Javascript 是否根据按键的次数执行操作？

下面的按键功能根据给定按键的按下次数调用特定函数。在执行时，只有第一个if语句运行，而第二个if语句不运行

$(document).keypress(function(number) {
      var pressCount = 0;
      pressCount++;

      if (number.which == 67 || number.which == 99) {
        if (pressCount = 1) {
          callThisFunction();
        } else if (pressCount = 2) {
          callThisOtherFunction();
          }
      }
 });

---

您的

if

语句中缺少

=

符号。改为：

if (pressCount == 1) {
    callThisFunction();
} else if (pressCount == 2) {
    callThisOtherFunction();
}

同时声明您

按count

函数之外的变量。否则，每次按键时它都会重置为0

var pressCount = 0;

$(document).keypress(function(number) {
   ... // rest of your code

---

您的

if

语句中缺少

=

符号。改为：

if (pressCount == 1) {
    callThisFunction();
} else if (pressCount == 2) {
    callThisOtherFunction();
}

同时声明您

按count

函数之外的变量。否则，每次按键时它都会重置为0

var pressCount = 0;

$(document).keypress(function(number) {
   ... // rest of your code

---

这可能是因为每次函数运行时“pressCount”都重置为0

尝试以下调整：

    var pressCount = 0;

$(document).keypress(function(number) {
      pressCount++;

      if (number.which == 67 || number.which == 99) {
        if (pressCount == 1) {
          callThisFunction();
        } else if (pressCount == 2) {
          callThisOtherFunction();
          }
      }
 });

---

这可能是因为每次函数运行时“pressCount”都重置为0

尝试以下调整：

    var pressCount = 0;

$(document).keypress(function(number) {
      pressCount++;

      if (number.which == 67 || number.which == 99) {
        if (pressCount == 1) {
          callThisFunction();
        } else if (pressCount == 2) {
          callThisOtherFunction();
          }
      }
 });