[英]Updating display on JS calculator
I want to have my calculator to display "0" when cleared or no other numbers have been entered but when I start adding numbers I want the 0 to be replaced.我想让我的计算器在清除或未输入其他数字时显示“0”,但当我开始添加数字时,我希望替换 0。 Currently when I enter any number it replaces the number on the display to the number entered.
目前,当我输入任何数字时,它会将显示屏上的数字替换为输入的数字。
this.currentDisplay = "0"
numberData(number) {
if (number === "." && this.currentDisplay.includes("."))
return
if (this.currentDisplay = "0") {
this.currentDisplay = this.currentDisplay.toString().replace("0", number.toString())
}
else {
this.currentDisplay = this.currentDisplay.toString() + number.toString()
}
}
You have an error on the this condition:您在这种情况下有错误:
if (this.currentDisplay == "0") {
...
}
In your code you are assigning this.currentDisplay = 0
, you should compare with ==
or better ===
to compare the types of the variables too.在您分配的代码中
this.currentDisplay = 0
,您应该与==
或更好的===
进行比较以比较变量的类型。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.