8ba9\u6211\u4eec\u5b9e\u9645\u770b\u770b\u3002<\/p>\n<h2>\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26<\/h2>\n<p>\u5728\u672c\u6559\u7a0b\u4e2d\uff0c\u6211\u4eec\u8003\u8651\u4f7f\u7528\u57fa\u672c\u6570\u5b57\u8fdb\u884c\u4f4d\u8fd0\u7b97\u3002\u6211\u4eec\u5c06\u4f7f\u7528\u7684\u6570\u5b57\u662f1\u30012\u548c3\u3002\u4ee5\u4e0b\u662f\u5b83\u4eec\u5404\u81ea\u7684\u4e8c\u8fdb\u5236\u8868\u793a\uff1a<\/p>\n<p>1 \u2192 001<\/p>\n<p>2 \u2192 010<\/p>\n<p>3 \u2192 011<\/p>\n<div class=\"post-conf-note\">\n<p class=\"post-note\">\n<p class=\"post-conf-desc\">\u6ce8\u610f<\/p>\n<div>\n<p>\u6ce8\u610f\uff1a\u5b9e\u9645\u7684\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u5c06\u670963\u4e2a0\u548c\u4e00\u4e2a1\u5728\u672b\u5c3e\uff0c\u6784\u621064\u4f4d\u4e8c\u8fdb\u5236\u8868\u793a\u3002\u7136\u800c\uff0c\u4e3a\u4e86\u7b80\u5316\uff0c\u6211\u4eec\u53ea\u53d6\u6700\u540e3\u4f4d\u3002<\/p>\n<\/div>\n<\/div>\n<h2>\u6309\u4f4d\u4e0e (&#038;)<\/h2>\n<p>\u6309\u4f4d\u4e0e\u8fd0\u7b97\u7b26\u53ef\u4ee5\u4f7f\u7528\u7b26\u53f7\u201c&#038;\u201d\u6765\u8868\u793a\uff08\u8bf7\u6ce8\u610f\uff0c\u5bf9\u4e8e\u975e\u4e8c\u8fdb\u5236\u53d8\u91cf\u4e4b\u95f4\u7684\u903b\u8f91\u4e0e\u64cd\u4f5c\uff0c\u6211\u4eec\u4f7f\u7528\u53cc\u201c&#038;&#038;\u201d\uff09\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u201c&#038;\u201d\u5bf9\u4f4d\u8fd4\u56de\u7684\u7ed3\u679c\uff1a<\/p>\n<p>0 &#038; 0 = 0<\/p>\n<p>1 &#038; 0 = 0<\/p>\n<p>1 &#038; 1 = 1<\/p>\n<p>\u8fd9\u4e0e\u6211\u4eec\u7684\u903b\u8f91\u4e0e\u64cd\u4f5c\u975e\u5e38\u76f8\u4f3c\u2014\u2014\u5982\u679c\u4e24\u4e2a\u6761\u4ef6\u90fd\u4e3a\u771f\uff0c\u5219\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u201c\u771f\u201d\u88ab1\u53d6\u4ee3\uff0c\u201c\u5047\u201d\u7b49\u4e8e0\u3002<\/p>\n<p>JavaScript\u901a\u8fc7\u6bd4\u8f83\u6bcf\u4e2a\u4e8c\u8fdb\u5236\u4f4d\u6765\u751f\u6210\u7ed3\u679c\u4e8c\u8fdb\u5236\u6570\u3002\u4e0b\u8868\u663e\u793a\u4e86\u6570\u5b571\u548c3\u4e4b\u95f4\u7684\u6309\u4f4d\u4e0e\u64cd\u4f5c\u3002<\/p>\n<div>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>\u6570\u5b57<\/th>\n<th>\u4e8c\u8fdb\u5236\u7b49\u6548\u503c<\/th>\n<th>\u4e8c\u8fdb\u5236\u4f4d<\/th>\n<th><\/th>\n<th><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>001<\/td>\n<td>0<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>&amp;<\/td>\n<td>&amp;<\/td>\n<td>&amp;<\/td>\n<td>&amp;<\/td>\n<td>&amp;<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>011<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u7ed3\u679c = 1<\/td>\n<td><\/td>\n<td>0 &amp; 0 = 0<\/td>\n<td>0 &amp; 1 = 0<\/td>\n<td>1 &amp; 1 = 1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5982\u679c\u6211\u4eec\u5c06\u7ed3\u679c\u5b57\u7b26\u4e32\u201c001\u201d\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\uff0c\u90a3\u4e48\u6211\u4eec\u5c06\u5f97\u5230\u201c1\u201d\u4f5c\u4e3a\u8f93\u51fa\u3002\u56e0\u6b64\uff0c\u201c1\u201d &amp; \u201c3\u201d\u7684\u7ed3\u679c\u662f\u201c1\u201d\u3002\u5728\u5185\u90e8\uff0cJavaScript\u8bc6\u522b\u4f4d\u8fd0\u7b97\u7b26\uff0c\u5e76\u5c061\u548c3\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\uff0c\u7136\u540e\u5bf9\u6bcf\u4e2a\u4f4d\u5e94\u7528\u6309\u4f4d\u4e0e\u64cd\u4f5c\uff0c\u6700\u540e\u5c06\u7ed3\u679c\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u6309F12\u952e\u5728\u6d4f\u89c8\u5668\u63a7\u5236\u53f0\u4e2d\u5feb\u901f\u5c1d\u8bd5\u6b64\u64cd\u4f5c\uff0c\u7136\u540e\u8f93\u5165\uff1a<\/p>\n<pre class=\"post-pre\"><code>console<span class=\"token punctuation\">.