{"id":2213,"date":"2017-05-03T13:23:00","date_gmt":"2017-05-03T05:23:00","guid":{"rendered":"http:\/\/www.qdabc.cn\/?p=2213"},"modified":"2017-05-03T13:23:00","modified_gmt":"2017-05-03T05:23:00","slug":"vue%ef%bc%9a%e5%ae%9e%e7%8e%b0%e5%8f%8c%e5%90%91%e6%95%b0%e6%8d%ae%e7%bb%91%e5%ae%9a","status":"publish","type":"post","link":"http:\/\/www.qdabc.cn\/?p=2213","title":{"rendered":"Vue\uff1a\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u7ed1\u5b9a"},"content":{"rendered":"<p>Vue\u662f\u5982\u4f55\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u7ed1\u5b9a\u7684\u5462\uff1f\u7b54\u6848\u662f\u524d\u7aef\u6570\u636e\u52ab\u6301\u3002\u5176\u901a\u8fc7<code>Object.defineProperty()<\/code>\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6e<code>getter<\/code>\u548c<code>setter<\/code>\u51fd\u6570\uff0c\u5728setter\u51fd\u6570\u4e2d\uff0c\u5c31\u53ef\u4ee5\u76d1\u542c\u5230\u6570\u636e\u7684\u53d8\u5316\uff0c\u4ece\u800c\u66f4\u65b0\u7ed1\u5b9a\u7684\u5143\u7d20\u7684\u503c\u3002<\/p>\n<h3 id=\"\u5b9e\u73b0\u5bf9\u8c61\u5c5e\u6027\u53d8\u5316\u7ed1\u5b9a\u5230ui\"><a name=\"t2\"><\/a>\u5b9e\u73b0\u5bf9\u8c61\u5c5e\u6027\u53d8\u5316\u7ed1\u5b9a\u5230UI<\/h3>\n<p>\u5927\u6982\u7684\u601d\u8def\u662f\uff1a<br \/>\n1. \u786e\u5b9a\u7ed1\u5b9a\u7684\u6570\u636e\uff0c\u4f7f\u7528Object.defineProperty()\u5bf9\u5176\u6570\u636e\u53d8\u5316\u8fdb\u884c\u76d1\u542c\uff08\u5bf9\u5e94defineGetAndSet\uff09<br \/>\n2. \u4e00\u65e6\u6570\u636e\u53d1\u751f\u6539\u52a8\uff0c\u4f1a\u89e6\u53d1setter\u51fd\u6570\u3002\u56e0\u6b64\u5728setter\u51fd\u6570\u5185\u8981\u8c03\u7528\u56de\u8c03\u51fd\u6570\u89e6\u53d1\u7ed1\u5b9a\u5143\u7d20\u7684\u66f4\u65b0\u3002<br \/>\n3. \u7ed1\u5b9a\u5143\u7d20\u7684\u66f4\u65b0\u5c31\u662f\u904d\u5386\u6240\u6709\u7684\u7ed1\u5b9a\u5143\u7d20\uff0c\u901a\u8fc7\u7ed1\u5b9a\u5c5e\u6027\u7684\u503c\u786e\u5b9a\u51fd\u6570\u7684\u8c03\u7528\uff0c\u5e76\u4f20\u5165\u4fee\u6539\u540e\u7684\u503c\u3002\uff08\u5bf9\u5e94scan\uff09<\/p>\n<h3 id=\"\u5b9e\u73b0ui\u53d8\u5316\u7ed1\u5b9a\u5230\u5bf9\u8c61\u5c5e\u6027\"><a name=\"t3\"><\/a>\u5b9e\u73b0UI\u53d8\u5316\u7ed1\u5b9a\u5230\u5bf9\u8c61\u5c5e\u6027<\/h3>\n<p>\u8fd9\u4e2a\u5c31\u6bd4\u8f83\u7b80\u5355\u4e86\uff0c\u56e0\u4e3aUI\u7684\u6539\u53d8\u4f1a\u89e6\u53d1\u4e00\u4e9b\u4e8b\u4ef6\uff0c\u6bd4\u5982keyup\u3002\u901a\u8fc7\u76d1\u542c\u4e8b\u4ef6\u6765\u5b9e\u73b0\u6570\u636e\u7684\u6539\u53d8\u3002\u800c\u4e0a\u9762\u8bf4\u4e86\uff0c\u6570\u636e\u7684\u6539\u53d8\u53c8\u4f1a\u5bfc\u81f4\u7ed1\u5b9a\u5176\u503c\u7684\u5143\u7d20\u7684UI\u6539\u53d8\u3002<\/p>\n<h3><a name=\"t4\"><\/a>\u5b9e\u73b0<\/h3>\n<pre>var data = {\r\n  value: 'hello world!'