{"id":133242,"date":"2025-01-16T23:21:54","date_gmt":"2025-01-16T17:21:54","guid":{"rendered":"http:\/\/rcl-radio.ru\/?p=133242"},"modified":"2025-01-16T23:21:54","modified_gmt":"2025-01-16T17:21:54","slug":"%d1%81%d1%82%d1%80%d0%be%d0%ba%d0%be%d0%b2%d1%8b%d0%b5-%d0%be%d0%bf%d0%b5%d1%80%d0%b0%d1%82%d0%be%d1%80%d1%8b-javascript","status":"publish","type":"post","link":"http:\/\/rcl-radio.ru\/?p=133242","title":{"rendered":"\u0421\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b JavaScript"},"content":{"rendered":"

\u0412 JavaScript \u0441\u0442\u0440\u043e\u043a\u0438 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 \u0438 \u043c\u0435\u0442\u043e\u0434\u043e\u0432. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442 \u043a\u043e\u043d\u043a\u0430\u0442\u0435\u043d\u0430\u0446\u0438\u044e \u0438 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0441\u0442\u0440\u043e\u043a. \u0420\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0438\u0445 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u0435\u0435.<\/p>\n

\u041a\u043e\u043d\u043a\u0430\u0442\u0435\u043d\u0430\u0446\u0438\u044f \u0441\u0442\u0440\u043e\u043a<\/strong>
\n\u041a\u043e\u043d\u043a\u0430\u0442\u0435\u043d\u0430\u0446\u0438\u044f<\/strong> \u2014 \u044d\u0442\u043e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f \u0434\u0432\u0443\u0445 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0441\u0442\u0440\u043e\u043a \u0432 \u043e\u0434\u043d\u0443 \u0441\u0442\u0440\u043e\u043a\u0443. \u0412 JavaScript \u043e\u043d\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430 + \u0438\u043b\u0438 \u043c\u0435\u0442\u043e\u0434\u0430 concat<\/span>(<\/span>)<\/span>.<\/p>\n

\u041e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 +<\/strong><\/p>\n

let str1 = «Hello»<\/span>;
\nlet str2 = «World»<\/span>;
\nlet result = str1 + » «<\/span> + str2;
\nconsole.log<\/span>(<\/span>result)<\/span>; \/\/ Hello World<\/span><\/p><\/blockquote>\n

\u041c\u0435\u0442\u043e\u0434 concat<\/span>(<\/span>)<\/span><\/strong>
\n\u041c\u0435\u0442\u043e\u0434 concat<\/span>(<\/span>)<\/span> \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u044f\u0435\u0442 \u0434\u0432\u0435 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0441\u0442\u0440\u043e\u043a \u0438 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043d\u043e\u0432\u0443\u044e \u0441\u0442\u0440\u043e\u043a\u0443.<\/p>\n

let<\/span> str1 = «Hello»<\/span>;
\nlet str2 = «World»<\/span>;
\nlet result = str1.concat<\/span>(<\/span>» «<\/span>, str2)<\/span>;
\nconsole.log<\/span>(<\/span>result)<\/span>; \/\/ Hello World<\/span><\/p><\/blockquote>\n

\u0421\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0441\u0442\u0440\u043e\u043a<\/strong>
\n\u0421\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0441\u0442\u0440\u043e\u043a \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f ==, ===, !<\/span>=, !<\/span>==, <<\/span>, <<\/span>=, ><\/span>, ><\/span>=.<\/p>\n

\u0420\u0430\u0432\u0435\u043d\u0441\u0442\u0432\u043e \u0441\u0442\u0440\u043e\u043a<\/strong><\/p>\n

let str1 = «apple»<\/span>;
\nlet str2 = «banana»<\/span>;<\/p>\n

console.log<\/span>(<\/span>str1 == str2)<\/span>; \/\/ false<\/span>
\nconsole.log<\/span>(<\/span>str1 !<\/span>= str2)<\/span>; \/\/ true<\/span>
\nconsole.log<\/span>(<\/span>str1 === str2)<\/span>; \/\/ false<\/span>
\nconsole.log<\/span>(<\/span>str1 !<\/span>== str2)<\/span>; \/\/ true<\/span><\/p><\/blockquote>\n

