{"id":2999,"date":"2018-02-27T10:44:21","date_gmt":"2018-02-27T02:44:21","guid":{"rendered":"http:\/\/www.daliane.com\/?p=2999"},"modified":"2018-02-27T11:03:10","modified_gmt":"2018-02-27T03:03:10","slug":"dom_shi_jian_liu_de_san_ge_jie_duan","status":"publish","type":"post","link":"http:\/\/www.daliane.com\/category\/jinjiaoyou\/dom_shi_jian_liu_de_san_ge_jie_duan\/","title":{"rendered":"DOM\u4e8b\u4ef6\u6d41\u7684\u4e09\u4e2a\u9636\u6bb5"},"content":{"rendered":"

\n\t\u6d41
\n<\/h2>\n

\n\t\u6d41\u7684\u6982\u5ff5\uff0c\u5728\u73b0\u4eca\u7684JavaScript\u4e2d\u968f\u5904\u53ef\u89c1\u3002\u6bd4\u5982\u8bf4React\u4e2d\u7684\u5355\u5411\u6570\u636e\u6d41\uff0cNode\u4e2d\u7684\u6d41\uff0c\u53c8\u6216\u662f\u4eca\u5929\u672c\u6587\u6240\u8bb2\u7684DOM\u4e8b\u4ef6\u6d41\u3002\u90fd\u662f\u6d41\u7684\u4e00\u79cd\u751f\u52a8\u4f53\u73b0\u3002
\n\u81f3\u4e8e\u6d41\u7684\u5177\u4f53\u6982\u5ff5\uff0c\u6211\u4eec\u91c7\u7528\u4e0b\u6587\u7684\u89e3\u91ca\uff1a\n<\/p>\n

\n

\n\t\t\u7528\u672f\u8bed\u8bf4\u6d41\u662f\u5bf9\u8f93\u5165\u8f93\u51fa\u8bbe\u5907\u7684\u62bd\u8c61\u3002\u4ee5\u7a0b\u5e8f\u7684\u89d2\u5ea6\u8bf4\uff0c\u6d41\u662f\u5177\u6709\u65b9\u5411\u7684\u6570\u636e\u3002\n\t<\/p>\n<\/blockquote>\n

\n\t<\/a><\/a>\u4e8b\u4ef6\u6d41\u4e4b\u4e8b\u4ef6\u5192\u6ce1\u4e0e\u4e8b\u4ef6\u6355\u83b7
\n<\/h2>\n

\n\t\u5728\u6d4f\u89c8\u5668\u53d1\u5c55\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5f00\u53d1\u56e2\u961f\u9047\u5230\u4e86\u4e00\u4e2a\u95ee\u9898\u3002\u90a3\u5c31\u662f\u9875\u9762\u4e2d\u7684\u54ea\u4e00\u90e8\u5206\u62e5\u6709\u7279\u5b9a\u7684\u4e8b\u4ef6\uff1f
\n\u53ef\u4ee5\u60f3\u8c61\u753b\u5728\u4e00\u5f20\u7eb8\u4e0a\u7684\u4e00\u7ec4\u540c\u5fc3\u5706\uff0c\u5982\u679c\u4f60\u628a\u624b\u6307\u653e\u5728\u5706\u5fc3\u4e0a\uff0c\u90a3\u4e48\u4f60\u7684\u624b\u6307\u6307\u5411\u7684\u5176\u5b9e\u4e0d\u662f\u4e00\u4e2a\u5706\uff0c\u800c\u662f\u7eb8\u4e0a\u6240\u6709\u7684\u5706\u3002\u653e\u5230\u5b9e\u9645\u9875\u9762\u4e2d\u5c31\u662f\uff0c\u4f60\u70b9\u51fb\u4e00\u4e2a\u6309\u94ae\uff0c\u4e8b\u5b9e\u4e0a\u4f60\u8fd8\u540c\u65f6\u70b9\u51fb\u4e86\u6309\u94ae\u6240\u6709\u7684\u7236\u5143\u7d20\u3002
\n\u5f00\u53d1\u56e2\u961f\u7684\u95ee\u9898\u5c31\u5728\u4e8e\uff0c\u5f53\u70b9\u51fb\u6309\u94ae\u65f6\uff0c\u662f\u6309\u94ae\u6700\u5916\u5c42\u7684\u7236\u5143\u7d20\u5148\u6536\u5230\u4e8b\u4ef6\u5e76\u6267\u884c\uff0c\u8fd8\u662f\u5177\u4f53\u5143\u7d20\u5148\u6536\u5230\u4e8b\u4ef6\u5e76\u6267\u884c\uff1f\u6240\u4ee5\u8fd9\u513f\u5f15\u5165\u4e86\u4e8b\u4ef6\u6d41\u7684\u6982\u5ff5\u3002\n<\/p>\n

