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这篇文章主要为大家分析了python全栈中的js对象是什么的相关知识点，内容详细易懂，操作细节合理，具有一定参考价值。如果感兴趣的话，不妨跟着跟随小编一起来看看，下面跟着小编一起深入学习“Python全栈中的JS对象是什么”的知识吧。1.
这篇文章主要为大家分析了python全栈中的js对象是什么的相关知识点，内容详细易懂，操作细节合理，具有一定参考价值。如果感兴趣的话，不妨跟着跟随小编一起来看看，下面跟着小编一起深入学习“Python全栈中的JS对象是什么”的知识吧。
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>object对象</title></head><body> <script> // 1.定义对象方法一 var obj = new Object(); console.log(obj , typeof(obj)) obj.name = "孙坚"; obj.age = 18; obj.weight = "200斤"; obj.eat = function(){ alert("我会吃竹子"); } console.log(obj.name) // obj.eat(); //2.定义对象方法二 var obj = { name:"张三", "age" : 20, sex : "男性", drink : function(something){ console.log("我会喝牛栏山",something); } } //调用方式一 console.log(obj.sex) obj.drink("老白干") //调用方式二 console.log(obj["age"]) obj["drink"](1) // 注意点 var str = "name" console.log(obj.str , "<==========================>") //error console.log(obj.name) console.log(obj[str]) // obj["name"] // eval 可以把字符串当成代码执行 eval("console.log(333)") //3.定义对象方法三 function Person(name,age,sex){ this.name = name; this.age = age; this.sex = sex; this.func = function(){ console.log("我是func"); return this.sex; } } var obj1 = new Person("刘一风",30,"男性"); var obj2 = new Person("张三风",90,"女性"); console.log(obj1.name); var res = obj1.func(); console.log(res); console.log(obj2.name) var res = obj2.func(); console.log(res); //4.遍历对象 for(var i in obj1){ console.log(i) } //5. with(对象) 语法可以直接获取对象成员的值 with(obj1){ console.log(name); console.log(sex); console.log(age); res = func(); console.log(res); } console.log("<===================================>") //将4和5结合,遍历对象中的数据; for(var i in obj1){ //console.log(i , typeof(i)) // name age sex func ... string with(obj1){ console.log(eval(i)) } } </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>json对象</title></head><body> <script> var data = { 'name':"文东", age:20, "sleep":function(){ alert("文东一天睡23小时,还有一个小时上厕所."); } } // js对象 => json格式的字符串 var res = JSON.stringify(data); console.log(res , typeof(res)); // {"name":"文东","age":20} // json格式的字符串 => js对象 res = '{"name":"东东","age":30}'; // success // res = "{'name':90,'age':40}"; error 引号必须是双引号 var res2 = JSON.parse(res); console.log(res2,typeof(res2)); </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>字符串对象的相关方法</title></head><body> <script> var string = "to be or not to be"; //获取字符串长度 length var res = string.length var res = string[-1] console.log(res) //1.清除两侧的空白 trim [ python的strip ] var res = string.trim() console.log(string) console.log(res) //2.获取首次出现的位置 indexOf [ python的find ] var string = "to be or not to be"; var res = string.indexOf("z") console.log(res) //3/最后一次出现的位置 lastIndexOf var res = string.lastIndexOf("zzz") console.log(res); //4.连接字符串concat [ python的 os.path.join + ] var res = string.concat("d:\\","python32\\","day42"); console.log(res); //5.截取字符串 slice var string = "11122233e or not to be"; var res = string.slice(1,7); var res = string.slice(-5,-1); // to b // var res = string.slice(-5,-10); //截取不到返回空 console.log(res,"<==1==>") //6.截取字符串 substr var string = "11122233e or not to be"; var res = string.substr(3,4) console.log(res,"<==2==>") //7.拆分字符串 split [ python的 split ] var string = "11122233e or not to be"; var res = string.split(" ") console.log(res,"<==3==>") //8.大小写 toUpperCase toLowerCase var string = "11122233e Or noT tO be"; res = string.toUpperCase(); res = string.toLowerCase(); console.log(res,"<==4==>") //9.search 匹配第一次找到的索引位置,找不到返回-1 var string = "aaabbb oldaoy ccc" var res = string.search(/oldboy/) console.log(res,"<==5==>") //10.match 返回匹配的数据 var string = "我的电话是 : 13838384388 你的电话是: 13854381438" var res = string.match(/\d{11}/); // 匹配一个 var res = string.match(/\d{11}/g); // 匹配多个,(需要修饰符加上g) console.log(res) console.log(res[0]) console.log(res[1]) //11.