\n \u521b\u5efa\u7a7a\u5bf9\u8c61\u6709\u4e24\u79cd\u8bed\u6cd5:\n <\/div>\n
\u901a\u8fc7\u4f7f\u7528\u5bf9\u8c61\u5b57\u9762\u91cf<\/span>
\n \u901a\u8fc7\u4f7f\u7528\u5bf9\u8c61\u6784\u9020\u51fd\u6570<\/span> <\/p>\n\n
var <\/span>user = {}; \/\/ 'object literal'<\/span> syntax<\/span>\nvar <\/span>name = new <\/span>Object(); \/\/'object constructor'<\/span> syntax<\/span><\/pre>\n<\/code>\n <\/div>\n
ES6 \u4e2d\u7684\u5bf9\u8c61\u5b57\u9762\u91cf\u8bed\u6cd5\u6269\u5c55<\/h2>\n\n \u4e0e\u539f\u59cb\u6570\u636e\u7c7b\u578b\u7c7b\u4f3c\uff0c\u5bf9\u8c61\u4e5f\u6709\u5b57\u9762\u91cf\u8bed\u6cd5\u3002\u5bf9\u8c61\u5b57\u9762\u91cf\u662f\u5728 JavaScript \u4e2d\u521b\u5efa\u5bf9\u8c61\u7684\u5e7f\u6cdb\u4f7f\u7528\u7684\u6a21\u5f0f\u4e4b\u4e00\u3002\n <\/div>\n
\n ES6 \u4f7f\u5bf9\u8c61\u5b57\u9762\u91cf\u66f4\u52a0\u901a\u8fc7\u4ee5\u4e0d\u540c\u65b9\u5f0f\u6269\u5c55\u8bed\u6cd5\uff0c\u7b80\u6d01\u800c\u5065\u58ee\u3002\n <\/div>\n
\n \u8ba9\u6211\u4eec\u770b\u770b\u5bf9\u8c61\u5c5e\u6027\u521d\u59cb\u5316\u5668\u7684\u7b80\u5199\u3002\n <\/div>\n
\u5bf9\u8c61\u5c5e\u6027\u521d\u59cb\u5316\u5668<\/h3>\n\n \u5728 ES6 \u4e4b\u524d\uff0c\u5bf9\u8c61\u5b57\u9762\u91cf\u662f\u540d\u79f0-\u503c\u5bf9\u7684\u96c6\u5408\u3002\u4f8b\u5982\uff0c\n <\/div>\n
\n \u5728 ES5 \u4e2d\n <\/div>\n
\n
function user(name, division) {\n return <\/span>{\n name: name,\n divison: division\n };\n}<\/pre>\n<\/code>\n <\/div>\n
\n \u4e0a\u8ff0\u51fd\u6570user()\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u5206\u522b\u662fname\u548cdivision\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5177\u6709\u4e24\u4e2a\u5c5e\u6027\u7684\u65b0\u5bf9\u8c61\u5b57\u9762\u91cf\u540d\u79f0\u548c\u90e8\u95e8\u3002\u5c5e\u6027name \u548cdivision \u53d6\u51fd\u6570\u53c2\u6570\u7684\u503c\u3002\n <\/div>\n
\n \u4e0a\u8ff0\u8bed\u6cd5\u770b\u8d77\u6765\u91cd\u590d\uff0c\u56e0\u4e3aname \u548cdivision \u5728\u5c5e\u6027\u7684\u952e\u548c\u503c\u4e2d\u63d0\u5230\u4e86\u4e24\u6b21\u3002\n <\/div>\n
\n ES6 \u4e2d\u7684\u8bed\u6cd5\u6d88\u9664\u4e86\u5bf9\u8c61\u5c5e\u6027\u4e0e\u540d\u79f0\u76f8\u540c\u65f6\u7684\u91cd\u590d\u5c40\u90e8\u53d8\u91cf\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u91cd\u5199\u4e0a\u9762\u7684 user() ES6 \u4e2d\u7684\u51fd\u6570\u6765\u7406\u89e3\u8fd9\u4e00\u70b9\u3002\n <\/div>\n
\n \u5728 ES6 \u4e2d\n <\/div>\n
\n
function user(name, division) {\n return <\/span>{\n name,\n divison\n };\n}<\/pre>\n<\/code>\n <\/div>\n