\n

\n\t\t\u4e8b\u4ef6\u6d41\u6240\u63cf\u8ff0\u7684\u5c31\u662f\u4ece\u9875\u9762\u4e2d\u63a5\u53d7\u4e8b\u4ef6\u7684\u987a\u5e8f\u3002\n\t<\/p>\n<\/blockquote>\n

\n\t\u56e0\u4e3a\u6709\u4e24\u79cd\u89c2\u70b9\uff0c\u6240\u4ee5\u4e8b\u4ef6\u6d41\u4e5f\u6709\u4e24\u79cd\uff0c\u5206\u522b\u662f\u4e8b\u4ef6\u5192\u6ce1\u548c\u4e8b\u4ef6\u6355\u83b7\u3002\u73b0\u884c\u7684\u4e3b\u6d41\u662f\u4e8b\u4ef6\u5192\u6ce1\u3002\n<\/p>\n

\n\t<\/a><\/a>\u4e8b\u4ef6\u5192\u6ce1
\n<\/h3>\n

\n\t\u4e8b\u4ef6\u5192\u6ce1\u5373\u4e8b\u4ef6\u5f00\u59cb\u65f6\uff0c\u7531\u6700\u5177\u4f53\u7684\u5143\u7d20\u63a5\u6536\uff08\u4e5f\u5c31\u662f\u4e8b\u4ef6\u53d1\u751f\u6240\u5728\u7684\u8282\u70b9\uff09\uff0c\u7136\u540e\u9010\u7ea7\u4f20\u64ad\u5230\u8f83\u4e3a\u4e0d\u5177\u4f53\u7684\u8282\u70b9\u3002
\n\u4e3e\u4e2a\u6817\u5b50\uff0c\u5c31\u5f88\u5bb9\u6613\u660e\u767d\u4e86\u3002\n<\/p>\n\n\n\n
\n
<\/pre>\n<\/td>\n
\n
\r\n<\/pre>\n
<!DOCTYPE html>\r\n<html lang=\"en\">\r\n<head>\r\n  <meta charset=\"UTF-8\">\r\n  <title>Event Bubbling<\/title>\r\n<\/head>\r\n<body>\r\n  <button id=\"clickMe\">Click Me<\/button>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n
\u7136\u540e\uff0c\u6211\u4eec\u7ed9button\u548c\u5b83\u7684\u7236\u5143\u7d20\uff0c\u52a0\u5165\u70b9\u51fb\u4e8b\u4ef6\u3002\n\t\t\t<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/p>\n\n\n\n
\n
<\/pre>\n<\/td>\n
\n
\r\n<\/pre>\n
var button = document.getElementById('clickMe');\r\n\r\nbutton.onclick = function() {\r\n  console.log('1. You click Button');\r\n};\r\ndocument.body.onclick = function() {\r\n  console.log('2. You click body');\r\n};\r\ndocument.onclick = function() {\r\n  console.log('3. You click document');\r\n};\r\nwindow.onclick = function() {\r\n  console.log('4. You click window');\r\n};<\/pre>\n
<\/p>\n
\u6548\u679c\u5982\u56fe\u6240\u793a\uff1a<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\t
\n\"\"<\/a>\n<\/p>\n
\n\t\u5728\u4ee3\u7801\u6240\u793a\u7684\u9875\u9762\u4e2d\uff0c\u5982\u679c\u70b9\u51fb\u4e86button\uff0c\u90a3\u4e48\u8fd9\u4e2a\u70b9\u51fb\u4e8b\u4ef6\u4f1a\u6309\u5982\u4e0b\u7684\u987a\u5e8f\u4f20\u64ad\uff08Chrome\u6d4f\u89c8\u5668\uff09\uff1a\n<\/p>\n
