{"id":552,"date":"2023-11-15T04:12:10","date_gmt":"2022-12-20T15:19:23","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8replace%e5%92%8cis-na%e5%9c%a8r%e4%b8%ad%e6%9b%bf%e6%8d%a2%e5%80%bc\/"},"modified":"2025-08-02T17:46:01","modified_gmt":"2025-08-02T09:46:01","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8replace%e5%92%8cis-na%e5%9c%a8r%e4%b8%ad%e6%9b%bf%e6%8d%a2%e5%80%bc","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8replace%e5%92%8cis-na%e5%9c%a8r%e4%b8%ad%e6%9b%bf%e6%8d%a2%e5%80%bc\/","title":{"rendered":"R\u8bed\u8a00\u6559\u7a0b\uff1a\u4f7f\u7528replace()\u548cis.na()\u51fd\u6570\u9ad8\u6548\u5904\u7406\u7f3a\u5931\u503c\u7684\u5b8c\u6574\u6307\u5357"},"content":{"rendered":"<h2>\u5f15\u8a00<\/h2>\n<p>\u5728\u6570\u636e\u5206\u6790\u4e2d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u89e3\u51b3\u6570\u636e\u96c6\u4e2d\u5b58\u5728\u7684\u7f3a\u5931\u503c\u3001\u8d1f\u503c\u6216\u4e0d\u51c6\u786e\u503c\u7684\u95ee\u9898\u3002\u8fd9\u4e9b\u95ee\u9898\u53ef\u4ee5\u901a\u8fc7\u75280\u3001NA\u6216\u5747\u503c\u6765\u66ff\u4ee3\u8fd9\u4e9b\u503c\u6765\u89e3\u51b3\u3002<\/p>\n<p>\u5728\u8fd9\u7bc7\u6587\u7ae0\u4e2d\uff0c\u4f60\u5c06\u63a2\u7d22\u5982\u4f55\u5728R\u4e2d\u4f7f\u7528replace()\u548cis.na()\u51fd\u6570\u3002<\/p>\n<h2>\u5148\u51b3\u6761\u4ef6<\/h2>\n<p>\u5b8c\u6210\u8fd9\u4e2a\u6559\u7a0b\uff0c\u60a8\u5c06\u9700\u8981\uff1a<\/p>\n<ul class=\"post-ul\">\n<li>\u5728\u672c\u5730\u6216\u670d\u52a1\u5668\u4e0a\u5b89\u88c5R\u3002<\/li>\n<\/ul>\n<h2>\u7528replace()\u66ff\u6362\u5411\u91cf\u4e2d\u7684\u503c<\/h2>\n<p>\u672c\u8282\u5c06\u5c55\u793a\u5982\u4f55\u5728\u5411\u91cf\u4e2d\u66ff\u6362\u4e00\u4e2a\u503c\u3002<\/p>\n<p>R\u8bed\u6cd5\u4e2d\u7684replace()\u51fd\u6570\u5305\u62ec\u5411\u91cf\u3001\u7d22\u5f15\u5411\u91cf\u548c\u66ff\u6362\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>replace<span class=\"token punctuation\">(<\/span>target<span class=\"token punctuation\">,<\/span> index<span class=\"token punctuation\">,<\/span> replacement<span class=\"token punctuation\">)<\/span><\/code><\/pre>\n<p>\u9996\u5148\uff0c\u521b\u5efa\u4e00\u4e2a\u5411\u91cf\uff1a<\/p>\n<pre class=\"post-pre\"><code>df <span class=\"token operator\">&lt;-<\/span> c<span class=\"token punctuation\">(<\/span><span class=\"token string\">'apple'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'orange'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'grape'<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">'banana'<\/span><span class=\"token punctuation\">)<\/span>\r\ndf<\/code><\/pre>\n<p>\u8fd9\u5c06\u521b\u5efa\u4e00\u4e2a\u5305\u542b\u82f9\u679c\uff0c\u6a59\u5b50\uff0c\u8461\u8404\u548c\u9999\u8549\u7684\u5411\u91cf\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"\u8f93\u51fa\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code>\"apple\" \"orange\" \"grape\" \"banana\"<\/code><\/pre>\n<\/div>\n<p>\u73b0\u5728\uff0c\u8ba9\u6211\u4eec\u628a\u5217\u8868\u4e2d\u7684\u7b2c\u4e8c\u9879\u66ff\u6362\u6389\u3002<\/p>\n<pre