\n \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u7247\u6bb5\u4e2d\uff0cJavaScript \u5f15\u64ce\u5c06 name \u548c division \u53c2\u6570\u7684\u503c\u5206\u914d\u7ed9 name \u548c division \u5c5e\u6027\u3002\n <\/div>\n
\n \u540c\u6837\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u5c40\u90e8\u53d8\u91cf\u6784\u9020\u4e00\u4e2a\u5bf9\u8c61\u5b57\u9762\u91cf\uff0c\u5982\u4e0b\u4f8b\u6240\u793a:\n <\/div>\n
\n \u793a\u4f8b\n <\/div>\n
\n
let uname = 'Anil'<\/span>,\n udivision = 'First'<\/span>;\n \nlet user = {\n uname,\n udivision\n};\nconsole.log<\/span>(user.uname);\nconsole.log<\/span>(user.udivision);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
Anil\nFirst<\/pre>\n<\/code>\n <\/div>\n
\n \u901a\u8fc7\u4f7f\u7528\u8fd9\u79cd\u901f\u8bb0\u8bed\u6cd5\uff0cJavaScript \u5f15\u64ce\u5728\u4f5c\u7528\u57df\u4e2d\u67e5\u627e\u540c\u540d\u53d8\u91cf\u3002\u5982\u679c\u627e\u5230\uff0c\u5219\u5c06\u8be5\u53d8\u91cf\u7684\u503c\u5206\u914d\u7ed9\u8be5\u5c5e\u6027\u3002\u4f46\u662f\u5982\u679c\u627e\u4e0d\u5230\uff0c\u5c31\u4f1a\u51fa\u73b0\u5f15\u7528\u9519\u8bef\u3002\n <\/div>\n
\u8ba1\u7b97\u5c5e\u6027\u540d<\/h3>\n\n \u5728ES6\u4e4b\u524d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u65b9\u62ec\u53f7[] \u542f\u7528\u5bf9\u8c61\u5c5e\u6027\u7684\u8ba1\u7b97\u5c5e\u6027\u540d\u79f0\u3002\u65b9\u62ec\u53f7\u8868\u793a\u6cd5\u5141\u8bb8\u6211\u4eec\u4f7f\u7528\u53d8\u91cf\u548c\u5b57\u7b26\u4e32\u6587\u5b57\u4f5c\u4e3a\u5c5e\u6027\u7684\u540d\u79f0\u3002\n <\/div>\n
\n ES6 \u5f15\u5165\u4e86\u4e00\u4e2a\u65b0\u7279\u6027 '\u8ba1\u7b97\u5c5e\u6027\u540d\u79f0'\uff0c\u5b83\u662f\u5bf9\u8c61\u5b57\u9762\u91cf\u8bed\u6cd5\u7684\u4e00\u90e8\u5206\uff0c\u5b83\u4f7f\u7528\u65b9\u62ec\u53f7 [] \u8868\u793a\u6cd5.\u5b83\u5141\u8bb8\u6211\u4eec\u5c06\u4e00\u4e2a\u8868\u8fbe\u5f0f\u653e\u5728\u65b9\u62ec\u53f7 [] \u4e2d\uff0c\u8be5\u8868\u8fbe\u5f0f\u5c06\u88ab\u8ba1\u7b97\u5e76\u7528\u4f5c\u5c5e\u6027\u7684\u540d\u79f0\u3002\n <\/div>\n
\n \u8ba9\u6211\u4eec\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u5185\u5bb9\u6765\u7406\u89e3\u8ba1\u7b97\u7684\u5c5e\u6027\u540d\u79f0\u793a\u4f8b:\n <\/div>\n
\n \u5728 ES5 \u4e2d\n <\/div>\n
\n
var <\/span>emp = {\n id : 101,\n name : 'Amit'<\/span>\n}\nvar <\/span>department = 'dep_name'<\/span>;\nemp[department]='Sales'<\/span>;\nconsole.log<\/span>(emp);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
