jquery select快速选择插件
$.fn.selectHelper = function(){$(this).bind("keydown",function(){getNextKeyItem();});getNextKeyItem = function(){var elm = event.srcElement; var index = elm.selectedIndex + 1; do { if (index == elm.length) index = 0; if (index == elm.selectedIndex) return false; // 未找到匹配的选项，则退出 } while (key2Char(event.keyCode) != getPinYin(getItemKeyChar(elm.options))); elm.selectedIndex = index - 1; // 选中匹配的选项 return false; // 取消原有的选择功能 }getItemKeyChar = function(option){return option.text.charAt(0).toUpperCase();}key2Char = function(key){var s = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; if (key >= 97 && key <= 122) return s.charAt(key - 97); if (key >= 65 && key <= 90) return s.charAt(key - 65); if (key >= 48 && key <= 57) return "" + (key - 48); return null;}getPinYin = function(c){execScript("tmp=asc(\"" + c + "\")", "vbscript"); tmp = 65536 + tmp; if (tmp >= 45217 && tmp <= 45252) return "A"; if (tmp >= 45253 && tmp <= 45760) return "B"; if (tmp >= 45761 && tmp <= 46317) return "C"; if (tmp >= 46318 && tmp <= 46825) return "D"; if (tmp >= 46826 && tmp <= 47009) return "E"; if (tmp >= 47010 && tmp <= 47296) return "F"; if ((tmp >= 47297 && tmp <= 47613) || (tmp == 63193)) return "G"; if (tmp >= 47614 && tmp <= 48118) return "H"; if (tmp >= 48119 && tmp <= 49061) return "J"; if (tmp >= 49062 && tmp <= 49323) return "K"; if (tmp >= 49324 && tmp <= 49895) return "L"; if (tmp >= 49896 && tmp <= 50370) return "M"; if (tmp >= 50371 && tmp <= 50613) return "N"; if (tmp >= 50614 && tmp <= 50621) return "O"; if (tmp >= 50622 && tmp <= 50905) return "P"; if (tmp >= 50906 && tmp <= 51386) return "Q"; if (tmp >= 51387 && tmp <= 51445) return "R"; if (tmp >= 51446 && tmp <= 52217) return "S"; if (tmp >= 52218 && tmp <= 52697) return "T"; if (tmp >= 52698 && tmp <= 52979) return "W"; if (tmp >= 52980 && tmp <= 53688) return "X"; if (tmp >= 53689 && tmp <= 54480) return "Y"; if (tmp >= 54481 && tmp <= 62289) return "Z"; return c.charAt(0);}}
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