class=\"post-pre\"><code>dy <span class=\"token operator\">&lt;-<\/span> replace<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">,<\/span> <mark><span class=\"token number\">2<\/span><\/mark><span class=\"token punctuation\">,<\/span> <mark><span class=\"token string\">'blueberry'<\/span><\/mark><span class=\"token punctuation\">)<\/span>\r\ndy<\/code><\/pre>\n<p>\u8fd9\u5c06\u7528\u84dd\u8393\u53d6\u4ee3\u6a59\u5b50\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"\u8f93\u51fa\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code>\"apple\" \"blueberry\" \"grape\" \"banana\"<\/code><\/pre>\n<\/div>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u5c06\u66ff\u6362\u5217\u8868\u4e2d\u7684\u7b2c\u56db\u9879\u3002<\/p>\n<pre class=\"post-pre\"><code>dx <span class=\"token operator\">&lt;-<\/span> replace<span class=\"token punctuation\">(<\/span>dy<span class=\"token punctuation\">,<\/span> <mark><span class=\"token number\">4<\/span><\/mark><span class=\"token punctuation\">,<\/span> <mark><span class=\"token string\">'cranberry'<\/span><\/mark><span class=\"token punctuation\">)<\/span>\r\ndx<\/code><\/pre>\n<p>\u8fd9\u5c06\u7528\u8513\u8d8a\u8393\u66ff\u4ee3\u9999\u8549\u3002<\/p>\n<div class=\"secondary-code-label\" title=\"\u8f93\u51fa\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code>\"apple\" \"blueberry\" \"grape\" \"cranberry\"<\/code><\/pre>\n<\/div>\n<h2>\u5728R\u4e2d\uff0c\u75280\u66ff\u6362NA\u503c<\/h2>\n<p>\u8003\u8651\u4e00\u4e2a\u60c5\u666f\uff0c\u4f60\u6709\u4e00\u4e2a\u5305\u542b\u6d4b\u91cf\u6570\u636e\u7684\u6570\u636e\u6846\uff1a<\/p>\n<div>\u7a7a\u6c14\u8d28\u91cf<\/p>\n<pre class=\"post-pre\"><code>    Ozone  Solar.R  Wind  Temp  Month  Day\r\n1      41      190   7.4    67      5    1\r\n2      36      118   8.0    72      5    2\r\n3      12      149  12.6    74      5    3\r\n4      18      313  11.5    62      5    4\r\n5      NA       NA  14.3    56      5    5\r\n6      28       NA  14.9    66      5    6\r\n7      23      299   8.6    65      5    7\r\n8      19       99  13.8    59      5    8\r\n9       8       19  20.1    61      5    9\r\n10     NA      194   8.6    69      5   10\r\n11      7       NA   6.9    74      5   11\r\n12     16      256   9.7    69      5   12<\/code><\/pre>\n<\/div>\n<p>\u8fd9\u662f\u4ee5CSV\u683c\u5f0f\u5448\u73b0\u7684\u6570\u636e\u3002<\/p>\n<div>\u7a7a\u6c14\u8d28\u91cf.csv<\/p>\n<pre