54 lines
1.6 KiB
JavaScript
54 lines
1.6 KiB
JavaScript
/* eslint no-extend-native: ["error", { "exceptions": ["String", "Array"] }] */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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Object.defineProperty(String.prototype, 'fromCodePoint', function () {
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let chars = []
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let point, offset, units, i
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for (i = 0; i < arguments.length; ++i) {
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point = arguments[i]
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offset = point - 0x10000
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units = point > 0xFFFF
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? [
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0xD800 + (offset >> 10),
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0xDC00 + (offset & 0x3FF)]
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: [point]
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chars.push(String.fromCharCode.apply(null, units))
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}
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return chars.join('')
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})
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Object.defineProperty(String.prototype, 'endsWith', function (str) {
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return this.match(str + '$') === str
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})
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Object.defineProperty(String.prototype, 'startsWith', function (str) {
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return this.match('^' + str) === str
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})
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Object.defineProperty(String.prototype, 'trim', function () {
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return this.replace(/^[\s\xA0]+/, '').replace(/[\s\xA0]+$/, '')
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})
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Object.defineProperty(String.prototype, 'insert', function (data, idx) {
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return this.slice(0, idx) + data + this.slice(idx, this.length)
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})
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Object.defineProperty(Array.prototype, 'has', function (v) {
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return this.indexOf(v) !== -1
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})
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Object.defineProperty(Array.prototype, 'forEach', function (array, fn) {
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for (let i = 0; i < array.length; i++) {
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fn(array[i])
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}
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})
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Object.defineProperty(Array.prototype, 'map', function (fn, array) {
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let result = []
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Array.forEach(array, function (element) {
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result.push(fn(element))
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})
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return result
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})
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