字符串替换 replace var string = "to be or not to be"; var res = string.replace("to","two") console.log(res,"<==6==>") // 方法一: function myreplace(string,a,b){ while(string.lastIndexOf(a) != -1){ console.log(1) string = string.replace(a,b); } return string; } var string = "to be or not to be"; var res = myreplace(string,"to","two") console.log(res) // two be or not two be // 方法二 var string = "to be or not to be"; var res = string.replace(/to/g,"two"); console.log(res) </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>数组对象的相关方法</title></head><body> <script> // 1.定义一个数组 var arr = Array(); var arr = Array(10,11,12); var arr = [15,16,17] console.log(arr , typeof(arr)) // ### 1.增 var arr = []; arr[0] = 10; arr[1] = 11; arr[2] = 12; // js特征:允许在一个临时的索引值上插入数据; ok arr[10] = 50; console.log(arr) console.log(arr[5]) // (1)push 从数组的最后插入元素 相当于python的append var arr = []; var res = arr.push(111); var res = arr.push(222); var res = arr.push(333); console.log(res,arr) // (2)unshift 从数组的前面插入元素 相当于python的insert var arr = [100,101]; var res = arr.unshift(1); var res = arr.unshift(333); console.log(res , arr); // (3)concat 迭代追加数据 相当于python的extend var arr1 = [1,2,3] var arr2 = ["你好","我好","她也好"] var res = arr1.concat(arr2) console.log(res, typeof(res)); // ###2删 // (1) delete 删除 var arr = [1, 2, 3, "你好", "我好", "她也好"]; delete arr[1]; console.log(arr); console.log(arr[1]) // (2)pop 从后面删除; var arr = [1, 2, 3, "你好", "我好", "她也好"]; var res = arr.pop(); console.log(res ,arr); // (3)shift 从前面删除 var arr = [1, 2, 3, "你好", "我好", "她也好"]; var res = arr.shift() console.log(res , arr) // ### 特别splice 从指定位置往后进行删除或者添加 var arr = [1, 2, 3, "你好", "我好", "她也好"]; // 从第二个2位置开始,删除2个 var res = arr.splice(2,2) console.log(res , arr) // 从第二个2位置开始,删除0个,添加,"hello","world" var arr = [1, 2, 3, "你好", "我好", "她也好"]; var res = arr.splice(2,0,"hello","world") console.log(res , arr) // ###3改查 var arr = [1, 2, 3, "你好", "我好", "她也好"]; //修改元素 arr[3] = "你不好"; //获取元素 console.log(arr[3]); console.log(arr); // ###4 其他方法 // 拼接字符串 join var arr = ["you","can","you","up"]; var res = arr.join("#") console.log(res) // 数组元素反转 reverse var arr = [100,200,3,150]; var res = arr.reverse(); console.log(res); // 截取数组的一部分 slice var arr = ["宋健","何旭彤","刘利伟","高雪峰","戈隆","王致和","马生平"] var res = arr.slice(2) // var res = arr.slice(2,4) var res = arr.slice(-3,-1) console.log(res); // 排序 默认升序 sort var arr = [1,2,3,4,9,22,21]; var arr = ["1","2","3","4","9","22","21"]; var res = arr.sort() console.log(res) var arr = [100,1,2,3,4,9,22,21]; // sorted 里面的参数是一个函数,通过函数进行升序或者降序排序; var res = arr.sort(function(a,b){ if(a>b){ return -1; }else{ return 1; } }); console.log(res) </script> <!-- python : 冒泡排序 nums = [1,22,3,2,4,9,21]; def bubble_sort(nums): for i in range(len(nums) - 1): # 这个循环负责设置冒泡排序进行的次数 for j in range(len(nums) - i - 1): # j为列表下标 if nums[j] > nums[j + 1]: nums[j], nums[j + 1] = nums[j + 1], nums[j] break; return nums res = bubble_sort(nums) print(res) --></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>数学对象中的相关方法</title></head><body> <script> //四舍五入round var res = Math.round(3.5) var res = Math.round(2.5) var res = Math.round(2.31) console.log(res) //最大值 max var res = Math.max(1,2,3,4,34343); //最小值 min var res = Math.min(1,2,3,4,34343); //绝对值 abs var res = Math.abs(-90); console.log(res) //向下取整 floor 地板 var res = Math.floor(3.001) //向上取整 ceil 天花板 var res = Math.ceil(3.990) //幂运算 pow var res = Math.pow(2,3) //开方运算 sqrt var res = Math.sqrt(9) console.log(res) // ### 随机值推导公式 //获取从0到1随机值 0<x<1 var res = Math.random() console.log(res) //获取1~10的随机值 1 <= x <= 10 var res = Math.ceil(Math.random() * 10 ) console.log(res) // 1.