{ id: 101, name: 'Amit'<\/span>, dep_name: 'Sales'<\/span> }<\/pre>\n<\/code>\n <\/div>\n
\n \u5728 ES6 \u4e2d\n <\/div>\n
\n
var <\/span>department = 'dep_name'<\/span>;\nvar <\/span>emp = {\n id : 102,\n name : 'Anil'<\/span>,\n [department]:'Production'<\/span>\n}\nconsole.log<\/span>(emp);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
{ id: 102, name: 'Anil'<\/span>, dep_name: 'Production'<\/span> }<\/pre>\n<\/code>\n <\/div>\n
\u7b80\u6d01\u7684\u65b9\u6cd5\u8bed\u6cd5<\/h3>\n\n \u5728 ES6 \u4e4b\u524d\uff0c\u4e3a\u5bf9\u8c61\u5b57\u9762\u91cf\u5b9a\u4e49\u65b9\u6cd5\uff0c\u6211\u4eec\u5fc5\u987b\u6307\u5b9a\u5b8c\u6574\u51fd\u6570\u7684\u540d\u79f0\u548c\u5b9a\u4e49\uff0c\u5982\u4e0b\u4f8b\u6240\u793a:\n <\/div>\n
\n \u793a\u4f8b\n <\/div>\n
\n
let user = {\n firstName : \"Sunil\"<\/span>,\n lastName : \"Kumar\"<\/span>,\n fullName : function(){\n return <\/span>this<\/span>.firstname + \" \"<\/span> + this<\/span>.lastName;\n }\n};<\/pre>\n<\/code>\n <\/div>\n
\n ES6 \u4f7f\u7528\u901f\u8bb0\u8bed\u6cd5\uff0c\u4e5f\u79f0\u4e3a\u7b80\u6d01\u65b9\u6cd5\u8bed\u6cd5\uff0c\u901a\u8fc7\u5220\u9664\u5192\u53f7(:) \u548cfunction \u5173\u952e\u5b57\u3002\n <\/div>\n
\n \u8ba9\u6211\u4eec\u901a\u8fc7\u91cd\u5199\u5bf9\u8c61 user \u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\u4f7f\u7528\u6b64\u8bed\u6cd5\u3002\n <\/div>\n
\n
let user = {\n firstName : \"Sunil\"<\/span>,\n lastName : \"Kumar\"<\/span>,\n fullName(){\n return <\/span>this<\/span>.firstname + \" \"<\/span> + this<\/span>.lastName;\n }\n};<\/pre>\n<\/code>\n <\/div>\n
\u5728 ES6 \u4e2d\u5408\u5e76\u5bf9\u8c61<\/h2>\n\n \u5728 ES6 \u4e2d\u53ef\u4ee5\u4f7f\u7528\u4e24\u79cd\u65b9\u6cd5\u5408\u5e76\u4e24\u4e2a JavaScript \u5bf9\u8c61\uff0c\u5982\u4e0b\u6240\u793a:\n <\/div>\n
Object.assign() \u65b9\u6cd5<\/span>
\n \u5bf9\u8c61\u4f20\u64ad\u8bed\u6cd5\u65b9\u6cd5<\/span> <\/p>\n\n \u8ba9\u6211\u4eec\u8bd5\u7740\u7406\u89e3\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u3002\n <\/div>\n
\u901a\u8fc7\u4f7f\u7528 Object.assign() \u65b9\u6cd5<\/h3>\n\n \u8be5\u65b9\u6cd5\u7528\u4e8e\u590d\u5236\u4ece\u4e00\u4e2a\u6216\u591a\u4e2a\u6e90\u5bf9\u8c61\u5230\u76ee\u6807\u5bf9\u8c61\u7684\u503c\u548c\u5c5e\u6027\u3002\u5b83\u8fd4\u56de\u76ee\u6807\u5bf9\u8c61\uff0c\u5305\u62ec\u4ece\u76ee\u6807\u5bf9\u8c61\u590d\u5236\u7684\u5c5e\u6027\u548c\u503c\u3002\n <\/div>\n
\n \u8bed\u6cd5\n <\/div>\n
\n
Object.assign<\/span>(target, sources) <\/pre>\n<\/code>\n <\/div>\n
