import java.awt.Button
import java.awt.Color
import java.awt.FlowLayout
import java.awt.Font
import java.awt.Frame
import java.awt.GridLayout
import java.awt.Panel
import java.awt.TextField
import java.awt.event.ActionEvent
import java.awt.event.ActionListener
//定义JsqFrame继承Frame
class JsqFrame extends Frame {
double d1, d2 //定义两个double类型的变量
int op = -1 //定义两个int类型的变量
static TextField tf//定义静态对象TextField
CalPanelL p1 //定义CalPanelL对象
// Constructor构造方法
JsqFrame() {
//以下设置属性
super("计算器")
setLayout(new FlowLayout())
setResizable(false)
setSize(250, 250)
tf = new TextField(18)
tf.setEditable(false)
tf.setBackground(Color.lightGray)
tf.setForeground(Color.red)
tf.setFont(new Font("Arial", Font.BOLD, 16))
add(tf)
p1 = new CalPanelL()
add(p1)
setVisible(true)
// addWindowListener(new Wclose())
}
//添加按钮继承Button类
class CalButton extends Button {
CalButton(String s) {
//设置按钮属性
super(s)
setBackground(Color.WHITE) //设置颜色为白色
}
}
//定义显示器继承Panel类
class CalPanelL extends Panel {
CalButton a, c, b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, bPN, bPoint,
bAdd, bSub, bMul, bDiv, bL, bR, bLn, bEqual, bCE, bQuit
CalPanelL() {
//设置显示器的属性
setLayout(new GridLayout(6, 4))
setFont(new Font("TimesRoman", Font.BOLD, 16))
a = new CalButton("")
c = new CalButton("")
b0 = new CalButton("0")
b1 = new CalButton("1")
b2 = new CalButton("2")
b3 = new CalButton("3")
b4 = new CalButton("4")
b5 = new CalButton("5")
b6 = new CalButton("6")
b7 = new CalButton("7")
b8 = new CalButton("8")
b9 = new CalButton("9")
bPN = new CalButton("+/-")
bPoint = new CalButton(".")
// 设置按钮
bAdd = new CalButton("+")
bSub = new CalButton("-")
bMul = new CalButton("*")
bDiv = new CalButton("/")
bL = new CalButton("(")
bR = new CalButton(")")
bLn = new CalButton("ln")
bEqual = new CalButton("=")
bCE = new CalButton("CE")
bQuit = new CalButton("退出")
// 加入按钮
add(a)
add(c)
add(bCE)
bCE.addActionListener(new PressBCE())
add(bQuit)
bQuit.addActionListener(new PressBQuit())
add(b7)
b7.addActionListener(new PressB7())
add(b8)
b8.addActionListener(new PressB8())
add(b9)
b9.addActionListener(new PressB9())
add(bDiv)
bDiv.addActionListener(new PressBDiv())
add(b4)
b4.addActionListener(new PressB4())
add(b5)
b5.addActionListener(new PressB5())
add(b6)
b6.addActionListener(new PressB6())
add(bMul)
bMul.addActionListener(new PressBMul())
add(b1)
b1.addActionListener(new PressB1())
add(b2)
b2.addActionListener(new PressB2())
add(b3)
b3.addActionListener(new PressB3())
add(bSub)
bSub.addActionListener(new PressBSub())
add(b0)
b0.addActionListener(new PressB0())
add(bPoint)
bPoint.addActionListener(new PressBPoint())
add(bPN)
bPN.addActionListener(new PressBPN())
add(bAdd)
bAdd.addActionListener(new PressBAdd())
add(bL)
bL.addActionListener(new PressBL())
add(bR)
bR.addActionListener(new PressBR())
add(bLn)
bLn.addActionListener(new PressBLn())
add(bEqual)
bEqual.addActionListener(new PressBEqual())
}
}
//定义PressBAdd实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[加号的监听事件]
class PressBAdd implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String d1 = tf.getText()
op = 0
tf.setText(d1 + "+")
} catch (Exception ee) {
}
}
}
//定义PressBSub实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[减号的监听事件]
class PressBSub implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String d1 = tf.getText()
op = 1
tf.setText(d1 + "-")
} catch (Exception ee) {
}
}
}
//定义PressBMul实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[乘号的监听事件]