获取从 m 到 n 的随机值 5,14 m=5 , n=14 // 1 <= x <= 10 => 1+4 <= x <= 10+4 < 5 <= x <= 14 var res = Math.ceil(Math.random() * 10 ) + 4 // m = 5 , n = 14 // 2.拆解数字,把对应的m和n进行替换; var res = Math.ceil(Math.random() * (14-5+1) ) + (5 - 1) // 3.推出最后结果 var res = Math.ceil(Math.random() * (n-m+1) ) + (m - 1) // 4.封装函数:终极版:随机值; function randrange(m,n){ return Math.ceil(Math.random() * (n-m+1) ) + (m - 1); } </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>BOM对象 </title></head><body> <script> console.log(window) // 1.弹出警告框 // window.alert('你好') // 2.确认弹窗 // var res = window.confirm("确认弹窗") // console.log(res); // true / false // 3.等待输入弹窗 // var res = window.prompt("请输入您的银行密码:") // console.log(res); // 4.关闭浏览器窗口 // window.close(); // innerHeight innerWidth 获取浏览器窗口内部的宽和高 console.log(`浏览器窗口内部的宽度${window.innerWidth}`) console.log(`浏览器窗口内部的高度${window.innerHeight}`) // window.open("Http://www.baidu.com","_self"); // 在当前页面跳转 // window.open("http://www.baidu.com","_blank","width=500,height=500"); // 在新窗口页面跳转 // ###定时器 var num = 1 function func(){ console.log(`我执行了${num}`); num++; } var id1 = window.setInterval(func,1000); var id2 = window.setTimeout(func,2000); console.log(id1,"id1") console.log(id2,"id2") console.log("我执行完了....") window.clearInterval(id1) </script> </body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>BOM对象 </title></head><body> <script> console.log(window) // 1.弹出警告框 // window.alert('你好') // 2.确认弹窗 // var res = window.confirm("确认弹窗") // console.log(res); // true / false // 3.等待输入弹窗 // var res = window.prompt("请输入您的银行密码:") // console.log(res); // 4.关闭浏览器窗口 // window.close(); // innerHeight innerWidth 获取浏览器窗口内部的宽和高 console.log(`浏览器窗口内部的宽度${window.innerWidth}`) console.log(`浏览器窗口内部的高度${window.innerHeight}`) // window.open("http://www.baidu.com","_self"); // 在当前页面跳转 // window.open("http://www.baidu.com","_blank","width=500,height=500"); // 在新窗口页面跳转 // ###定时器 var num = 1 function func(){ console.log(`我执行了${num}`); num++; } var id1 = window.setInterval(func,1000); var id2 = window.setTimeout(func,2000); console.log(id1,"id1") console.log(id2,"id2") console.log("我执行完了....") window.clearInterval(id1) </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>获取年月日时分秒</title> <style> #clock { width:500px; height:50px; border:solid 1px red; border-radius: 25px; text-align: center; line-height: 50px; background-color: chartreuse; color:red; } </style></head><body> <div id="clock"> </div> <script> var obj = document.getElementById("clock"); console.log(obj) function func(){ var d = new Date(); console.log(d); // 获取年份 var year = d.getFullYear() // 获取月份 月份范围 0 ~ 11 0代表1月份 var month = d.getMonth() // 获取日期 var date = d.getDate() // 获取小时 var hour = d.getHours() // 获取分钟 var minutes = d.getMinutes() // 获取秒数 var seconds = d.getSeconds() strvar= `现在的时间是: ${year}年-${month+1}月-${date}日 ${hour}:${minutes}:${seconds}`; console.log(strvar); obj.innerHTML = strvar console.log(minutes, typeof(minutes)); // 清除定时器的效果 if(minutes == 8){ clearInterval(id); } } var id = window.setInterval(func,1000) </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>BOM模型中 Navigator 对象 </title></head><body> <script> console.log(navigator); console.log(navigator.platfORM) // 判断是pc端还是移动端 console.log(navigator.userAgent) // 在爬虫程序中,可以伪造成浏览器进行数据爬取,绕开服务端的反爬机制; </script></body></html><!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title></head><body> <button onclick="func1()">查看历史对象</button> <button onclick="func2()">跳转到上一页</button> <button onclick="func3()">跳转到下一页</button> <button onclick="func4()">当前页面刷新</button> <script> function func1(){ console.log(history); } function func2(){ history.Go(-1); } function func3(){ // history.go(1); history.go(2); } function func4(){ history.go(0); } </script></body></html>location作用： 负责刷新页面，跳转页面用的，可以获取地址栏上面的参数
