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May 20, 2017 08:44
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Date methods
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/* eslint no-inline-comments: 0 */ | |
/* eslint line-comment-position: 0 */ | |
/* eslint no-unused-expressions: 0 */ | |
// Object.getOwnPropertyNames(Date); | |
Date.length; // 7 - number | |
Date.name; // Date - string | |
Date.arguments; // null - object | |
Date.caller; // null - object | |
Date.prototype; // prototype - could not call this. | |
Date.now(); // 1495269792944 | |
Date.parse(); // NaN | |
Date.UTC(); // NaN | |
// Object.getOwnPropertyNames(Date.prototype); | |
new Date().constructor(); // Sat May 20 2017 10:43:12 GMT+0200 (Środkowoeuropejski czas letni) | |
new Date().toString(); // Sat May 20 2017 10:43:12 GMT+0200 (Środkowoeuropejski czas letni) | |
new Date().toDateString(); // Sat May 20 2017 | |
new Date().toTimeString(); // 10:43:12 GMT+0200 (Środkowoeuropejski czas letni) | |
new Date().toISOString(); // 2017-05-20T08:43:12.944Z | |
new Date().toUTCString(); // Sat, 20 May 2017 08:43:12 GMT | |
new Date().toGMTString(); // Sat, 20 May 2017 08:43:12 GMT | |
new Date().getDate(); // 20 | |
new Date().setDate(); // NaN | |
new Date().getDay(); // 6 | |
new Date().getFullYear(); // 2017 | |
new Date().setFullYear(); // NaN | |
new Date().getHours(); // 10 | |
new Date().setHours(); // NaN | |
new Date().getMilliseconds(); // 945 | |
new Date().setMilliseconds(); // NaN | |
new Date().getMinutes(); // 43 | |
new Date().setMinutes(); // NaN | |
new Date().getMonth(); // 4 | |
new Date().setMonth(); // NaN | |
new Date().getSeconds(); // 12 | |
new Date().setSeconds(); // NaN | |
new Date().getTime(); // 1495269792945 | |
new Date().setTime(); // NaN | |
new Date().getTimezoneOffset(); // -120 | |
new Date().getUTCDate(); // 20 | |
new Date().setUTCDate(); // NaN | |
new Date().getUTCDay(); // 6 | |
new Date().getUTCFullYear(); // 2017 | |
new Date().setUTCFullYear(); // NaN | |
new Date().getUTCHours(); // 8 | |
new Date().setUTCHours(); // NaN | |
new Date().getUTCMilliseconds(); // 945 | |
new Date().setUTCMilliseconds(); // NaN | |
new Date().getUTCMinutes(); // 43 | |
new Date().setUTCMinutes(); // NaN | |
new Date().getUTCMonth(); // 4 | |
new Date().setUTCMonth(); // NaN | |
new Date().getUTCSeconds(); // 12 | |
new Date().setUTCSeconds(); // NaN | |
new Date().valueOf(); // 1495269792946 | |
new Date().getYear(); // 117 | |
new Date().setYear(); // NaN | |
new Date().toJSON(); // 2017-05-20T08:43:12.946Z | |
new Date().toLocaleString(); // 2017-05-20 10:43:12 | |
new Date().toLocaleDateString(); // 2017-05-20 | |
new Date().toLocaleTimeString(); // 10:43:12 | |
// /* SCRIPT TO GENERATE THE DATE OUTPUT. */ | |
// | |
// /* eslint no-console: 0 */ | |
// const lines = [ | |
// '/* eslint no-inline-comments: 0 */', | |
// '/* eslint line-comment-position: 0 */', | |
// '/* eslint no-unused-expressions: 0 */', | |
// '\r\n// Object.getOwnPropertyNames(Date);\r\n' | |
// ]; | |
// | |
// const datePropertyNames = Object.getOwnPropertyNames(Date); | |
// | |
// datePropertyNames.forEach((propName) => { | |
// if (typeof Date[propName] === 'function') { | |
// lines.push(`Date.${propName}(); // ${Date[propName]()}`); | |
// } else { | |
// try { | |
// lines.push(`Date.${propName}; // ${Date[propName]} - ${typeof Date[propName]}`); | |
// } catch (err) { | |
// lines.push(`Date.${propName}; // ${propName} - could not call this.`); | |
// } | |
// } | |
// }); | |
// | |
// lines.push('\r\n// Object.getOwnPropertyNames(Date.prototype);\r\n'); | |
// | |
// const datePrototypePropertyNames = Object.getOwnPropertyNames(Date.prototype); | |
// | |
// datePrototypePropertyNames.forEach((propName) => { | |
// if (typeof Date.prototype[propName] === 'function') { | |
// lines.push(`new Date().${propName}(); // ${new Date()[propName]()}`); | |
// } else { | |
// lines.push(`new Date().${propName}; // ${Date.prototype[propName]} - ${typeof Date.prototype[propName]}`); | |
// } | |
// }); | |
// | |
// const theCode = require('fs').readFile(__filename, 'utf-8', (err, scriptLines) => { | |
// if (err) { | |
// console.log(err.message); | |
// } | |
// | |
// const resultLines = lines.concat('\r\n').join('\r\n'); | |
// const commentedScriptLines = scriptLines | |
// .split('\n') | |
// .map((line) => `// ${line}`) | |
// .concat('\n') | |
// .join('\n'); | |
// | |
// require('fs').writeFile('dateTypes.js', resultLines + commentedScriptLines, 'utf-8', () => console.log('done')); | |
// }); | |
// | |
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