<\/span><span class=\"token function\">log<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token operator\">&amp;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/code><\/pre>\n<\/p><\/div>\n<h2>\u6309\u4f4d\u6216 (|)<\/h2>\n<p>\u6309\u4f4d\u6216\u4f7f\u7528\u5355\u4e2a\u7b26\u53f7\u201c|\u201d\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u201c|\u201d\u5bf9\u4f4d\u8fd4\u56de\u7684\u7ed3\u679c\uff1a<\/p>\n<p>0 | 0 = 0<\/p>\n<p>1 | 0 = 1<\/p>\n<p>1 | 1 = 1<\/p>\n<p>\u8fd9\u7c7b\u4f3c\u4e8e\u903b\u8f91\u6216\u64cd\u4f5c\u2014\u2014\u5982\u679c\u4efb\u4f55\u4e00\u4e2a\u6761\u4ef6\u4e3a\u771f\uff0c\u5219\u8fd4\u56de\u771f\uff0c\u5426\u5219\u8fd4\u56de\u5047\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u771f\u88ab1\u53d6\u4ee3\uff0c0\u7b49\u4e8e\u5047\u3002<\/p>\n<p>\u4e0b\u8868\u663e\u793a\u4e86\u6570\u5b571\u548c3\u4e4b\u95f4\u7684\u6309\u4f4d\u6216\u64cd\u4f5c\uff1a<\/p>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>\u6570\u5b57<\/th>\n<th>\u4e8c\u8fdb\u5236\u7b49\u6548\u503c<\/th>\n<th>\u4e8c\u8fdb\u5236\u4f4d<\/th>\n<th><\/th>\n<th><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>001<\/td>\n<td>0<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>|<\/td>\n<td>|<\/td>\n<td>|<\/td>\n<td>|<\/td>\n<td>|<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>011<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u7ed3\u679c = 3<\/td>\n<td><\/td>\n<td>0 | 0 = 0<\/td>\n<td>0 | 1 = 0<\/td>\n<td>1 | 1 = 1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5982\u679c\u6211\u4eec\u5c06\u7ed3\u679c\u5b57\u7b26\u4e32\u201c011\u201d\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\uff0c\u90a3\u4e48\u6211\u4eec\u5c06\u5f97\u5230\u201c3\u201d\u4f5c\u4e3a\u8f93\u51fa\u3002\u56e0\u6b64\uff0c\u201c1\u201d | \u201c3\u201d\u7684\u7ed3\u679c\u662f\u201c3\u201d\u3002\u5728\u5185\u90e8\uff0cJavaScript\u8bc6\u522b\u4f4d\u8fd0\u7b97\u7b26\uff0c\u5e76\u5c061\u548c3\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\uff0c\u7136\u540e\u5bf9\u6bcf\u4e2a\u4f4d\u5e94\u7528\u6309\u4f4d\u6216\u64cd\u4f5c\uff0c\u6700\u540e\u5c06\u7ed3\u679c\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\u3002<\/p>\n<\/p><\/div>\n<h2>\u6309\u4f4d\u5f02\u6216 (^)<\/h2>\n<p>\u6309\u4f4d\u5f02\u6216\u7684\u7b26\u53f7\u662f\u201c^\u201d\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u201c^\u201d\u5bf9\u4f4d\u8fd4\u56de\u7684\u7ed3\u679c\uff1a<\/p>\n<p>0 ^ 0 = 0<\/p>\n<p>1 ^ 0 = 1<\/p>\n<p>1 ^ 1 = 0<\/p>\n<p>\u5f02\u6216\uff08\u6392\u4ed6\u6216\uff09\u7684\u89c4\u5219\u662f\uff0c\u5982\u679c\u4e24\u4e2a\u4f4d\u4e0d\u540c\uff0c\u5219\u8fd4\u56de\u201c1\u201d\uff0c\u5426\u5219\u8fd4\u56de\u201c0\u201d\u30021\u548c3\u4e4b\u95f4\u7684\u5f02\u6216\u5c06\u8fd4\u56de2\u3002\u4ee5\u4e0b\u662f\u89e3\u91ca\uff1a<\/p>\n<div