使用HTML+CSS,jQuery编写的简易计算器后续(添加了键盘监听)_html/css_WEB-ITnose
程序员文章站
2022-05-18 14:06:15
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之前发布了一款简易的计算器,今天做了一下修改,添加了键盘监听事件,不用再用鼠标点点点啦 20
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JS代码:
var yunSuan = 0;// 运算符号,0-无运算;1-加法;2-减法;3-乘法;4-除法var change = 0;// 属于运算符后需要清空上一数值var num1 = 0;// 运算第一个数据var num2 = 0;// 运算第二个数据var cunChuValue = 0;// 存储的数值$(function() { $(".number").click(function() {// 点击数字触发事件 var num = $(this).attr('name'); var oldValue = $("#jieguo").html(); if (change == 1) { oldValue = "0"; change = 0; } var newValue = ""; if (num == -1) { oldValue = parseFloat(oldValue); newValue = oldValue * -1; } else if (num == ".") { if (oldValue.indexOf('.') == -1) newValue = oldValue + "."; else newValue = oldValue; } else { if (oldValue == 0 && oldValue.indexOf('.') == -1) { newValue = num; } else { newValue = oldValue + num; } } $("#jieguo").html(newValue); }); $("#qingPing").click(function() {// 点击清屏触发事件 $("#jieguo").html("0"); yunSuan = 0; change = 0; num1 = 0; num2 = 0; }); $("#tuiGe").click(function() {// 点击退格触发事件 if (change == 1) { yunSuan = 0; change = 0; } var value = $("#jieguo").html(); if (value.length == 1) { $("#jieguo").html("0"); } else { value = value.substr(0, value.length - 1); $("#jieguo").html(value); } }); $(".yunSuan").click(function() {// 点击运算符号触发事件 change = 1; yuSuan = $(this).attr('name'); var value = $("#jieguo").html(); var dianIndex = value.indexOf("."); if (dianIndex == value.length) { value = value.substr(0, value.length - 1); } num1 = parseFloat(value); }); $("#dengYu").click(function() {// 点击等于符号触发事件 var value = $("#jieguo").html(); var dianIndex = value.indexOf("."); if (dianIndex == value.length) { value = value.substr(0, value.length - 1); } num2 = parseFloat(value); var sum = 0; if (yuSuan == 1) { sum = num1 + num2; } else if (yuSuan == 2) { sum = num1 - num2; } else if (yuSuan == 3) { sum = num1 * num2; } else if (yuSuan == 4) { sum = num1 / num2; } else if (yuSuan == 0 || num1 == 0 || num2 == 0) { sum = num1 + num2; } var re = /^[0-9]+.?[0-9]*$/; if (re.test(sum)) { sum = sum.toFixed(2); } $("#jieguo").html(sum); change = 1; yuSuan = 0; num1 = 0; num2 = 0; }); $("#cunChu").click(function() {// 点击存储触发事件 change = 1; var value = $("#jieguo").html(); var dianIndex = value.indexOf("."); if (dianIndex == value.length) { value = value.substr(0, value.length - 1); } cunChuValue = parseFloat(value); }); $("#quCun").click(function() {// 点击取存触发事件 change = 1; $("#jieguo").html(cunChuValue); }); $("#qingCun").click(function() {// 点击清存触发事件 change = 1; cunChuValue = 0; }); $("#leiCun").click(function() {// 点击累存触发事件 change = 1; var value = $("#jieguo").html(); var dianIndex = value.indexOf("."); if (dianIndex == value.length) { value = value.substr(0, value.length - 1); } cunChuValue += parseFloat(value); }); $("#jiCun").click(function() {// 点击积存触发事件 change = 1; var value = $("#jieguo").html(); var dianIndex = value.indexOf("."); if (dianIndex == value.length) { value = value.substr(0, value.length - 1); } if (cunChuValue == 0) { cunChuValue = parseFloat(value); } else { cunChuValue = cunChuValue * parseFloat(value); } });});// 按键监听$(document) .keydown( function(event) { // 数字监听 if (((event.keyCode > 47 && event.keyCode 95 && event.keyCode
HTML/CSS代码:
1 3 4 5 6 7简易计算器 89 16 17 18 19
22 24 | 25|||
28 | 2930 | 3132 | 3334 | 35
38 | 3940 | 4142 | 4344 45 | 46
49 50 | 5152 53 | 5455 56 | 5758 59 | 60
63 64 | 6566 67 | 6869 70 | 7172 73 | 74
77 78 | 7980 81 | 8283 84 | 8586 87 | 88
91 92 | 9394 95 | 9697 98 | 99100 | 101
计算器样式布局有所借鉴,代码均为原创,未经授权禁止转载;内容未经过严格测试,如遇BUG欢迎提出,谢谢!