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Useful functions in JavaScript
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| /*Date functions*/ | |
| /** | |
| * Returns the number of the current week | |
| * @returns {number} - Number of the current week | |
| */ | |
| Date.prototype.getWeek = function() | |
| { | |
| var date = new Date(this.getTime()); | |
| date.setHours(0, 0, 0, 0); | |
| // Thursday in current week decides the year. | |
| date.setDate(date.getDate() + 3 - (date.getDay() + 6) % 7); | |
| // January 4 is always in week 1. | |
| var week1 = new Date(date.getFullYear(), 0, 4); | |
| // Adjust to Thursday in week 1 and count number of weeks from date to week1. | |
| return 1 + Math.round(((date.getTime() - week1.getTime()) / 86400000 - 3 + (week1.getDay() + 6) % 7) / 7); | |
| } | |
| /** | |
| * Determines whether or not a date have a valid format | |
| * @param {date} date - Date to check | |
| * @returns {boolean} - Determine whether or not the date checked is valid | |
| */ | |
| function isValidDate(date) | |
| { | |
| var matches = /^(\d{2})[-\/](\d{2})[-\/](\d{4})$/.exec(date); | |
| if (matches == null) return false; | |
| var d = matches[1]; | |
| var m = matches[2]-1; | |
| var y = matches[3]; | |
| var composedDate = new Date(y, m, d); | |
| return composedDate.getDate() == d && | |
| composedDate.getMonth() == m && | |
| composedDate.getFullYear() == y; | |
| } | |
| /** | |
| * Adds months to a date | |
| * @param {*} date - Date to increment | |
| * @param {*} months - Number of months to add to the initial date entered | |
| */ | |
| function addMonths(date, months) | |
| { | |
| date.setMonth(date.getMonth() + months); | |
| return date.format("dd/MM/yyyy"); | |
| } | |
| /*String functions*/ | |
| /** | |
| * Remove accented characters | |
| * @param {*} string - Text to format | |
| */ | |
| removeAccentedCharacter = function (value) { | |
| return !value ? | |
| '' : | |
| typeof value === 'string' ? | |
| value | |
| .replace(/\n/g, ' ') | |
| .replace(/á/g, 'a') | |
| .replace(/à/g, 'a') | |
| .replace(/é/g, 'e') | |
| .replace(/í/g, 'i') | |
| .replace(/ó/g, 'o') | |
| .replace(/ú/g, 'u') | |
| .replace(/ê/g, 'e') | |
| .replace(/î/g, 'i') | |
| .replace(/ô/g, 'o') | |
| .replace(/è/g, 'e') | |
| .replace(/é/g, 'e') | |
| .replace(/ï/g, 'i') | |
| .replace(/ü/g, 'u') | |
| .replace(/ç/g, 'c') : | |
| value; | |
| }; |
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