Java and JavaScript timestamps are not the same

I've got a problem with timestamps between java and javascript. I already found these 2 questions about the timestamps and I know about the timechanges all over the years. Timestamp deviation Java vs Javascript for old dates (3600secs) Why is subtracting these two times (in 1927) giving a strange result? Basically at midnight at the end of 1927, the clocks went back 5 minutes and 52 s

Java和JavaScript时间戳不一样

我遇到了java和javascript之间的时间戳问题。 我已经发现了关于时间戳的这两个问题,而且我知道这些年来的时间变化。 时间戳偏差Java与JavaScript的旧日期(3600secs) 为什么要减去这两次(在1927年)给出一个奇怪的结果? 基本上在1927年底的午夜,时钟回落了5分52秒。 所以“1927-12-31 23:54:08”实际上发生了两次,看起来Java正在解析它作为当地日期/时间的后续可能时刻。 这些问题造成的是,当我有JavaScript并将

Why does Date.parse give incorrect results?

Case One: new Date(Date.parse("Jul 8, 2005")); Output: Fri Jul 08 2005 00:00:00 GMT-0700 (PST) Case Two: new Date(Date.parse("2005-07-08")); Output: Thu Jul 07 2005 17:00:00 GMT-0700 (PST) Why is the second parse incorrect? Until the 5th edition spec came out, the Date.parse method was completely implementation dependent ( new Date(string) is equivalent to Date.parse(string) except

为什么Date.parse会提供不正确的结果?

案例一: new Date(Date.parse("Jul 8, 2005")); 输出: 星期五Jul 08 2005 00:00:00 GMT-0700(PST) 案例二: new Date(Date.parse("2005-07-08")); 输出: Thu Jul 07 2005 17:00:00 GMT-0700(PST) 为什么第二个解析不正确? 在第5版规范出来之前, Date.parse方法完全依赖于实现( new Date(string)相当于Date.parse(string)但后者返回一个数字而不是Date )。 在第5版规范中,添加了该要求以支持简化(并

What is the difference between call and apply?

What is the difference between using call and apply to invoke a function? var func = function(){ alert('hello!'); }; func.apply(); vs func.call(); Are there performance differences between the two methods? When is it best to use call over apply and vice versa? The difference is that apply lets you invoke the function with arguments as an array; call requires the parameters be listed e

通话和申请有什么区别?

使用call和apply来调用函数有什么区别? var func = function(){ alert('hello!'); }; func.apply(); VS func.call(); 这两种方法之间是否存在性能差异? 什么时候最好使用call apply ,反之亦然? 区别在于apply可以让你用arguments作为数组调用函数; call需要显式列出参数。 有用的助记为“用于对C OMMA 一个 rray和C A”。 请参阅MDN关于申请和通话的文件。 伪语法: theFunction.apply(valueForThis, arrayO

How to append something to an array?

如何在JavaScript中将一个对象(如字符串或数字)附加到数组中? 使用push()函数附加到数组: // initialize array var arr = [ "Hi", "Hello", "Bonjour" ]; // append new value to the array arr.push("Hola"); console.log(arr); If you're only appending a single variable, then push() works just fine. If you need to append another array, use concat() : var ar1 = [1, 2, 3]; var ar2

如何将某些东西附加到数组中?

如何在JavaScript中将一个对象(如字符串或数字)附加到数组中? 使用push()函数附加到数组: // initialize array var arr = [ "Hi", "Hello", "Bonjour" ]; // append new value to the array arr.push("Hola"); console.log(arr); 如果你只追加一个变量,那么push()就可以正常工作。 如果您需要追加另一个数组,请使用concat() : var ar1 = [1, 2, 3]; var ar2 = [4, 5, 6]; var ar3 = ar1.concat(

How do I make the first letter of a string uppercase in JavaScript?

How do I make the first letter of a string uppercase, but not change the case of any of the other letters? For example: "this is a test" -> "This is a test" "the Eiffel Tower" -> "The Eiffel Tower" "/index.html" -> "/index.html" function capitalizeFirstLetter(string) { return string.charAt(0).toUpperCase() + string.

如何在JavaScript中制作字符串大写的第一个字母?

如何使字符串的第一个字母大写,但不改变任何其他字母的大小写? 例如: "this is a test" - > "This is a test" "the Eiffel Tower" - > "The Eiffel Tower" "/index.html" - > "/index.html" function capitalizeFirstLetter(string) { return string.charAt(0).toUpperCase() + string.slice(1); } 其他一些答案修改了String.prototype (

How can I get query string values in JavaScript?