class PressBMul implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String d1 = tf.getText()
op = 2
tf.setText(d1 + "*")
} catch (Exception ee) {
}
}
}
//定义PressBDiv实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[除号的监听事件]
class PressBDiv implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String d1 = tf.getText()
op = 3
tf.setText(d1 + "/")
} catch (Exception ee) {
}
}
}
//定义PressBL实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[向左键的监听事件]
class PressBL implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String d1 = tf.getText()
op = 3
tf.setText(d1 + "(")
} catch (Exception ee) {
}
}
}
//定义PressBR实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[向右键的监听事件]
class PressBR implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String d1 = tf.getText()
op = 3
tf.setText(d1 + ")")
} catch (Exception ee) {
}
}
}
//定义PressBEqual实现ActionListener
//大体的意思是按计算机按键的时出发的时间，设置按键的监听[等号的监听事件]
class PressBEqual implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
Jsq jsq = new Jsq()
String s = tf.getText()
System.out.println(s)
while (s.indexOf("(") + 1 > 0 && s.indexOf(")") > 0) {
String s1 = jsq.caculateHigh(s)
System.out.println(s1)
s = s1
}
String str = jsq.cacluteMain(s)
System.out.println(str)
tf.setText(String.valueOf(str))
} catch (Exception ee) {
}
}
}
/*
* 批量写吧
* 以下是按1、2、3等等的监听事件
* 还有清零的等等监听事件
*/
class PressBLn implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
double x = Double.parseDouble(tf.getText())
double y
y = Math.log10(x)
tf.setText(y + "")
} catch (Exception ee) {
}
}
}
class PressBCE implements ActionListener {
public void actionPerformed(ActionEvent e) {
tf.setText("")
}
}
class PressBPN implements ActionListener {
public void actionPerformed(ActionEvent e) {
try {
String text = tf.getText()
if (text != "") {
if (text.charAt(0) == '-')
tf.setText(text.substring(1))
else if (text.charAt(0) >= '0' && text.charAt(0) <= '9')
tf.setText("-" + text.substring(0))
else if (text.charAt(0) == '.')
tf.setText("-0" + text.substring(0))
}
} catch (Exception ee) {
}
}
}
class PressBPoint implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
if (text.lastIndexOf(".") == -1)
tf.setText(text + ".")
}
}
class PressB0 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "0")
}
}
class PressB1 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "1")
}
}
class PressB2 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "2")
}
}
class PressB3 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "3")
}
}
class PressB4 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "4")
}
}
class PressB5 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "5")
}
}
class PressB6 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "6")
}
}
class PressB7 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "7")
}
}
class PressB8 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "8")
}
}
class PressB9 implements ActionListener {
public void actionPerformed(ActionEvent e) {
String text = tf.getText()
tf.setText(text + "9")
}
}
class PressBQuit implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.exit(0)
}
}
public void Js() {
String text = tf.getText()
tf.setText(text)
}
}
js计算器代码，通过弹窗显示步骤如下。1、js计算器代码编写html，实现计算器页面视图效果。
2、js计算器代码编写，实现点击输入数字和符号输出结果。
3、js计算器代码创建click1函数，判断flag的值，如果是true就定位到第一个输入框，如果是false就定位到第二个输入框，将点击传过来的值与输入框里面的字符串拼接到一起。
4、js计算器代码定义result函数，定位到两个输入框，取出其中的值并转成整数，定位到隐藏输入框，取出里面的符号，然后判断是什么符号，进行相应的运算，弹出运算结果。