class=\"post-table\">\n<table>\n<thead>\n<tr>\n<th>\u6570\u5b57<\/th>\n<th>\u4e8c\u8fdb\u5236\u7b49\u6548\u503c<\/th>\n<th>\u4e8c\u8fdb\u5236\u4f4d<\/th>\n<th><\/th>\n<th><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>001<\/td>\n<td>0<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>^<\/td>\n<td>^<\/td>\n<td>^<\/td>\n<td>^<\/td>\n<td>^<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>011<\/td>\n<td>0<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>\u7ed3\u679c = 2<\/td>\n<td><\/td>\n<td>0 ^ 0 = 0<\/td>\n<td>0 ^ 1 = 1<\/td>\n<td>1 ^ 1 = 0<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<h2>\u6309\u4f4d\u5de6\u79fb (&lt;&lt;)<\/h2>\n<h3>\u8bed\u6cd5: \u6570\u5b57 &lt;&lt; \u4f4d\u7f6e<\/h3>\n<p>\u79fb\u4f4d\u8fd0\u7b97\u7b26\u5de6\u4fa7\u7684\u6570\u5b57\u662f\u5b9e\u9645\u7684\u6570\u5b57\uff0c\u8fd0\u7b97\u7b26\u53f3\u4fa7\u7684\u6570\u5b57\u662f\u79fb\u4f4d\u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff0c\u201c5 &lt;&lt; 2\u201d\u544a\u8bc9JavaScript\u5bf9\u6570\u5b575\u6267\u884c\u5411\u5de6\u79fb\u4f4d\u4e24\u4e2a\u4f4d\u7f6e\u7684\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662fJavaScript\u5b9e\u9645\u6267\u884c\u5de6\u79fb\u64cd\u4f5c\u7684\u65b9\u5f0f\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u5b83\u5c06\u6570\u5b57\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u7b49\u6548\u503c\u3002\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u6570\u5b575\u5c06\u88ab\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u5f62\u5f0f\u2014\u2014101\u3002<\/li>\n<li>\u5728\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u7684\u53f3\u4fa7\u6dfb\u52a0\u4e24\u4e2a\u201c00\u201d\u3002\u5bf9\u4e8e\u6570\u5b575\uff0c\u8fd9\u5c06\u5bfc\u81f410100\u3002<\/li>\n<li>\u5c06\u4e8c\u8fdb\u5236\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u6570\u3002\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u5b83\u5c06\u662f20\u3002\u56e0\u6b64\uff0c<code>console.log(5&lt;&lt;2);<\/code> \u5c06\u8fd4\u56de\u6570\u5b5720\u3002<\/li>\n<\/ul>\n<h2>\u6309\u4f4d\u53f3\u79fb (&gt;&gt;)<\/h2>\n<h3>\u8bed\u6cd5: \u6570\u5b57 &gt;&gt; \u4f4d\u7f6e<\/h3>\n<p>\u53f3\u79fb\u8fd0\u7b97\u7b26\u5c06\u4ece\u53f3\u4fa7\u79fb\u9664\u4e8c\u8fdb\u5236\u4f4d\u3002\u5c06\u79fb\u9664\u591a\u5c11\u4f4d\uff1f\u6b63\u5982\u60a8\u53ef\u80fd\u5df2\u7ecf\u731c\u5230\u7684\uff0c\u5c31\u662f\u4f5c\u4e3a\u4f4d\u7f6e\u6307\u5b9a\u7684\u6570\u5b57\u3002<\/p>\n<p>\u8fd9\u91cc\u6709\u4e00\u4e2a\u4f8b\u5b50\u3002\u5047\u8bbe\u6211\u4eec\u6709 5 &gt;&gt; 2\u3002<\/p>\n<ul class=\"post-ul\">\n<li>JavaScript\u4f1a\u5c065\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u7b49\u6548\u503c\uff0c\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\u662f101\u3002<\/li>\n<li>\u4ece\u53f3\u4fa7\u79fb\u9664\u4e24\u4f4d\u3002\u8fd9\u5c06\u5bfc\u81f4101\u3002<\/li>\n<li>\u5c06\u7ed3\u679c\u8f6c\u6362\u4e3a\u5341\u8fdb\u5236\u3002\u5728\u6211\u4eec\u7684\u4f8b\u5b50\u4e2d\uff0c\u7ed3\u679c\u5c06\u662f1\u3002<\/li>\n<\/ul>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u4f4d\u8fd0\u7b97\u7b26\u521d\u542c\u8d77\u6765\u975e\u5e38\u590d\u6742\uff0c\u4f46\u662f\u4e00\u65e6\u6211\u4eec\u7406\u89e3\u4e86\u57