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>BOM对象 location</title></head><body> <button onclick="func1()">查看location对象</button> <button onclick="func2()">跳转其他页面</button> <button onclick="func3()">刷新页面</button> <button onclick="func4()">过一秒在刷新页面</button> <script> function func1(){ console.log(location); console.log(`协议:${location.protocol}`); console.log(`ip端口号:${location.host}`); console.log(`端口号:${location.port}`); console.log(`路径:${location.pathname}`); console.log(`获取锚点:${location.hash}`); console.log(`获取地址栏参数:${location.search}`); console.log(`完全地址:${location.href}`) } //跳转页面 function func2(){ // location.href = "http://www.baidu.com";方法一 location.assign("http://www.jd.com"); } //刷新页面 function func3(){ location.reload(); } // 过一秒在刷新页面 function func4(){ setTimeout(func3,1000); console.log("我执行了...") } // 每过一秒刷新一下页面 window.onload = function(){ func4() } </script></body></html>js三大对象1. 本地对象：js语法2. bom对象：浏览器相关的成员（针对于浏览器的控制）brower object model3. dom文档对象：关于html文件节点相关的数据、相关的值（针对于html的控制） document object modeljs是单线程的异步程序定时器是单线程的异步程序（例子）<!doctype html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style> *{margin:0; padding:0; list-style:none;} .wrap{height:170px; width:490px; margin:60px auto; overflow: hidden; position: relative; margin:100px auto;} .wrap ul{position:absolute;} .wrap ul li{height:170px;} .wrap ol{position:absolute; right:5px; bottom:10px;} .wrap ol li{height:20px; width: 20px; background:#ccc; border:solid 1px #666; margin-left:5px; color:#000; float:left; line-height:center; text-align:center; cursor:pointer;} .wrap ol .on{background:#E97305; color:#fff;} </style> <script type="text/javascript"> window.onload=function(){ var wrap=document.getElementById('wrap'), pic=document.getElementById('pic').getElementsByTagName("li"), list=document.getElementById('list').getElementsByTagName('li'), index=0, timer=null; // 定义并调用自动播放函数 timer = setInterval(autoPlay, 2000); // 鼠标划过整个容器时停止自动播放 wrap.onmouseover = function () { clearInterval(timer); } // 鼠标离开整个容器时继续播放至下一张 wrap.onmouseout = function () { timer = setInterval(autoPlay, 2000); } // 遍历所有数字导航实现划过切换至对应的图片 for (var i = 0; i < list.length; i++) { list[i].onmouseover = function () { clearInterval(timer); index = this.innerText - 1; changePic(index); }; }; function autoPlay () { if (++index >= pic.length) index = 0; changePic(index); } // 定义图片切换函数 function changePic (curIndex) { for (var i = 0; i < pic.length; ++i) { pic[i].style.display = "none"; list[i].className = ""; } pic[curIndex].style.display = "block"; list[curIndex].className = "on"; } }; </script> </head><body> <div class="wrap" id='wrap'> <ul id="pic"> <li><img src="../image/img1.png" alt=""></li> <li><img src="../image/img2.png" alt=""></li> <li><img src="../image/img3.png" alt=""></li> </ul> <ol id="list"> <li class="on">1</li> <li>2</li> <li>3</li> <li>4</li> <li>5</li> </ol> </div></body></html>Python是一种跨平台的、具有解释性、编译性、互动性和面向对象的脚本语言，其最初的设计是用于编写自动化脚本，随着版本的不断更新和新功能的添加，常用于用于开发独立的项目和大型项目。
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