class=\"post-pre\"><code>Ozone,Solar.R,Wind,Temp,Month,Day\r\n41,190,7.4,67,5,1\r\n36,118,8.0,72,5,2\r\n12,149,12.6,74,5,3\r\n18,313,11.5,62,5,4\r\nNA,NA,14.3,56,5,5\r\n28,NA,14.9,66,5,6\r\n23,299,8.6,65,5,7\r\n19,99,13.8,59,5,8\r\n8,19,20.1,61,5,9\r\nNA,194,8.6,69,5,10\r\n7,NA,6.9,74,5,11\r\n16,256,9.7,69,5,12<\/code><\/pre>\n<\/div>\n<p>\u8fd9\u4e2a\u5305\u542b\u5b57\u7b26\u4e32NA\uff0c\u7528\u4e8e\u8868\u793a\u6570\u636e\u7f3a\u5931\u7684\u60c5\u51b5\u3002<\/p>\n<p>\u4f60\u53ef\u4ee5\u75280\u66ff\u6362\u6389NA\u503c\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5b9a\u4e49\u6570\u636e\u6846\u67b6\uff1a<\/p>\n<pre class=\"post-pre\"><code>df <span class=\"token operator\">&lt;-<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">'air_quality.csv'<\/span><span class=\"token punctuation\">)<\/span><\/code><\/pre>\n<p>\u4f7f\u7528 is.na() \u51fd\u6570\u6765\u68c0\u67e5\u4e00\u4e2a\u503c\u662f\u5426\u4e3a NA\u3002\u7136\u540e\uff0c\u5c06 NA \u503c\u66ff\u6362\u4e3a 0\u3002<\/p>\n<pre class=\"post-pre\"><code>df<span class=\"token punctuation\">[<\/span>is.na<span class=\"token punctuation\">(<\/span>df<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&lt;-<\/span> <span class=\"token number\">0<\/span>\r\ndf<\/code><\/pre>\n<p>\u6570\u636e\u6846\u67b6\u73b0\u5728\u662f\uff1a<\/p>\n<div class=\"secondary-code-label\" title=\"\u8f93\u51fa\">\u8f93\u51fa<\/p>\n<pre class=\"post-pre\"><code>   Ozone Solar.R Wind Temp Month Day\r\n1     41     190  7.4   67     5   1\r\n2     36     118  8.0   72     5   2\r\n3     12     149 12.6   74     5   3\r\n4     18     313 11.5   62     5   4\r\n5      0       0 14.3   56     5   5\r\n6     28       0 14.9   66     5   6\r\n7     23     299  8.6   65     5   7\r\n8     19      99 13.8   59     5   8\r\n9      8      19 20.1   61     5   9\r\n10     0     194  8.6   69     5  10\r\n11     7       0  6.9   74     5  11\r\n12    16     256  9.7   69     5  12<\/code><\/pre>\n<\/div>\n<p>\u6570\u636e\u6846\u4e2d\u6240\u6709NA\u7684\u51fa\u73b0\u90fd\u5df2\u7ecf\u88ab\u66ff\u6362\u3002<\/p>\n<h2>\u5728R\u4e2d\u7528\u503c\u7684\u5e73\u5747\u503c\u66ff\u6362NA\u503c<\/h2>\n<p>\u5728\u6570\u636e\u5206\u6790\u8fc7\u7a0b\u4e2d\uff0c\u901a\u8fc7\u7528\u5e73\u5747\u503c\u66ff\u6362NA\u503c\uff0c\u5728\u8bb8\u591a\u60c5\u51b5\u4e0b\u53ef\u4ee5\u63d0\u9ad8\u7cbe\u786e\u5ea6\u3002mean()\u51fd\u6570\u7528\u4e8e\u8ba1\u7b97\u5e73\u5747\u503c\u3002<\/p>\n<p>\u4e3a\u4e86\u514b\u670d\u8fd9\u79cd\u60c5\u51b5\uff0c\u5c06NA\u503c\u66ff\u6362\u4e3a\u5176\u4f59\u503c\u7684\u5e73\u5747\u503c\u3002\u8fd9\u79cd\u65b9\u6cd5\u5728\u63d0\u9ad8\u51c6\u786e\u6027\u7684\u540c\u65f6\u4e0d\u4f1a\u6709\u4efb\u4f55\u6570\u636e\u4e22\u5931\uff0c\u88ab\u8bc1\u660e\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002<\/p>\n<p>\u8003\u8651\u5177\u6709NA\u503c\u7684\u4e0b\u5217\u8f93\u5165\u6570\u636e\u96c6\uff1a<\/p>\n<div>\u7a7a\u6c14\u8d28\u91cf<\/div>\n<pre class=\"post-pre\"><code>    Ozone  Solar.R  Wind  Temp  Month  Day\r\n1      41      190   7.4    67      5    1\r\n2      36      118   8.0    