    \n
  1. \n\t\tbutton\n\t<\/li>\n
  2. \n\t\tbody\n\t<\/li>\n
  3. \n\t\tdocument\n\t<\/li>\n
  4. \n\t\twindow\n\t<\/li>\n<\/ol>\n
    \n\t\u4e5f\u5c31\u662f\u8bf4\uff0cclick\u4e8b\u4ef6\u9996\u5148\u5728<button>\u5143\u7d20\u4e0a\u53d1\u751f\uff0c\u7136\u540e\u9010\u7ea7\u5411\u4e0a\u4f20\u64ad\u3002\u8fd9\u5c31\u662f\u4e8b\u4ef6\u5192\u6ce1\u3002\n<\/p>\n
    \n\t<\/a><\/a>\u4e8b\u4ef6\u6355\u83b7
    \n<\/h3>\n
    \n\t\u4e8b\u4ef6\u6355\u83b7\u7684\u6982\u5ff5\uff0c\u4e0e\u4e8b\u4ef6\u5192\u6ce1\u6b63\u597d\u76f8\u53cd\u3002\u5b83\u8ba4\u4e3a\u5f53\u67d0\u4e2a\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u7236\u5143\u7d20\u5e94\u8be5\u66f4\u65e9\u63a5\u6536\u5230\u4e8b\u4ef6\uff0c\u5177\u4f53\u5143\u7d20\u5219\u6700\u540e\u63a5\u6536\u5230\u4e8b\u4ef6\u3002\u6bd4\u5982\u8bf4\u521a\u624d\u7684demo\uff0c\u5982\u679c\u662f\u4e8b\u4ef6\u6355\u83b7\u7684\u8bdd\uff0c\u4e8b\u4ef6\u53d1\u751f\u987a\u5e8f\u4f1a\u662f\u8fd9\u6837\u7684\uff1a\n<\/p>\n
      \n
    1. \n\t\twindow\n\t<\/li>\n
    2. \n\t\tdocument\n\t<\/li>\n
    3. \n\t\tbody\n\t<\/li>\n
    4. \n\t\tbutton\n\t<\/li>\n<\/ol>\n
      \n\t\"\"<\/a>
      \n\u5f53\u7136\uff0c\u7531\u4e8e\u65f6\u4ee3\u66f4\u8fed\uff0c\u4e8b\u4ef6\u5192\u6ce1\u65b9\u5f0f\u66f4\u80dc\u4e00\u7b79\u3002\u6240\u4ee5\u653e\u5fc3\u7684\u4f7f\u7528\u4e8b\u4ef6\u5192\u6ce1\uff0c\u6709\u7279\u6b8a\u9700\u8981\u518d\u4f7f\u7528\u4e8b\u4ef6\u6355\u83b7\u5373\u53ef\u3002\n<\/p>\n
      \n\t<\/a><\/a>DOM\u4e8b\u4ef6\u6d41
      \n<\/h2>\n
      \n\tDOM\u4e8b\u4ef6\u6d41\u5305\u62ec\u4e09\u4e2a\u9636\u6bb5\u3002\n<\/p>\n
        \n
      1. \n\t\t\u4e8b\u4ef6\u6355\u83b7\u9636\u6bb5\n\t<\/li>\n
      2. \n\t\t\u5904\u4e8e\u76ee\u6807\u9636\u6bb5\n\t<\/li>\n
      3. \n\t\t\u4e8b\u4ef6\u5192\u6ce1\u9636\u6bb5\n\t<\/li>\n<\/ol>\n
        \n\t\u5982\u56fe\u6240\u793a\uff08\u56fe\u7247\u6e90\u4e8e\u7f51\u7edc\uff0c\u82e5\u4fb5\u6743\u8bf7\u544a\u77e5\uff09\uff1a
        \n        \"\"<\/a>\n<\/p>\n
        \n\t<\/a><\/a>1. \u4e8b\u4ef6\u6355\u83b7\u9636\u6bb5
        \n<\/h3>\n
