Recently I used javascript to write a simple calculator. It seems okay to test it myself. The Code has been commented out. It is very good. I suggest you learn it. Recently I wrote a simple calculator in javascript, and it feels okay to test it on my own. Let's take a look at the interface:
The interface is like this, but what is the function?
Now it's just a simple standard
Look at the calculator in your phone and divide it into a general calculator and a science calculator
Think that the head is not big enough to achieve a normal version of the bar (support positive and negative subtraction, such as basic continuous operations, does not provide parentheses function)
Look at the diagram effect:
I. Knowledge PREPARATION
1+1 =
Make a calculator like ageAccording to the topic, I made a calendar class and the date of the month and the day of the age, of course, the correct way more than one, the following is my source code and results:Package com. Date;Import Java.awt.FlowLayout;Import java.awt.event.ActionEvent;Import Java.awt.event.ActionListener;Import Java.sql.Date;Import Java.util.Calendar;Import java.util.EmptyStackException;Import Java.util.StringTokenizer;Import Javax
Title DescriptionThe revolutionary contribution of the Sfeng speed algorithm is to predict rounding from a high position. Do not need 99 tables, completely subvert the traditional hand count!The core foundation of the calculator is the multiplication of 1-bit numbers multiplied by multiple digits.Where multiplying by 7 is the most complex, take it for example.Because, 1/7 is a repeating decimal: 0.142857 ..., if the number of digits more than 142857 .
In fact, Windows7 long since brought a fuel consumption calculator, not only convenient but also very fast.
Win7 's calculator has a lot of improvements, don't look at the beginning of the unprepossessing, but a little adjustment will be able to complete a lot of special calculations.
The simplest is to switch between the different computing versions, see the left side of the "View" menu, click here can b
Get all the keys from documentvar keys = Document.queryselectorall (' #calculator span '), var operators = [' + ', '-', ' X ', ' ÷ '];var decimaladded = false;//Add onclick event to all the keys and perform operationsfor (var i = 0; i /* Basic reset */* {margin:0;padding:0;box-sizing:border-box;/* Better text styling */font:bold 14px Arial, Sans-serif ;} /* Finally Adding some IE9 fallbacks for gradients to finish things up *//* A nice BG gradient */h
(1) JSP implementation of the Web page calculator code is as follows: only two JSP pagesMycal.jsp as follows:Myresult.jsp as follows:(2) Although the process is simple but there are several places worth learning:How to tell if the input data is a number: use Math.Round (form1.num1.value)! = Form1.num1.value to judge;How to get the action value: Set the Name property flag implementation;JSP Implementation Web Calcu
The calculator code in this article is very simple and you can easily apply the Web effects to your project.
Html
First we put an input box and multiple calculator buttons on the Web page.
Js
Follow the action type:
function operator (type) {switch (type) {case "clear": Input.value = "0";
_string.length = 0;
/*document.getelementbyid ("CCC"). innerhtml= "";
for
Today to share a calculator program written in pure JavaScript code, many industries can use this program, such as the decoration budget, loan rates and so on.
First look at the effect after the completion:
Method One:
Write the code as follows:
code two:
method Three:
Above in three ways to achieve the pure JavaScript code implementation calculator function, I h
When it comes to Win7 systems, it is believed that many novel features are profound, whether it is a highly flexible Win7 desktop, or a handy Win7 tool that can help us solve problems easily. The use of WINDOWS7 system has been two years, like the reason for Win7 is safe and stable and efficient, sometimes even a seemingly obscure tool or small function can bring great convenience, such as the Win7 system included in the calculator is such a tool. If
Do not know how many of the use of MAC students use the MAC native Calculator application? What about the Mac calculator shortcuts? It looks like a single calculator in fact it also has two other calculator models built into it, the scientific calculator and the programmer
The examples in this article summarize the common methods used to write calculators in Java. Share to everyone for your reference, specific as follows:
Method One:
Package Wanwa;
Import java.awt.*;
Import java.awt.event.*;
Import javax.swing.*; public class Calculator extends JFrame {private Container Container; private gridbaglayout layout; private Gridbagconstra
INTs constraints; Private JTextField displayfield;//calculation results display ar
Recently I wrote a simple calculator in javascript, and it feels okay to test it on my own. Let's take a look at the interface:
The interface is like this, but what is the function?
Now it's just a simple standard calculator that can perform addition, subtraction, multiplication, division, and remainder operations. If the divisor is zero, the following prompt is displayed, as shown in the following figure:
Swift Project Development Combat-Multi-version iphone calculator based on layered architecture-Live Open Class650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/46/F5/wKioL1P1ZvqDp0ruAAGVftQXo-s858.jpg "title=" Swift.jpg "alt=" Wkiol1p1zvqdp0ruaagvftqxo-s858.jpg "/>This course uses QQ Group live broadcast mode to live, the value of 99 Yuan Video course free live. Complete a swift-based project and teach you to do a swift version of the iphone
The Java teacher arranges the homework, wants us to compile a calculator, and must have the parenthesis function ... The disgusting, more than 600 lines of code, debugging to debug to finally be able to use, but estimated there are bugs.There is a bug I know, but it does not affect normal use: there can be a leading zero, that is, there can be 0087 of such numbers, the calculator will think this is 87,.Here
Below, small make up to share in the Jinshan WPS document commonly used toolbar added a Calculator button method, to achieve this operation, need to do data operation when the mouse can bring up the Windows system from the calculator, thus significantly improve the efficiency.
Calculator
Add the Calculator
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.