{"id":436,"date":"2020-02-14T14:50:10","date_gmt":"2020-02-14T06:50:10","guid":{"rendered":"https:\/\/blog.cqdefxxx.com\/?p=436"},"modified":"2020-02-14T14:50:10","modified_gmt":"2020-02-14T06:50:10","slug":"%e4%bd%9c%e7%94%a8%e5%9f%9f%e4%b8%8e%e4%bd%9c%e7%94%a8%e5%9f%9f%e9%93%be","status":"publish","type":"post","link":"https:\/\/blog.viter.top\/index.php\/2020\/02\/14\/%e4%bd%9c%e7%94%a8%e5%9f%9f%e4%b8%8e%e4%bd%9c%e7%94%a8%e5%9f%9f%e9%93%be\/","title":{"rendered":"\u4f5c\u7528\u57df\u4e0e\u4f5c\u7528\u57df\u94fe"},"content":{"rendered":"
<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <title>01_\u4f5c\u7528\u57df<\/title>\n<\/head>\n<body>\n<!--\n1. \u7406\u89e3\n  * \u5c31\u662f\u4e00\u5757\"\u5730\u76d8\", \u4e00\u4e2a\u4ee3\u7801\u6bb5\u6240\u5728\u7684\u533a\u57df\n  * \u5b83\u662f\u9759\u6001\u7684(\u76f8\u5bf9\u4e8e\u4e0a\u4e0b\u6587\u5bf9\u8c61), \u5728\u7f16\u5199\u4ee3\u7801\u65f6\u5c31\u786e\u5b9a\u4e86\n2. \u5206\u7c7b\n  * \u5168\u5c40\u4f5c\u7528\u57df\n  * \u51fd\u6570\u4f5c\u7528\u57df\n  * \u6ca1\u6709\u5757\u4f5c\u7528\u57df(ES6\u6709\u4e86)\n3. \u4f5c\u7528\n  * \u9694\u79bb\u53d8\u91cf\uff0c\u4e0d\u540c\u4f5c\u7528\u57df\u4e0b\u540c\u540d\u53d8\u91cf\u4e0d\u4f1a\u6709\u51b2\u7a81\n-->\n<script type=\"text\/javascript\">\n\/*  \/\/\u6ca1\u5757\u4f5c\u7528\u57df\n  if(true) {\n    var c = 3\n  }\n  console.log(c)*\/\n\n  var a = 10,\n    b = 20\n  function fn(x) {\n    var a = 100,\n      c = 300;\n    console.log('fn()', a, b, c, x)\n    function bar(x) {\n      var a = 1000,\n        d = 400\n      console.log('bar()', a, b, c, d, x)\n    }\n\n    bar(100)\n    bar(200)\n  }\n  fn(10)\n<\/script>\n<\/body>\n<\/html><\/code><\/pre>\n
<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <title>02_\u4f5c\u7528\u57df\u4e0e\u6267\u884c\u4e0a\u4e0b\u6587<\/title>\n<\/head>\n<body>\n<!--\n1. \u533a\u522b1\n  * \u5168\u5c40\u4f5c\u7528\u57df\u4e4b\u5916\uff0c\u6bcf\u4e2a\u51fd\u6570\u90fd\u4f1a\u521b\u5efa\u81ea\u5df1\u7684\u4f5c\u7528\u57df\uff0c\u4f5c\u7528\u57df\u5728\u51fd\u6570\u5b9a\u4e49\u65f6\u5c31\u5df2\u7ecf\u786e\u5b9a\u4e86\u3002\u800c\u4e0d\u662f\u5728\u51fd\u6570\u8c03\u7528\u65f6\n  * \u5168\u5c40\u6267\u884c\u4e0a\u4e0b\u6587\u73af\u5883\u662f\u5728\u5168\u5c40\u4f5c\u7528\u57df\u786e\u5b9a\u4e4b\u540e, js\u4ee3\u7801\u9a6c\u4e0a\u6267\u884c\u4e4b\u524d\u521b\u5efa\n  * \u51fd\u6570\u6267\u884c\u4e0a\u4e0b\u6587\u662f\u5728\u8c03\u7528\u51fd\u6570\u65f6, \u51fd\u6570\u4f53\u4ee3\u7801\u6267\u884c\u4e4b\u524d\u521b\u5efa\n2. \u533a\u522b2\n  * \u4f5c\u7528\u57df\u662f\u9759\u6001\u7684, \u53ea\u8981\u51fd\u6570\u5b9a\u4e49\u597d\u4e86\u5c31\u4e00\u76f4\u5b58\u5728, \u4e14\u4e0d\u4f1a\u518d\u53d8\u5316\n  * \u6267\u884c\u4e0a\u4e0b\u6587\u662f\u52a8\u6001\u7684, \u8c03\u7528\u51fd\u6570\u65f6\u521b\u5efa, \u51fd\u6570\u8c03\u7528\u7ed3\u675f\u65f6\u5c31\u4f1a\u81ea\u52a8\u91ca\u653e\n3. \u8054\u7cfb\n  * \u6267\u884c\u4e0a\u4e0b\u6587(\u5bf9\u8c61)\u662f\u4ece\u5c5e\u4e8e\u6240\u5728\u7684\u4f5c\u7528\u57df\n  * \u5168\u5c40\u4e0a\u4e0b\u6587\u73af\u5883==>\u5168\u5c40\u4f5c\u7528\u57df\n  * \u51fd\u6570\u4e0a\u4e0b\u6587\u73af\u5883==>\u5bf9\u5e94\u7684\u51fd\u6570\u4f7f\u7528\u57df\n-->\n<script type=\"text\/javascript\">\n  var a = 10,\n    b = 20\n  function fn(x) {\n    var a = 100,\n      c = 300;\n    console.log('fn()', a, b, c, x)\n    function bar(x) {\n      var a = 1000,\n        d = 400\n      console.log('bar()', a, b, c, d, x)\n    }\n\n    bar(100)\n    bar(200)\n  }\n  fn(10)\n<\/script>\n<\/body>\n<\/html><\/code><\/pre>\n
<!DOCTYPE html>\n<html lang=\"en\">\n<head>\n  <meta charset=\"UTF-8\">\n  <title>03_\u4f5c\u7528\u57df\u94fe<\/title>\n<\/head>\n<body>\n<!--\n1. \u7406\u89e3\n  * \u591a\u4e2a\u4e0a\u4e0b\u7ea7\u5173\u7cfb\u7684\u4f5c\u7528\u57df\u5f62\u6210\u7684\u94fe, \u5b83\u7684\u65b9\u5411\u662f\u4ece\u4e0b\u5411\u4e0a\u7684(\u4ece\u5185\u5230\u5916)\n  * \u67e5\u627e\u53d8\u91cf\u65f6\u5c31\u662f\u6cbf\u7740\u4f5c\u7528\u57df\u94fe\u6765\u67e5\u627e\u7684\n2. \u67e5\u627e\u4e00\u4e2a\u53d8\u91cf\u7684\u67e5\u627e\u89c4\u5219\n  * \u5728\u5f53\u524d\u4f5c\u7528\u57df\u4e0b\u7684\u6267\u884c\u4e0a\u4e0b\u6587\u4e2d\u67e5\u627e\u5bf9\u5e94\u7684\u5c5e\u6027, \u5982\u679c\u6709\u76f4\u63a5\u8fd4\u56de, \u5426\u5219\u8fdb\u51652\n  * \u5728\u4e0a\u4e00\u7ea7\u4f5c\u7528\u57df\u7684\u6267\u884c\u4e0a\u4e0b\u6587\u4e2d\u67e5\u627e\u5bf9\u5e94\u7684\u5c5e\u6027, \u5982\u679c\u6709\u76f4\u63a5\u8fd4\u56de, \u5426\u5219\u8fdb\u51653\n  * \u518d\u6b21\u6267\u884c2\u7684\u76f8\u540c\u64cd\u4f5c, \u76f4\u5230\u5168\u5c40\u4f5c\u7528\u57df, \u5982\u679c\u8fd8\u627e\u4e0d\u5230\u5c31\u629b\u51fa\u627e\u4e0d\u5230\u7684\u5f02\u5e38\n-->\n<script type=\"text\/javascript\">\n  var a = 1\n  function fn1() {\n    var b = 2\n    function fn2() {\n      var c = 3\n      console.log(c)\n      console.log(b)\n      console.log(a)\n      console.log(d)\n    }\n    fn2()\n  }\n  fn1()\n<\/script>\n\n<\/body>\n<\/html><\/code><\/pre>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
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