        \n\t\u4e5f\u5c31\u662f\u8bf4\uff0c\u5f53\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u9996\u5148\u53d1\u751f\u7684\u662f\u4e8b\u4ef6\u6355\u83b7\uff0c\u4e3a\u7236\u5143\u7d20\u622a\u83b7\u4e8b\u4ef6\u63d0\u4f9b\u4e86\u673a\u4f1a\u3002
        \n\u4f8b\u5982\uff0c\u6211\u628a\u4e0a\u9762\u7684Demo\u4e2d\uff0cwindow\u70b9\u51fb\u4e8b\u4ef6\u66f4\u6539\u4e3a\u4f7f\u7528\u4e8b\u4ef6\u6355\u83b7\u6a21\u5f0f\u3002(addEventListener\u6700\u540e\u4e00\u4e2a\u53c2\u6570\uff0c\u4e3atrue\u5219\u4ee3\u8868\u4f7f\u7528\u4e8b\u4ef6\u6355\u83b7\u6a21\u5f0f<\/span>\uff0cfalse\u5219\u8868\u793a\u4f7f\u7528\u4e8b\u4ef6\u5192\u6ce1\u6a21\u5f0f\u3002\u4e0d\u7406\u89e3\u7684\u53ef\u4ee5\u53bb\u5b66\u4e60\u4e00\u4e0baddEventListener\u51fd\u6570\u7684\u4f7f\u7528)\n<\/p>\n\n\n\n
        \n
        <\/pre>\n<\/td>\n
        		\n
        \r\n<\/pre>\n
        window.addEventListener('click', function() {\r\n  console.log('4. You click window');\r\n}, true);<\/pre>\n
        <\/p>\n
        \u6b64\u65f6\uff0c\u70b9\u51fbbutton\u7684\u6548\u679c\u662f\u8fd9\u6837\u7684\u3002<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n\t
        \n\"\"<\/a>\n<\/p>\n
        \n\t\u53ef\u4ee5\u770b\u5230\uff0c\u70b9\u51fb\u4e8b\u4ef6\u5148\u88ab\u7236\u5143\u7d20\u622a\u83b7\u4e86\uff0c\u4e14\u8be5\u51fd\u6570\u53ea\u5728\u4e8b\u4ef6\u6355\u83b7\u9636\u6bb5\u8d77\u4f5c\u7528\u3002\n<\/p>\n
        \n\t<\/a><\/a>\u5904\u4e8e\u76ee\u6807\u4e0e\u4e8b\u4ef6\u5192\u6ce1\u9636\u6bb5
        \n<\/h3>\n
        \n\t\u4e8b\u4ef6\u5230\u4e86\u5177\u4f53\u5143\u7d20\u65f6\uff0c\u5728\u5177\u4f53\u5143\u7d20\u4e0a\u53d1\u751f\uff0c\u5e76\u4e14\u88ab\u770b\u6210\u5192\u6ce1\u9636\u6bb5\u7684\u4e00\u90e8\u5206\u3002
        \n\u968f\u540e\uff0c\u5192\u6ce1\u9636\u6bb5\u53d1\u751f\uff0c\u4e8b\u4ef6\u5f00\u59cb\u5192\u6ce1\u3002\n<\/p>\n
        \n\t<\/a><\/a>\u963b\u6b62\u4e8b\u4ef6\u5192\u6ce1
        \n<\/h3>\n
        \n\t\u4e8b\u4ef6\u5192\u6ce1\u8fc7\u7a0b\uff0c\u662f\u53ef\u4ee5\u88ab\u963b\u6b62\u7684\u3002\u9632\u6b62\u4e8b\u4ef6\u5192\u6ce1\u800c\u5e26\u6765\u4e0d\u5fc5\u8981\u7684\u9519\u8bef\u548c\u56f0\u6270\u3002