\n \u793a\u4f8b\n <\/div>\n
\n
var <\/span>obj1 = {1 : \"Hello\"<\/span>, 2: \"World\"<\/span>}; \n var <\/span>obj2 = { 3 : \"Welcome\"<\/span>, 4: \"to\"<\/span>};\n var <\/span>obj3 = { 5 : \"lidihuo\"<\/span>} \n \n \/\/ Using Object.assign<\/span>() <\/span>\n var <\/span>final_obj = Object.assign<\/span>(obj1, obj2, obj3); \n console.log<\/span>(final_obj);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
{\n '1'<\/span>: 'Hello'<\/span>,\n '2'<\/span>: 'World'<\/span>,\n '3'<\/span>: 'Welcome'<\/span>,\n '4'<\/span>: 'to'<\/span>,\n '5'<\/span>: 'lidihuo'<\/span>\n}<\/pre>\n<\/code>\n <\/div>\n
\u5bf9\u8c61\u514b\u9686<\/h3>\n\n \u514b\u9686\u662f\u5c06\u5bf9\u8c61\u4ece\u4e00\u4e2a\u53d8\u91cf\u590d\u5236\u5230\u53e6\u4e00\u4e2a\u53d8\u91cf\u7684\u8fc7\u7a0b\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528object.assign() \u65b9\u6cd5\u6765\u514b\u9686\u4e00\u4e2a\u5bf9\u8c61\u3002\n <\/div>\n
\n \u8ba9\u6211\u4eec\u8bd5\u7740\u7528\u4e0b\u9762\u7684\u4f8b\u5b50\u6765\u7406\u89e3\u5b83:\n <\/div>\n
\n \u793a\u4f8b\n <\/div>\n
\n
let obj1 = {\n name: 'Anil'<\/span>,\n age: 22\n };\n let cloneobj = Object.assign<\/span>({}, obj1);\n \n cloneobj.age = 32;\n \n console.log<\/span>(obj1);\n console.log<\/span>(cloneobj);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
{ name: 'Anil'<\/span><\/span>, age: 22 }\n{ name: 'Anil', age: 32 }<\/pre>\n<\/code>\n <\/div>\n
\u901a\u8fc7\u4f7f\u7528\u5bf9\u8c61\u6269\u5c55\u8bed\u6cd5<\/h3>\n\n \u5e7f\u6cdb\u7528\u4e8e\u9700\u8981\u591a\u4e2a\u503c\u7684\u53d8\u91cf\u6570\u7ec4\u4e2d\u3002\u7531\u4e8e JavaScript \u4e2d\u7684\u5bf9\u8c61\u662f\u952e\u503c\u5bf9\u5b9e\u4f53\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6269\u5c55\u8fd0\u7b97\u7b26\u5c06\u5b83\u4eec\u5408\u5e76\u4e3a\u4e00\u4e2a\u3002\n <\/div>\n
\n \u8bed\u6cd5\n <\/div>\n
\n
var <\/span>new_obj = [...obj1, ...obj2, ...] <\/pre>\n<\/code>\n <\/div>\n
\n \u793a\u4f8b\n <\/div>\n
\n
var <\/span>obj1 = {1 : \"Hello\"<\/span>, 2: \"World\"<\/span>};\nvar <\/span>obj2 = { 3 : \"Welcome\"<\/span>, 4: \"to\"<\/span>};\nvar <\/span>obj3 = { 5 : \"lidihuo\"<\/span>}\nvar <\/span>final_obj = {...obj1, ...obj2, ...obj3};\nconsole.log<\/span>(final_obj);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
{\n '1'<\/span>: 'Hello'<\/span>,\n '2'<\/span>: 'World'<\/span>,\n '3'<\/span>: 'Welcome'<\/span>,\n '4'<\/span>: 'to'<\/span>,\n '5'<\/span>: 'lidihuo'<\/span>\n}<\/pre>\n<\/code>\n <\/div>\n