fa\u7840\u77e5\u8bc6\uff0c\u5b83\u5c31\u975e\u5e38\u7b80\u5355\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u201c.toString(2)\u201d\u65b9\u6cd5\u5c06\u4efb\u4f55\u6570\u5b57\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u3002\u8fd9\u79cd\u8f6c\u6362\u5c06\u6709\u52a9\u4e8e\u7406\u89e3\u4f4d\u8fd0\u7b97\u7b26\u7684\u8f93\u51fa\u3002\u6240\u6709\u4f4d\u8fd0\u7b97\u7b26\u5728\u5c06\u64cd\u4f5c\u6570\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u683c\u5f0f\u540e\uff0c\u90fd\u5728\u4f4d\u7ea7\u522b\u4e0a\u5de5\u4f5c\u3002<\/p>\n<\/div>\n<ul class=\"post-ul\">\n<li>\u4f4d\u4e0e\uff08AND\uff09\u8fd0\u7b97\u7b26\uff1a\u5f53\u4e24\u4e2a\u4f4d\u90fd\u4e3a1\u65f6\uff0c\u7ed3\u679c\u4e3a1\uff1b\u5426\u5219\u4e3a0\u3002<\/li>\n<li>\u4f4d\u6216\uff08OR\uff09\u8fd0\u7b97\u7b26\uff1a\u5f53\u81f3\u5c11\u4e00\u4e2a\u4f4d\u4e3a1\u65f6\uff0c\u7ed3\u679c\u4e3a1\uff1b\u5426\u5219\u4e3a0\u3002<\/li>\n<li>\u4f4d\u5f02\u6216\uff08XOR\uff09\u8fd0\u7b97\u7b26\uff1a\u4ec5\u5f53\u4e24\u4e2a\u64cd\u4f5c\u6570\u4f4d\u4e0d\u540c\u65f6\uff0c\u7ed3\u679c\u4e3a1\uff1b\u5426\u5219\u4e3a0\u3002<\/li>\n<li>\u5de6\u79fb\uff08Shift Left\uff09\u8fd0\u7b97\u7b26\uff1a\u5728\u672b\u5c3e\u6dfb\u52a0\u7531\u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u6570\u6307\u5b9a\u76840\u3002\u53f3\u79fb\uff08Shift Right\uff09\u8fd0\u7b97\u7b26\uff1a\u79fb\u9664\u7531\u7b2c\u4e8c\u4e2a\u64cd\u4f5c\u6570\u6307\u5b9a\u7684\u4f4d\u3002<\/li>\n<\/ul>\n<p>\u5e0c\u671b\u8fd9\u7bc7\u7b80\u8981\u7684\u4ecb\u7ecd\u80fd\u5e2e\u52a9\u60a8\u7406\u89e3\u4f4d\u8fd0\u7b97\u7b26\u53ca\u5176\u7ed3\u679c\u7684\u8ba1\u7b97\u65b9\u5f0f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb \u5c3d\u7ba1JavaScript\u4e2d\u7684\u4f4d\u8fd0\u7b97\u7b26\u9c9c\u5c11\u53d7\u5230\u5173\u6ce8\uff0c\u4f46\u5b83\u4eec\u5b9e\u9645\u4e0a\u529f\u80fd\u5f3a\u5927\u4e14\u7528\u9014\u5e7f\u6cdb\u3002\u4f4d\u8fd0\u7b97\u7b26\u53ef\u7528\u4e8e\u66f4\u5feb\u901f\u7684 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[293,294,295,203,184],"class_list":["post-29","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-javascript","tag-294","tag-295","tag-203","tag-184"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>JavaScript\u4f4d\u8fd0\u7b97\u7b26\uff1a\u6df1\u5165\u7406\u89e3\u4e0e\u9ad8\u6548\u5e94\u7528 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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content=\"\u6df1\u5165\u63a2\u7d22JavaScript\u4f4d\u8fd0\u7b97\u7b26\u7684\u539f\u7406\u3001\u7528\u6cd5\u548c\u5b9e\u9645\u5e94\u7528\u573a\u666f\u3002\u5b66\u4e60\u5982\u4f55\u5229\u7528\u4f4d\u8fd0\u7b97\u8fdb\u884c\u9ad8\u6548\u7684\u6570\u636e\u5904\u7406\u3001\u6743\u9650\u7ba1\u7406\u548c\u6027\u80fd\u4f18\u5316\uff0c\u63d0\u5347\u4f60\u7684JavaScript\u7f16\u7a0b\u6280\u80fd\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5728javascript\u4e2d\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-01-20T05:24:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-31T13:34:43+00:00\" \/>\n<meta name=\"author\" content=\"\u79d1, \u96c5\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" 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