{"id":59610,"date":"2023-10-29T21:31:28","date_gmt":"2023-10-29T13:31:28","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=59610"},"modified":"2023-10-29T21:31:32","modified_gmt":"2023-10-29T13:31:32","slug":"%e4%bb%80%e4%b9%88%e6%98%afcontext-api","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/59610.html","title":{"rendered":"\u4ec0\u4e48\u662fContext API"},"content":{"rendered":"\n
\n

Context API\u662f\u4e00\u79cd\u5728React\u4e2d\u7528\u4e8e\u5168\u5c40\u72b6\u6001\u7ba1\u7406\u7684\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728\u7ec4\u4ef6\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7684\u65b9\u6cd5\uff0c\u800c\u65e0\u9700\u624b\u52a8\u5c06\u6570\u636e\u901a\u8fc7props\u4e00\u5c42\u5c42\u4f20\u9012\u3002\u5b83\u57fa\u4e8eReact\u7684\u4e0a\u4e0b\u6587\u673a\u5236\u6784\u5efa\uff0c\u5141\u8bb8\u60a8\u521b\u5efa\u4e00\u4e2a\u5168\u5c40\u6570\u636e\u5b58\u50a8\uff0c\u53ef\u4ee5\u88ab\u6574\u4e2a\u7ec4\u4ef6\u6811\u8bbf\u95ee\u3002\u8fd9\u5bf9\u4e8e\u7ba1\u7406\u5168\u5c40\u4e3b\u9898\u3001\u7528\u6237\u8eab\u4efd\u8ba4\u8bc1\u72b6\u6001\u3001\u8bed\u8a00\u9996\u9009\u9879\u7b49\u6570\u636e\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/blockquote>\n\n\n\n

1. Context API\u7684\u57fa\u672c\u4ecb\u7ecd<\/h2>\n\n\n\n

Context API\u662fReact\u63d0\u4f9b\u7684\u4e00\u79cd\u5168\u5c40\u72b6\u6001\u7ba1\u7406\u89e3\u51b3\u65b9\u6848\uff0c\u5141\u8bb8\u60a8\u5728\u7ec4\u4ef6\u4e4b\u95f4\u5171\u4eab\u6570\u636e\uff0c\u800c\u4e0d\u5fc5\u901a\u8fc7props\u5c06\u6570\u636e\u4e00\u7ea7\u7ea7\u5730\u4f20\u9012\u3002\u5b83\u57fa\u4e8eReact\u7684\u4e0a\u4e0b\u6587\u673a\u5236\u6784\u5efa\uff0c\u5141\u8bb8\u60a8\u521b\u5efa\u4e00\u4e2a\u5168\u5c40\u6570\u636e\u5b58\u50a8\uff0c\u53ef\u4ee5\u88ab\u6574\u4e2a\u7ec4\u4ef6\u6811\u8bbf\u95ee\u3002\u8fd9\u5bf9\u4e8e\u7ba1\u7406\u5168\u5c40\u4e3b\u9898\u3001\u7528\u6237\u8eab\u4efd\u8ba4\u8bc1\u72b6\u6001\u3001\u8bed\u8a00\u9996\u9009\u9879\u7b49\u6570\u636e\u975e\u5e38\u6709\u7528\u3002<\/p>\n\n\n\n

2. Context API\u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n\n\n\n

Context API\u57fa\u4e8e\u4e24\u4e3b\u8981\u7ec4\u4ef6\uff1a<Provider><\/code>\u548c<Consumer><\/code>\u3002<Provider><\/code>\u7528\u4e8e\u5305\u88f9\u60a8\u5e0c\u671b\u5171\u4eab\u7684\u6570\u636e\uff0c\u800c<Consumer><\/code>\u7528\u4e8e\u8bbf\u95ee\u8fd9\u4e9b\u6570\u636e\u3002\u5f53\u60a8\u5728<Provider><\/code>\u4e2d\u66f4\u65b0\u6570\u636e\u65f6\uff0c\u6240\u6709\u5305\u542b<Consumer><\/code>\u7684\u7ec4\u4ef6\u90fd\u4f1a\u63a5\u6536\u5230\u65b0\u7684\u6570\u636e\u3002\u8fd9\u79cd\u673a\u5236\u4f7f\u5f97\u6570\u636e\u5171\u4eab\u53d8\u5f97\u975e\u5e38\u4fbf\u6377\u3002<\/p>\n\n\n\n