        \n\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u662f:stopPropagation()\n<\/p>\n
        \n
        \n\t\tstopPropagation() \u65b9\u6cd5
        \n\u7ec8\u6b62\u4e8b\u4ef6\u5728\u4f20\u64ad\u8fc7\u7a0b\u7684\u6355\u83b7\u3001\u76ee\u6807\u5904\u7406\u6216\u8d77\u6ce1\u9636\u6bb5\u8fdb\u4e00\u6b65\u4f20\u64ad\u3002\u8c03\u7528\u8be5\u65b9\u6cd5\u540e\uff0c\u8be5\u8282\u70b9\u4e0a\u5904\u7406\u8be5\u4e8b\u4ef6\u7684\u5904\u7406\u7a0b\u5e8f\u5c06\u88ab\u8c03\u7528\uff0c\u4e8b\u4ef6\u4e0d\u518d\u88ab\u5206\u6d3e\u5230\u5176\u4ed6\u8282\u70b9\u3002\n\t<\/p>\n<\/blockquote>\n
        \n\t\u6211\u4eec\u5bf9button\u7684click\u4e8b\u4ef6\u505a\u4e00\u4e9b\u6539\u9020\u3002\n<\/p>\n\n\n\n
        \n
        <\/pre>\n<\/td>\n
        		\n
        \r\n<\/pre>\n
        button.addEventListener('click', function(event) {\r\n  \/\/ event\u4e3a\u4e8b\u4ef6\u5bf9\u8c61\r\n  console.log('1. You click Button');\r\n  event.stopPropagation();\r\n  console.log('Stop Propagation!');\r\n}, false);<\/pre>\n
        <\/p>\n
        \u70b9\u51fb\u540e\uff0c\u6548\u679c\u5982\u4e0b\u56fe\uff1a<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n\t
        \n\"\"<\/a>\n<\/p>\n
        \n\t\u4e0d\u96be\u770b\u51fa\uff0c\u4e8b\u4ef6\u5728\u5230\u8fbe\u5177\u4f53\u5143\u7d20\u540e\uff0c\u505c\u6b62\u4e86\u5192\u6ce1\u3002\u4f46\u4e0d\u5f71\u54cd\u7236\u5143\u7d20\u7684\u4e8b\u4ef6\u6355\u83b7\u3002\n<\/p>\n
        \n\t<\/a><\/a>\u603b\u7ed3\u4e0e\u611f\u60f3
        \n<\/h2>\n
        \n\t\u4e8b\u4ef6\u6d41\uff1a\u63cf\u8ff0\u7684\u5c31\u662f\u4ece\u9875\u9762\u4e2d\u63a5\u53d7\u4e8b\u4ef6\u7684\u987a\u5e8f\u3002\u5206\u6709\u4e8b\u4ef6\u5192\u6ce1\u4e0e\u4e8b\u4ef6\u6355\u83b7\u4e24\u79cd\u3002
        \nDOM\u4e8b\u4ef6\u6d41\u7684\u4e09\u4e2a\u9636\u6bb5\uff1a\n<\/p>\n
          \n
        1. \n\t\t\u4e8b\u4ef6\u6355\u83b7\u9636\u6bb5\n\t<\/li>\n
        2. \n\t\t\u5904\u4e8e\u76ee\u6807\u9636\u6bb5\n\t<\/li>\n
        3. \n\t\t\u4e8b\u4ef6\u5192\u6ce1\u9636\u6bb5\n\t<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
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