72      5    2\r\n3      12      149  12.6    74      5    3\r\n4      18      313  11.5    62      5    4\r\n5      NA       NA  14.3    56      5    5\r\n6      28       NA  14.9    66      5    6\r\n7      23      299   8.6    65      5    7\r\n8      19       99  13.8    59      5    8\r\n9       8       19  20.1    61      5    9\r\n10     NA      194   8.6    69      5   10\r\n11      7       NA   6.9    74      5   11\r\n12     16      256   9.7    69      5   12\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code>df <span class=\"token operator\">&lt;-<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">'air_quality.csv'<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528<code>is.na()<\/code>\u548c<code>mean()<\/code>\u51fd\u6570\u5c06NA\u503c\u66ff\u6362\u6389\u3002<\/p>\n<pre class=\"post-pre\"><code>df<span class=\"token operator\">$<\/span>Ozone<span class=\"token punctuation\">[<\/span>is.na<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>Ozone<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&lt;-<\/span> mean<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>Ozone<span class=\"token punctuation\">,<\/span> na.rm <span class=\"token operator\">=<\/span> <span class=\"token boolean\">TRUE<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u9996\u5148\uff0c\u6b64\u4ee3\u7801\u67e5\u627eOzone\u5217\u4e2d\u6240\u6709NA\u7684\u51fa\u73b0\u6b21\u6570\u3002\u63a5\u4e0b\u6765\uff0c\u5b83\u8ba1\u7b97Ozone\u5217\u4e2d\u6240\u6709\u503c\u7684\u5747\u503c &#8211; \u6392\u9664\u4f7f\u7528<code>na.rm<\/code>\u53c2\u6570\u7684NA\u503c\u3002\u7136\u540e\uff0c\u5c06\u6bcf\u4e2aNA\u7684\u5b9e\u4f8b\u66ff\u6362\u4e3a\u8ba1\u7b97\u5f97\u51fa\u7684\u5747\u503c\u3002<\/p>\n<p>\u7136\u540e\u5c06\u503c\u56db\u820d\u4e94\u5165\u5230\u6574\u6570\u4f4d\u3002<\/p>\n<pre class=\"post-pre\"><code>df<span class=\"token operator\">$<\/span>Ozone <span class=\"token operator\">&lt;-<\/span> round<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>Ozone<span class=\"token punctuation\">,<\/span> digits <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u6570\u636e\u6846\u662f\u5982\u4e0b\uff1a<\/p>\n<pre class=\"post-pre\"><code>   Ozone Solar.R Wind Temp Month Day\r\n1     41     190  7.4   67     5   1\r\n2     36     118  8.0   72     5   2\r\n3     12     149 12.6   74     5   3\r\n4     18     313 11.5   62     5   4\r\n5     21      NA 14.3   56     5   5\r\n6     28      NA 14.9   66     5   6\r\n7     23     299  8.6   65     5   7\r\n8     19      99 13.8   59     5   8\r\n9      8      19 20.1   61     5   9\r\n10    21     194  8.6   69     5  10\r\n11     7      NA  6.9   74     5  11\r\n12    16     256  9.7   69     5  