\u041b\u0435\u043a\u0441\u0438\u043a\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435<\/strong>
\n\u041b\u0435\u043a\u0441\u0438\u043a\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u0438 \u0441\u0442\u0440\u043e\u043a\u0438 \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043f\u043e \u0438\u0445 \u0441\u0438\u043c\u0432\u043e\u043b\u0430\u043c \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0441 \u0438\u0445 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u043a\u043e\u0439 Unicode.<\/p>\n

let<\/span> str1 = «apple»<\/span>;
\nlet str2 = «banana»<\/span>;<\/p>\n

console.log<\/span>(<\/span>str1 <<\/span> str2)<\/span>; \/\/ true<\/span>
\nconsole.log<\/span>(<\/span>str1 <<\/span>= str2)<\/span>; \/\/ true<\/span>
\nconsole.log<\/span>(<\/span>str1 ><\/span> str2)<\/span>; \/\/ false<\/span>
\nconsole.log<\/span>(<\/span>str1 ><\/span>= str2)<\/span>; \/\/ false<\/span><\/p><\/blockquote>\n

\u0414\u0440\u0443\u0433\u0438\u0435 \u043f\u043e\u043b\u0435\u0437\u043d\u044b\u0435 \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b<\/strong>
\n\u041f\u043e\u043c\u0438\u043c\u043e \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432, \u0432 JavaScript \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u043c\u043d\u043e\u0433\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441\u043e \u0441\u0442\u0440\u043e\u043a\u0430\u043c\u0438. \u0412\u043e\u0442 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0438\u0437 \u043d\u0438\u0445:<\/p>\n

length<\/span><\/strong>
\n\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0434\u043b\u0438\u043d\u0443 \u0441\u0442\u0440\u043e\u043a\u0438.<\/p>\n

let<\/span> str = «Hello World»<\/span>;
\nconsole.log<\/span>(<\/span>str.length<\/span>)<\/span>; \/\/ 11<\/span><\/p><\/blockquote>\n

indexOf<\/span>(<\/span>substring<\/span>)<\/span><\/strong>
\n\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0438\u043d\u0434\u0435\u043a\u0441 \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u0432\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u043e\u0434\u0441\u0442\u0440\u043e\u043a\u0438 \u0432 \u0441\u0442\u0440\u043e\u043a\u0435. \u0415\u0441\u043b\u0438 \u043f\u043e\u0434\u0441\u0442\u0440\u043e\u043a\u0430 \u043d\u0435 \u043d\u0430\u0439\u0434\u0435\u043d\u0430, \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442\u0441\u044f —1<\/span>.<\/p>\n

let<\/span> str = «Hello World»<\/span>;
\nconsole.log<\/span>(<\/span>str.indexOf<\/span>(<\/span>«llo»<\/span>)<\/span>)<\/span>; \/\/ 2<\/span>
\nconsole.log<\/span>(<\/span>str.indexOf<\/span>(<\/span>«abc»<\/span>)<\/span>)<\/span>; \/\/ -1<\/span><\/p><\/blockquote>\n

lastIndexOf<\/span>(<\/span>substring<\/span>)<\/span><\/strong>
\n\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0438\u043d\u0434\u0435\u043a\u0441 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u0432\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u043f\u043e\u0434\u0441\u0442\u0440\u043e\u043a\u0438 \u0432 \u0441\u0442\u0440\u043e\u043a\u0435. \u0415\u0441\u043b\u0438 \u043f\u043e\u0434\u0441\u0442\u0440\u043e\u043a\u0430 \u043d\u0435 \u043d\u0430\u0439\u0434\u0435\u043d\u0430, \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442\u0441\u044f —1<\/span>.<\/p>\n

let<\/span> str = «Hello World»<\/span>;
\nconsole.log<\/span>(<\/span>str.lastIndexOf<\/span>(<\/span>«l»<\/span>)<\/span>)<\/span>; \/\/ 9<\/span>
\nconsole.log<\/span>(<\/span>str.lastIndexOf<\/span>(<\/span>«abc»<\/span>)<\/span>)<\/span>; \/\/ -1<\/span><\/p><\/blockquote>\n

slice<\/span>(<\/span>start<\/span>, end<\/span>)<\/span><\/strong>
\n\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043f\u043e\u0434\u0441\u0442\u0440\u043e\u043a\u0443 \u0441\u0442\u0440\u043e\u043a\u0438, \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0438\u043d\u0434\u0435\u043a\u0441\u0430 start<\/span> \u0438 \u0437\u0430\u043a\u0430\u043d\u0447\u0438\u0432\u0430\u044f \u0438\u043d\u0434\u0435\u043a\u0441\u043e\u043c end<\/span> (<\/span>\u043d\u0435 \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e)<\/span>.<\/p>\n

