我很幸运能找到String.fromCharCode()。它对我有很大的帮助。但是，我注意到它没有考虑换档修改器。我知道event.shiftKey属性并使用它，但现在我需要获取考虑到shift键修饰符的键值（例如：“A”或“a”）。起初，我使用String.toLowerCase() ..但我忽略了想数字键，举一个例子：“5”（不带班次）和“％”（带班次）。我需要在我的程序中区分这两者。什么是获取关键字符值的简单方法？获取带有移位修饰符的键码的关键字符（值）
这种蛮力技术不是最漂亮的，但它似乎工作。我在寻找相同的功能。
function mapKeyPressToActualCharacter(isShiftKey, characterCode) {
if (characterCode === 27 || characterCode === 8 || characterCode === 9 || characterCode === 20 || characterCode === 16 || characterCode === 17 || characterCode === 91 || characterCode === 13 || characterCode === 92 || characterCode === 18) {
return false;
}
if (typeof isShiftKey != "boolean" || typeof characterCode != "number") {
return false;
}
var characterMap = [];
characterMap[192] = "~";
characterMap[49] = "!";
characterMap[50] = "@";
characterMap[51] = "#";
characterMap[52] = "$";
characterMap[53] = "%";
characterMap[54] = "^";
characterMap[55] = "&";
characterMap[56] = "*";
characterMap[57] = "(";
characterMap[48] = ")";
characterMap[109] = "_";
characterMap[107] = "+";
characterMap[219] = "{";
characterMap[221] = "}";
characterMap[220] = "|";
characterMap[59] = ":";
characterMap[222] = "\"";
characterMap[188] = "<";
characterMap[190] = ">";
characterMap[191] = "?";
characterMap[32] = " ";
var character = "";
if (isShiftKey) {
if (characterCode >= 65 && characterCode <= 90) {
character = String.fromCharCode(characterCode);
} else {
character = characterMap[characterCode];
}
} else {
if (characterCode >= 65 && characterCode <= 90) {
character = String.fromCharCode(characterCode).toLowerCase();
} else {
character = String.fromCharCode(characterCode);
}
}
return character;
}
是的。看起来不错。在尝试暴力方法之前，我想知道是否有可接受的解决方案。感谢您的回应。 – Alan 2011-02-28 01:59:03
这是有效的，但确实令人不安的是没有标准接受的解决方案。 – 2013-02-18 01:37:39
关于如何为非美式键盘布局创建此帐户的任何想法（例如，英国键盘上的Shift + 3是英镑符号）？ – 2015-07-14 17:11:04
这一切都取决于您绑定的事件。在onkeypress事件期间，String.fromCharCode()将占用shiftKey。但是，在onkeydown活动期间不会关注它。
扩展在wsams响应，这里是一个更完整的解决方案，它需要更多的内存，但更高性能的
var characterMapShift = [];
characterMapShift[8] = "";
characterMapShift[9] = "";
characterMapShift[13] = "\n";
characterMapShift[16] = "";
characterMapShift[17] = "";
characterMapShift[18] = "";
characterMapShift[19] = "";
characterMapShift[20] = "";
characterMapShift[27] = "";
characterMapShift[32] = " ";
characterMapShift[33] = "";
characterMapShift[34] = "";
characterMapShift[35] = "";
characterMapShift[36] = "";
characterMapShift[37] = "";
characterMapShift[38] = "";
characterMapShift[39] = "";
characterMapShift[40] = "";
characterMapShift[45] = "";
characterMapShift[46] = "";
characterMapShift[48] = ")";
characterMapShift[49] = "!";
characterMapShift[50] = "@";
characterMapShift[51] = "#";
characterMapShift[52] = "$";
characterMapShift[53] = "%";
characterMapShift[54] = "^";
characterMapShift[55] = "&";
characterMapShift[56] = "*";
characterMapShift[57] = "(";
characterMapShift[59] = ":";
characterMapShift[61] = "+";
characterMapShift[65] = "A";
characterMapShift[66] = "B";
characterMapShift[67] = "C";
characterMapShift[68] = "D";
characterMapShift[69] = "E";
characterMapShift[70] = "F";
characterMapShift[71] = "G";
characterMapShift[72] = "H";
characterMapShift[73] = "I";
characterMapShift[74] = "J";
characterMapShift[75] = "K";
characterMapShift[76] = "L";
characterMapShift[77] = "M";
characterMapShift[78] = "N";
characterMapShift[79] = "O";
characterMapShift[80] = "P";
characterMapShift[81] = "Q";
characterMapShift[82] = "R";
characterMapShift[83] = "S";
characterMapShift[84] = "T";
characterMapShift[85] = "U";
characterMapShift[86] = "V";
characterMapShift[87] = "W";
characterMapShift[88] = "X";
characterMapShift[89] = "Y";
characterMapShift[90] = "Z";
characterMapShift[91] = "";
characterMapShift[92] = "";
characterMapShift[93] = "";
characterMapShift[96] = "0";
characterMapShift[97] = "1";
characterMapShift[98] = "2";
characterMapShift[99] = "3";
characterMapShift[100] = "4";
characterMapShift[101] = "5";
characterMapShift[102] = "6";