12\r\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u5c06Ozone\u5217\u4e2d\u7684NA\u503c\u66ff\u6362\u4e3aOzone\u5217\u6570\u503c\u7684\u56db\u820d\u4e94\u5165\u5747\u503c\uff0821\uff09\u3002<\/p>\n<h2>\u5728R\u4e2d\u4f7f\u75280\u6216NA\u66ff\u6362\u8d1f\u503c<\/h2>\n<p>\u5728\u6570\u636e\u5206\u6790\u8fc7\u7a0b\u4e2d\uff0c\u6709\u65f6\u5019\u4f60\u4f1a\u5e0c\u671b\u75280\u6216NA\u66ff\u6362\u6570\u636e\u6846\u4e2d\u7684\u8d1f\u503c\u3002\u8fd9\u662f\u4e3a\u4e86\u907f\u514d\u7ed3\u679c\u5448\u73b0\u8d1f\u8d8b\u52bf\u3002\u6570\u636e\u96c6\u4e2d\u5b58\u5728\u7684\u8d1f\u503c\u4f1a\u8bef\u5bfc\u5206\u6790\uff0c\u5e76\u4ea7\u751f\u9519\u8bef\u7684\u51c6\u786e\u6027\u3002<\/p>\n<p>\u8003\u8651\u4ee5\u4e0b\u5177\u6709\u8d1f\u503c\u7684\u8f93\u5165\u6570\u636e\u96c6\uff1a<\/p>\n<div>\u8d1f\u503c\u6570\u636e\u8868.csv<\/div>\n<pre class=\"post-pre\"><code>    count  entry1  entry2  entry3\r\n 1      1     345    -234     345\r\n 2      2      65     654     867\r\n 3      3      23     345    3456\r\n 4      4      87     876       9\r\n 5      5    2345      34     867\r\n 6      6     876      98      76\r\n 7      7      35    -456     123\r\n 8      8      87      98     345\r\n 9      9    -765      67     765\r\n10     10    4567     -87     234\r\n<\/code><\/pre>\n<p>\u8fd9\u662f\u4ee5CSV\u683c\u5f0f\u5448\u73b0\u7684\u6570\u636e\u3002<\/p>\n<pre class=\"post-pre\"><code>count,entry1,entry2,entry3\r\n1,345,-234,345\r\n2,65,654,867\r\n3,23,345,3456\r\n4,87,876,9\r\n5,2345,34,867\r\n6,876,98,76\r\n7,35,-456,123\r\n8,87,98,345\r\n9,-765,67,765\r\n10,4567,-87,234\r\n<\/code><\/pre>\n<p>\u8bfb\u53d6CSV\u6587\u4ef6\u3002<\/p>\n<pre class=\"post-pre\"><code>df <span class=\"token operator\">&lt;-<\/span> read.csv<span class=\"token punctuation\">(<\/span><span class=\"token string\">'negative_values.csv'<\/span><span class=\"token punctuation\">)<\/span>\r\n<\/code><\/pre>\n<h3>\u5c06\u8d1f\u503c\u66ff\u6362\u4e3a0<\/h3>\n<p>\u4f7f\u7528<code>replace()<\/code>\u51fd\u6570\u5c06entry2\u5217\u4e2d\u7684\u8d1f\u503c\u66ff\u6362\u4e3a0\uff1a<\/p>\n<pre class=\"post-pre\"><code>data_zero <span class=\"token operator\">&lt;-<\/span> df\r\ndata_zero<span class=\"token operator\">$<\/span>entry2 <span class=\"token operator\">&lt;-<\/span> replace<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>entry2<span class=\"token punctuation\">,<\/span> df<span class=\"token operator\">$<\/span>entry2 <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span> \r\ndata_zero\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u7684\u6570\u636e\u6846\u67b6\u662f\uff1a<\/p>\n<pre class=\"post-pre\"><code>   count entry1 entry2 entry3\r\n1      1    345      0    345\r\n2      2     65    654    867\r\n3      3     23    345   3456\r\n4      4     87    876      9\r\n5      5   2345     34    867\r\n6      6    876     98     76\r\n7      7     35      0    123\r\n8      8     87     98    345\r\n9      9   -765     67    765\r\n10    