3. Context API\u7684\u5b9e\u9645\u7528\u9014<\/h2>\n\n\n\n
    \n
  • \u5168\u5c40\u4e3b\u9898\u5207\u6362\uff1a<\/strong> \u60a8\u53ef\u4ee5\u4f7f\u7528Context API\u6765\u5b58\u50a8\u5e94\u7528\u7684\u4e3b\u9898\u4fe1\u606f\uff0c\u5141\u8bb8\u7528\u6237\u5207\u6362\u5e94\u7528\u7684\u5916\u89c2\u98ce\u683c\uff0c\u800c\u4e0d\u5fc5\u624b\u52a8\u66f4\u65b0\u6bcf\u4e2a\u7ec4\u4ef6\u7684\u6837\u5f0f\u3002<\/li>\n\n\n\n
  • \u7528\u6237\u8eab\u4efd\u8ba4\u8bc1\u72b6\u6001\uff1a<\/strong> \u5b58\u50a8\u7528\u6237\u767b\u5f55\u72b6\u6001\u3001\u7528\u6237\u4fe1\u606f\u548c\u6743\u9650\u4fe1\u606f\u3002\u8fd9\u6837\uff0c\u6574\u4e2a\u5e94\u7528\u53ef\u4ee5\u6839\u636e\u7528\u6237\u7684\u8eab\u4efd\u8fdb\u884c\u4e0d\u540c\u7684\u5c55\u793a\u3002<\/li>\n\n\n\n
  • \u591a\u8bed\u8a00\u652f\u6301\uff1a<\/strong> \u5728\u591a\u8bed\u8a00\u5e94\u7528\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Context API\u6765\u7ba1\u7406\u5f53\u524d\u8bed\u8a00\u9996\u9009\u9879\uff0c\u4ee5\u4fbf\u5728\u5e94\u7528\u4e2d\u5b9e\u73b0\u56fd\u9645\u5316\u3002<\/li>\n<\/ul>\n\n\n\n

    4. Context API\u7684\u5386\u53f2<\/h2>\n\n\n\n

    Context API\u5e76\u975eReact\u7684\u65b0\u529f\u80fd\uff0c\u4f46\u5b83\u5728React 16.3\u4e4b\u540e\u5f97\u5230\u4e86\u6539\u8fdb\u548c\u63a8\u5e7f\u3002\u5728\u65e9\u671f\u7248\u672c\u4e2d\uff0cContext API\u7684\u4f7f\u7528\u8f83\u4e3a\u590d\u6742\uff0c\u4f46\u73b0\u5728\u5df2\u7ecf\u53d8\u5f97\u66f4\u52a0\u53cb\u597d\u548c\u5f3a\u5927\u3002<\/p>\n\n\n\n

    5. Context API\u7684\u5c40\u9650\u6027<\/h2>\n\n\n\n
      \n
    • \u590d\u6742\u6027\uff1a<\/strong> \u5f53\u5e94\u7528\u53d8\u5f97\u975e\u5e38\u5e9e\u5927\u65f6\uff0cContext API\u53ef\u80fd\u5bfc\u81f4\u4e0a\u4e0b\u6587\u5d4c\u5957\uff0c\u4f7f\u5e94\u7528\u96be\u4ee5\u7ef4\u62a4\u3002\u8fd9\u65f6\u5019\u9700\u8981\u8c28\u614e\u4f7f\u7528\u3002<\/li>\n\n\n\n
    • \u4e0d\u9002\u7528\u6240\u6709\u60c5\u51b5\uff1a<\/strong> \u4e0d\u662f\u6bcf\u4e2a\u5e94\u7528\u90fd\u9700\u8981\u5168\u5c40\u72b6\u6001\u7ba1\u7406\uff0c\u5bf9\u4e8e\u5c0f\u578b\u5e94\u7528\uff0c\u4f7f\u7528\u672c\u5730\u72b6\u6001\u8db3\u591f\u3002<\/li>\n\n\n\n
    • \u4e0d\u9002\u7528\u4e8e\u670d\u52a1\u7aef\u6e32\u67d3\uff1a<\/strong> Context API\u4e0d\u9002\u7528\u4e8e\u670d\u52a1\u7aef\u6e32\u67d3\uff0c\u56e0\u4e3a\u5b83\u4f9d\u8d56\u4e8eReact\u7ec4\u4ef6\u6811\u7684\u5ba2\u6237\u7aef\u6e32\u67d3\u3002<\/li>\n<\/ul>\n\n\n
      \n
      \"\"<\/figure><\/div>\n\n\n