characterMapShift[103] = "7";
characterMapShift[104] = "8";
characterMapShift[105] = "9";
characterMapShift[106] = "*";
characterMapShift[107] = "+";
characterMapShift[109] = "_";
characterMapShift[107] = "+";
characterMapShift[111] = "/";
characterMapShift[112] = "";
characterMapShift[113] = "";
characterMapShift[114] = "";
characterMapShift[115] = "";
characterMapShift[116] = "";
characterMapShift[117] = "";
characterMapShift[118] = "";
characterMapShift[119] = "";
characterMapShift[120] = "";
characterMapShift[121] = "";
characterMapShift[122] = "";
characterMapShift[123] = "";
characterMapShift[144] = "";
characterMapShift[145] = "";
characterMapShift[186] = ":";
characterMapShift[187] = "+";
characterMapShift[188] = "<";
characterMapShift[189] = "_";
characterMapShift[190] = ">";
characterMapShift[191] = "?";
characterMapShift[192] = "~";
characterMapShift[219] = "{";
characterMapShift[220] = "|";
characterMapShift[221] = "}";
characterMapShift[222] = "\"";
var characterMap = [];
characterMap[8] = "";
characterMap[9] = "";
characterMap[13] = "\n";
characterMap[16] = "";
characterMap[17] = "";
characterMap[18] = "";
characterMap[19] = "";
characterMap[20] = "";
characterMap[27] = "";
characterMap[32] = " ";
characterMap[33] = "";
characterMap[34] = "";
characterMap[35] = "";
characterMap[36] = "";
characterMap[37] = "";
characterMap[38] = "";
characterMap[39] = "";
characterMap[40] = "";
characterMap[45] = "";
characterMap[46] = "";
characterMap[48] = "0";
characterMap[49] = "1";
characterMap[50] = "2";
characterMap[51] = "3";
characterMap[52] = "4";
characterMap[53] = "5";
characterMap[54] = "6";
characterMap[55] = "7";
characterMap[56] = "8";
characterMap[57] = "9";
characterMap[59] = ";";
characterMap[61] = "=";
characterMap[65] = "a";
characterMap[66] = "b";
characterMap[67] = "c";
characterMap[68] = "d";
characterMap[69] = "e";
characterMap[70] = "f";
characterMap[71] = "g";
characterMap[72] = "h";
characterMap[73] = "i";
characterMap[74] = "j";
characterMap[75] = "k";
characterMap[76] = "l";
characterMap[77] = "m";
characterMap[78] = "n";
characterMap[79] = "o";
characterMap[80] = "p";
characterMap[81] = "q";
characterMap[82] = "r";
characterMap[83] = "s";
characterMap[84] = "t";
characterMap[85] = "u";
characterMap[86] = "v";
characterMap[87] = "w";
characterMap[88] = "x";
characterMap[89] = "y";
characterMap[90] = "z";
characterMap[91] = "";
characterMap[92] = "";
characterMap[93] = "";
characterMap[96] = "0";
characterMap[97] = "1";
characterMap[98] = "2";
characterMap[99] = "3";
characterMap[100] = "4";
characterMap[101] = "5";
characterMap[102] = "6";
characterMap[103] = "7";
characterMap[104] = "8";
characterMap[105] = "9";
characterMap[106] = "*";
characterMap[107] = "+";
characterMap[109] = "_";
characterMap[107] = "+";
characterMap[111] = "/";
characterMap[112] = "";
characterMap[113] = "";
characterMap[114] = "";
characterMap[115] = "";
characterMap[116] = "";
characterMap[117] = "";
characterMap[118] = "";
characterMap[119] = "";
characterMap[120] = "";
characterMap[121] = "";
characterMap[122] = "";
characterMap[123] = "";
characterMap[144] = "";
characterMap[145] = "";
characterMap[186] = ";";
characterMap[187] = "=";
characterMap[188] = ",";
characterMap[189] = "-";
characterMap[190] = ".";
characterMap[191] = "/";
characterMap[192] = "`";
characterMap[219] = "[";
characterMap[220] = "\\";
characterMap[221] = "]";
characterMap[222] = "'";
function mapKeyPressToActualCharacter(isShiftKey, characterCode) {
if (typeof isShiftKey != "boolean" || typeof characterCode != "number") {
return false;
}
if (isShiftKey) {
return characterMapShift[characterCode];
} else {
return characterMap[characterCode];
}
}
什么问题的情况下。您是否试图查看在按键，按键，按键事件期间是否按下了Shift键。还是你正在评估一串字符，并想知道它是大写/小写还是数字/特殊字符？ – 2010-07-26 17:23:07
我知道如何检查按键事件期间是否按下了shift键。我所问的是，是否有办法让按键的字符被按下（一种考虑到shift键的方法） – Alan 2010-07-26 17:26:10
目前还不清楚你想要什么。你想要输入的实际字符吗？被按下的实际物理键？ – 2010-07-26 19:08:53