10   4567      0    234\r\n<\/code><\/pre>\n<p>entry2\u5217\u4e2d\u7684\u8d1f\u503c\u5df2\u88ab\u66ff\u6362\u4e3a0\u3002<\/p>\n<h3>\u5c06\u8d1f\u6570\u66ff\u6362\u4e3aNA<\/h3>\n<h2>\u4f7f\u7528replace()\u51fd\u6570\u5c06entry2\u5217\u4e2d\u7684\u8d1f\u503c\u6539\u4e3aNA<\/h2>\n<pre class=\"post-pre\"><code>data_na <span class=\"token operator\">&lt;-<\/span> df\r\ndata_na<span class=\"token operator\">$<\/span>entry2 <span class=\"token operator\">&lt;-<\/span> replace<span class=\"token punctuation\">(<\/span>df<span class=\"token operator\">$<\/span>entry2<span class=\"token punctuation\">,<\/span> df<span class=\"token operator\">$<\/span>entry2 <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">NA<\/span><span class=\"token punctuation\">)<\/span>\r\ndata_na\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u7684\u6570\u636e\u6846\u662f\uff1a<\/p>\n<div class=\"secondary-code-label\" title=\"\u8f93\u51fa\u7ed3\u679c\">\u8f93\u51fa\u7ed3\u679c<\/p>\n<pre class=\"post-pre\"><code>   count entry1 entry2 entry3\r\n1     1    345     NA    345\r\n2     2     65    654    867\r\n3     3     23    345   3456\r\n4     4     87    867      9\r\n5     5   2345     34    867\r\n6     6    876     98     76\r\n7     7     35     NA    123\r\n8     8     87     98    345\r\n9     9   -765     67    765\r\n10   10   4567     NA    234\r\n<\/code><\/pre>\n<\/div>\n<p>\u5728entry2\u5217\u4e2d\u7684\u8d1f\u503c\u5df2\u88ab\u66ff\u6362\u4e3aNA\u3002<\/p>\n<h2>\u7ed3\u8bba<\/h2>\n<p>\u5728R\u4e2d\uff0c\u66ff\u6362\u6570\u636e\u6846\u4e2d\u7684\u503c\u662f\u8fdb\u884c\u6570\u636e\u5206\u6790\u7684\u4e00\u4e2a\u65b9\u4fbf\u9009\u9879\u3002\u4f7f\u7528R\u4e2d\u7684replace()\u51fd\u6570\uff0c\u60a8\u53ef\u4ee5\u5728\u9002\u5f53\u7684\u65f6\u5019\u5c06NA\u30010\u548c\u8d1f\u503c\u8fdb\u884c\u8f6c\u6362\uff0c\u4ee5\u6e05\u7406\u5927\u578b\u6570\u636e\u96c6\u8fdb\u884c\u5206\u6790\u3002<\/p>\n<p>\u7ee7\u7eed\u5b66\u4e60\u5982\u4f55\u5728R\u4e2d\u4f7f\u7528sub()\u548cgsub()\u51fd\u6570\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f15\u8a00 \u5728\u6570\u636e\u5206\u6790\u4e2d\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u89e3\u51b3\u6570\u636e\u96c6\u4e2d\u5b58\u5728\u7684\u7f3a\u5931\u503c\u3001\u8d1f\u503c\u6216\u4e0d\u51c6\u786e\u503c\u7684\u95ee\u9898\u3002\u8fd9\u4e9b\u95ee\u9898\u53ef\u4ee5\u901a\u8fc7\u75280\u3001NA\u6216\u5747\u503c [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[586,391,1616],"class_list":["post-552","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-r","tag-391","tag-1616"],"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>R\u8bed\u8a00\u6559\u7a0b\uff1a\u4f7f\u7528replace()\u548cis.na()\u51fd\u6570\u9ad8\u6548\u5904\u7406\u7f3a\u5931\u503c\u7684\u5b8c\u6574\u6307\u5357 - Blog - Silicon 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