      \u5e38\u89c1\u95ee\u7b54\uff1a<\/strong><\/p>\n\n\n\n

        \n
      • \u95ee\uff1a\u4ec0\u4e48\u662fReact\u7684Context API\uff1f<\/li>\n\n\n\n
      • \u7b54\uff1aReact\u7684Context API\u662f\u4e00\u79cd\u7528\u4e8e\u5728React\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u5168\u5c40\u72b6\u6001\u7ba1\u7406\u7684\u5de5\u5177\u3002\u5b83\u5141\u8bb8\u60a8\u5c06\u6570\u636e\u5728\u6574\u4e2a\u7ec4\u4ef6\u6811\u4e2d\u4f20\u9012\uff0c\u800c\u4e0d\u9700\u8981\u624b\u52a8\u901a\u8fc7props\u5c06\u6570\u636e\u5c42\u5c42\u4f20\u9012\u3002<\/li>\n<\/ul>\n\n\n\n
          \n
        • \u95ee\uff1aContext API\u4e0eRedux\u6216Mobx\u6709\u4f55\u4e0d\u540c\uff1f<\/li>\n\n\n\n
        • \u7b54\uff1aRedux\u548cMobx\u662f\u7b2c\u4e09\u65b9\u5e93\uff0c\u63d0\u4f9b\u4e86\u66f4\u5f3a\u5927\u7684\u72b6\u6001\u7ba1\u7406\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u5927\u578b\u5e94\u7528\u3002Context API\u5219\u662fReact\u7684\u539f\u751f\u529f\u80fd\uff0c\u66f4\u9002\u5408\u4e2d\u5c0f\u578b\u5e94\u7528\uff0c\u907f\u514d\u4e86\u5f15\u5165\u989d\u5916\u7684\u4f9d\u8d56\u3002<\/li>\n<\/ul>\n\n\n\n
            \n
          • \u95ee\uff1a\u4ec0\u4e48\u60c5\u51b5\u4e0b\u5e94\u8be5\u4f7f\u7528Context API\uff1f<\/li>\n\n\n\n
          • \u7b54\uff1a Context API\u9002\u7528\u4e8e\u9700\u8981\u8de8\u591a\u4e2a\u7ec4\u4ef6\u4f20\u9012\u6570\u636e\u7684\u573a\u666f\uff0c\u4f8b\u5982\u5168\u5c40\u4e3b\u9898\u5207\u6362\u3001\u7528\u6237\u8eab\u4efd\u8ba4\u8bc1\u72b6\u6001\u548c\u591a\u8bed\u8a00\u652f\u6301\u7b49\u3002\u5bf9\u4e8e\u5c0f\u578b\u7ec4\u4ef6\u6811\u6216\u672c\u5730\u72b6\u6001\uff0c\u4e0d\u5fc5\u5f15\u5165Context API\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"Context API\u662f\u4e00\u79cd\u5728React\u4e2d\u7528\u4e8e\u5168\u5c40\u72b6\u6001\u7ba1\u7406\u7684\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u5728\u7ec4\u4ef6\u4e4b\u95f4\u4f20\u9012\u6570\u636e\u7684\u65b9\u6cd5\uff0c\u800c\u65e0\u9700 […]","protected":false},"author":4,"featured_media":59611,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[2952,2953,442],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/59610"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=59610"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/59610\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/59611"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=59610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=59610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=59610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}