let<\/span> str = «Hello World»<\/span>;
\nconsole.log<\/span>(<\/span>str.slice<\/span>(<\/span>0<\/span>, 5<\/span>)<\/span>)<\/span>; \/\/ Hello<\/span>
\nconsole.log<\/span>(<\/span>str.slice<\/span>(<\/span>6<\/span>)<\/span>)<\/span>; \/\/ World<\/span><\/p><\/blockquote>\n

substring<\/span>(<\/span>start<\/span>, end<\/span>)<\/span><\/strong>
\n\u041f\u043e\u0434\u043e\u0431\u0435\u043d \u043c\u0435\u0442\u043e\u0434\u0443 slice<\/span>(<\/span>)<\/span>, \u043d\u043e \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u0443\u0435\u0442 \u043e\u0442\u0440\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u043d\u0434\u0435\u043a\u0441\u044b.<\/p>\n

let<\/span> str = «Hello World»<\/span>;
\nconsole.log<\/span>(<\/span>str.substring<\/span>(<\/span>0<\/span>, 5<\/span>)<\/span>)<\/span>; \/\/ Hello<\/span>
\nconsole.log<\/span>(<\/span>str.substring<\/span>(<\/span>6<\/span>)<\/span>)<\/span>; \/\/ World<\/span><\/p><\/blockquote>\n

replace(<\/span>searchValue, replaceValue)<\/span><\/strong>
\n\u0417\u0430\u043c\u0435\u043d\u044f\u0435\u0442 \u043f\u0435\u0440\u0432\u043e\u0435 \u0432\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u0435 searchValue \u043d\u0430 replaceValue.<\/p>\n

let<\/span> str = «Hello World»<\/span>;
\nconsole.log<\/span>(<\/span>str.replace<\/span>(<\/span>«World»<\/span>, «Universe»<\/span>)<\/span>)<\/span>; \/\/ Hello Universe<\/span><\/p><\/blockquote>\n

split<\/span>(<\/span>separator)<\/span><\/strong>
\n\u0420\u0430\u0437\u0434\u0435\u043b\u044f\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u0443 \u043d\u0430 \u043c\u0430\u0441\u0441\u0438\u0432 \u043f\u043e\u0434\u0441\u0442\u0440\u043e\u043a, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u044b\u0439 \u0440\u0430\u0437\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c.<\/p>\n

let<\/span> str = «Hello,World,Universe»<\/span>;
\nconsole.log<\/span>(<\/span>str.split<\/span>(<\/span>«,»<\/span>)<\/span>)<\/span>; \/\/ [«Hello», «World», «Universe»]<\/span><\/p><\/blockquote>\n

trim(<\/span>)<\/span><\/strong>
\n\u0423\u0434\u0430\u043b\u044f\u0435\u0442 \u043f\u0440\u043e\u0431\u0435\u043b\u044b \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u0438 \u043a\u043e\u043d\u0446\u0435 \u0441\u0442\u0440\u043e\u043a\u0438.<\/p>\n

let<\/span> str = » Hello World «<\/span>;
\nconsole.log<\/span>(<\/span>str.trim<\/span>(<\/span>)<\/span>)<\/span>; \/\/ «Hello World»<\/span><\/p><\/blockquote>\n

toUpperCase<\/span>(<\/span>)<\/span><\/strong>
\n\u041f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u0443 \u0432 \u0432\u0435\u0440\u0445\u043d\u0438\u0439 \u0440\u0435\u0433\u0438\u0441\u0442\u0440.<\/p>\n

let<\/span> str = «hello world»<\/span>;
\nconsole.log<\/span>(<\/span>str.toUpperCase<\/span>(<\/span>)<\/span>)<\/span>; \/\/ HELLO WORLD<\/span><\/p><\/blockquote>\n

toLowerCase<\/span>(<\/span>)<\/span><\/strong>
\n\u041f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u0443\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u0443 \u0432 \u043d\u0438\u0436\u043d\u0438\u0439 \u0440\u0435\u0433\u0438\u0441\u0442\u0440.<\/p>\n

let<\/span> str = «HELLO WORLD»<\/span>;
\nconsole.log<\/span>(<\/span>str.toLowerCase<\/span>(<\/span>)<\/span>)<\/span>; \/\/ hello world<\/span><\/p><\/blockquote>\n

\u042d\u0442\u0438 \u043c\u0435\u0442\u043e\u0434\u044b \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b \u043f\u043e\u043c\u043e\u0433\u0430\u044e\u0442 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u0442\u0440\u043e\u043a\u0430\u043c\u0438 \u0432 JavaScript.<\/p>\n","protected":false},"excerpt":{"rendered":"

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