\r\n}\r\nvar bindValue;\r\n\/\/\u786e\u5b9a\u7ed1\u5b9a\u7684\u5143\u7d20\r\nvar bindelems = [document.getElementById('p'), document.getElementById('input')];\r\n\/\/\u4fee\u6539\u7ed1\u5b9a\u5143\u7d20\u7684\u503c\u7684\u65b9\u6cd5\r\nvar command = {\r\n  text: function(str) {\r\n    this.innerHTML = str;\r\n  },\r\n  value: function(str) {\r\n    this.value = str;\r\n  }\r\n};\r\n\/\/\u904d\u5386\u7ed1\u5b9a\u5143\u7d20\u4fee\u6539\u5176\u503c\r\nvar scan = function() {\r\n  console.log('in scan');\r\n  for(var i = 0; i &lt; bindelems.length; i++) {\r\n    var elem = bindelems[i];\r\n    console.log('elem',elem);\r\n    for(var j = 0; j &lt; elem.attributes.length; j++) {\r\n      var attr = elem.attributes[j];\r\n      if(attr.nodeName.indexOf('q-')&gt;=0) {\r\n        command[attr.nodeName.slice(2)].call(elem, data[attr.nodeValue]);\r\n      }\r\n    }\r\n  }\r\n}\r\n\/\/\u8bbe\u7f6e\u52ab\u6301\r\nvar defineGetAndSet = function(obj, propname) {\r\n  Object.defineProperty(obj, propname, {\r\n    get: function() {\r\n      return bindValue;\r\n    },\r\n    set: function(value){\r\n      bindValue = value;\r\n      scan();\r\n    },\r\n    enumerable: true,\r\n    configurable: true\r\n  })\r\n} \r\n\/\/\u4e00\u5f00\u59cb\u5148\u521d\u59cb\u5316\uff0c\u4f7f\u6240\u6709\u7ed1\u5b9a\u7684\u5143\u7d20\u503c\u4e3a\u521d\u59cb\u503c\r\nscan();\r\n\/\/\u8bbe\u7f6e\u9700\u8981\u88ab\u52ab\u6301\u7684\u5143\u7d20\r\ndefineGetAndSet(data, 'value');\r\n\/\/\u76d1\u542cUI\u53d8\u5316\r\nbindelems[1].addEventListener('keyup', function(e) {\r\n  data.value = e.target.value;\r\n});\r\nsetTimeout(function() {\r\n  data.value = 'change';\r\n}, 1000);<\/pre>\n<p class=\"post-copyright\">\u6b22\u8fce\u5206\u4eab\u672c\u6587\uff0c\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u51fa\u5904\uff1a<a href=\"http:\/\/www.qdabc.cn\">\u524d\u7aefABC<\/a> &raquo; <a href=\"http:\/\/www.qdabc.cn\/?p=2213\">Vue\uff1a\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u7ed1\u5b9a<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Vue\u662f\u5982\u4f55\u5b9e\u73b0\u53cc\u5411\u6570\u636e\u7ed1\u5b9a\u7684\u5462\uff1f\u7b54\u6848\u662f\u524d\u7aef\u6570\u636e\u52ab\u6301\u3002\u5176\u901a\u8fc7Object.defineProperty()\u65b9\u6cd5\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u53ef\u4ee5\u8bbe\u7f6egetter\u548csetter\u51fd\u6570\uff0c\u5728setter\u51fd\u6570\u4e2d\uff0c\u5c31\u53ef\u4ee5\u76d1\u542c\u5230\u6570\u636e\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[186],"tags":[26,286],"_links":{"self":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2213"}],"collection":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2213"}],"version-history":[{"count":1,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2213\/revisions"}],"predecessor-version":[{"id":2214,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=\/wp\/v2\/posts\/2213\/revisions\/2214"}],"wp:attachment":[{"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2213"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.qdabc.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}