\u5220\u9664\u5c5e\u6027<\/h3>\n\n \u53ef\u4ee5\u4f7f\u7528 delete \u8fd0\u7b97\u7b26\u6765\u79fb\u9664\u6216\u5220\u9664\u5c5e\u6027\u3002\u8ba9\u6211\u4eec\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u793a\u4f8b\u6765\u4e86\u89e3\u5982\u4f55\u5220\u9664\u5c5e\u6027\u3002\n <\/div>\n
\n \u793a\u4f8b\n <\/div>\n
\n
var <\/span>obj = new <\/span>Object; \nobj.a = 50; \nobj.b = 200; \n \ndelete obj.a; \nconsole.log <\/span>(obj.a);<\/pre>\n<\/code>\n <\/div>\n
\n \u8f93\u51fa\n <\/div>\n
\n
undefined<\/pre>\n<\/code>\n <\/div>\n
\u5bf9\u8c61\u89e3\u6784<\/h2>\n\n \u5b83\u7c7b\u4f3c\u4e8e\u6570\u7ec4\u89e3\u6784\uff0c\u53ea\u662f\u4e0d\u662f\u4ece\u6570\u7ec4\u4e2d\u62c9\u51fa\u503c\uff0c\u800c\u662f\u53ef\u4ee5\u62c9\u51fa\u5c5e\u6027(\u6216\u952e)\u53ca\u5176\u5bf9\u5e94\u7684\u503c\u6765\u81ea\u4e00\u4e2a\u5bf9\u8c61\u3002\n <\/div>\n
\n \u5728\u89e3\u6784\u5bf9\u8c61\u65f6\uff0c\u6211\u4eec\u4f7f\u7528\u952e\u4f5c\u4e3a\u53d8\u91cf\u7684\u540d\u79f0\u3002\u53d8\u91cf\u540d\u79f0\u5fc5\u987b\u4e0e\u5bf9\u8c61\u7684\u5c5e\u6027(\u6216\u952e)\u540d\u79f0\u5339\u914d\u3002\u5982\u679c\u4e0d\u5339\u914d\uff0c\u5219\u5b83\u4f1a\u6536\u5230\u4e00\u4e2a undefined \u503c\u3002\u8fd9\u5c31\u662f JavaScript \u77e5\u9053\u6211\u4eec\u8981\u5206\u914d\u5bf9\u8c61\u7684\u54ea\u4e2a\u5c5e\u6027\u7684\u65b9\u5f0f\u3002\n <\/div>\n
\n \u8981\u4e86\u89e3\u6709\u5173\u5bf9\u8c61\u89e3\u6784\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u5355\u51fb\u6b64\u94fe\u63a5 ES6 \u5bf9\u8c61\u89e3\u6784\u3002\n <\/div>\n
<\/body>
\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"ES6 \u5bf9\u8c61zh-cn","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[161],"tags":[],"class_list":["post-1921","post","type-post","status-publish","format-standard","hentry","category-es6jc"],"_links":{"self":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/1921"}],"collection":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/comments?post=1921"}],"version-history":[{"count":0,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/posts\/1921\/revisions"}],"wp:attachment":[{"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/media?parent=1921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/categories?post=1921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bianchenghao6.com\/wp-json\/wp\/v2\/tags?post=1921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}