摘要:
if (!String.prototype.includes) { String.prototype.includes = function(search, start) { 'use strict'; if (typeof start !== 'number') { start = 0; } if 阅读全文
摘要:
if (!Array.prototype.includes) { Array.prototype.includes = function(searchElement /*, fromIndex*/ ) { 'use strict'; var O = Object(this); var len = p 阅读全文