Is there a plugin-less way of retrieving query string values via jQuery (or without)? If so, how? If not, is there a plugin which can do so? You don't need jQuery for that purpose. You can use just some pure JavaScript: function getParameterByName(name, url) { if (!url) url = window.location.href; name = name.replace(/[[]]/g, "\$&"); var regex = new RegExp("[?&]" +

我怎样才能在JavaScript中获取查询字符串值?

是否有无插件方式通过jQuery(或没有)检索查询字符串值? 如果是这样,怎么样? 如果没有,是否有插件可以这样做? 您不需要为此目的使用jQuery。 你可以使用一些纯粹的JavaScript: function getParameterByName(name, url) { if (!url) url = window.location.href; name = name.replace(/[[]]/g, "\$&"); var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"), results

Listen for function after other function is finished

I am loading in html with a RS-JAX GET request. After the request, I need function two to start listening for input. Below is what I tried, however now I am getting two errors: 1) TypeError: functionTwo is not a function. 2) ReferenceError: loadIngredients is not defined. My guess for #2 is that I'm calling it in another function and the var functionOne is messing with it. I wouldn'

在其他功能完成后收听功能

我使用RS-JAX GET请求加载html。 请求后,我需要功能二来开始监听输入。 下面是我尝试过的,但现在我得到两个错误:1)TypeError:functionTwo不是函数。 2)ReferenceError:loadIngredients未定义。 我对#2的猜测是我在另一个函数中调用它,var functionOne正在搞乱它。 我不知道#1。 有没有办法来解决这个问题? 也许通过编辑代码,也许通过另一种方式来监听函数完成时的情况? 功能一 var functionOne = funct

triggering a bind "function" via string versus calling a function

I am working on someone else's code and came across something puzzling. Rather than calling functions the code is calling binding functions and then triggering it through a string. Example 1: bind("hello.world", function(){ console.log("hello world"); }); trigger("hello.world"); Rather than --- Example 2: helloWorld = function(){ console.log("hello world"); } helloWorld();

通过字符串触发绑定“功能”与调用函数

我正在处理别人的代码,并遇到了令人困惑的事情。 代码不是调用函数,而是调用绑定函数,然后通过字符串触发它。 例1: bind("hello.world", function(){ console.log("hello world"); }); trigger("hello.world"); 而不是 - - 例2: helloWorld = function(){ console.log("hello world"); } helloWorld(); 例1和例2有什么优点和缺点?谢谢。 那么,因为JavaScript是一种事件驱动的编程语言,我会推荐

What does the exclamation mark do before the function?

!function () {}(); JavaScript syntax 101. Here is a function declaration : function foo() {} Note that there's no semicolon: this is just a function declaration . You would need an invocation, foo() , to actually run the function. Now, when we add the seemingly innocuous exclamation mark: !function foo() {} it turns it into an expression . It is now a function expression . The ! alon

该功能之前感叹号做了什么?

!function () {}(); JavaScript语法101.这是一个函数声明 : function foo() {} 请注意,没有分号:这只是一个函数声明 。 您需要一个调用foo()来实际运行该函数。 现在,当我们添加看起来无害的感叹号时: !function foo() {}将它变成一个表达式 。 它现在是一个函数表达式 。 ! 当然,单独不调用函数,但我们现在可以在末尾放置() !function foo() {}() ,它的优先级高于! 并立即调用该函数。 所以作者正在做的是

What is the purpose of the var keyword and when should I use it (or omit it)?

NOTE : This question was asked from the viewpoint of ECMAScript version 3 or 5. The answers might become outdated with the introduction of new features in the release of ECMAScript 6. What exactly is the function of the var keyword in JavaScript, and what is the difference between var someNumber = 2; var someFunction = function() { doSomething; } var someObject = { } var someObject.somePropert

var关键字的用途是什么,什么时候应该使用它(或省略它)?

注意 :这个问题是从ECMAScript版本3或5的角度提出的。在ECMAScript 6发行版中引入新功能后,答案可能会过时。 JavaScript中var关键字的功能究竟是什么,以及它们之间的区别是什么 var someNumber = 2; var someFunction = function() { doSomething; } var someObject = { } var someObject.someProperty = 5; 和 someNumber = 2; someFunction = function() { doSomething; } someObject = { } someObject.someProperty =