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JavaScript中是否有常量? - Are there constants in JavaScript?

问题: Is there a way to use constants in JavaScript? 有没有办法在JavaScript中使用常量? If not, what's the common practice for specifying variables that are used as constants? ...

2020/04/10 06:31
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JavaScript控制台中的颜色 - Colors in JavaScript console

问题: Can Chrome's built-in JavaScript console display colors? Chrome的内置JavaScript控制台可以显示颜色吗? I want errors in red, warnings in orange and console.log 's in green...

2020/04/22 17:16
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遍历JavaScript中的数组 - Loop through an array in JavaScript

问题: In Java you can use a for loop to traverse objects in an array as follows: 在Java中,可以使用for循环遍历数组中的对象,如下所示: String[] myStringArray = {"Hello", "Worl...

2020/05/30 16:00
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在JavaScript中修剪字符串? - Trim string in JavaScript?

问题: 如何修剪JavaScript中的字符串? 解决方案: 参考一:https://stackoom.com/question/25nu/在JavaScript中修剪字符串 参考二:https://oldbug.net/q/25nu/Trim-string-in-JavaScript...

2020/04/06 04:27
4
如何格式化JavaScript日期 - How to format a JavaScript date

问题: 如何格式化JavaScript日期对象以将其打印为10-Aug-2010 ? 解决方案: 参考一:https://stackoom.com/question/Eu9l/如何格式化JavaScript日期 参考二:https://oldbug.net/q/Eu9l/H...

2020/06/03 16:06
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是什么 !! (不是)JavaScript中的运算符? - What is the !! (not not) operator in JavaScript?

问题: I saw some code that seems to use an operator I don't recognize, in the form of two exclamation points, like so: !! 我看到了一些似乎使用不认识的运算符的代码,它以两个感叹...

2020/05/30 19:00
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JavaScript中变量的范围是什么? - What is the scope of variables in JavaScript?

问题: What is the scope of variables in javascript? javascript中变量的范围是什么? Do they have the same scope inside as opposed to outside a function? 它们在函数内部和外部的作...

2020/03/29 12:48
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JavaScript中变量的范围是什么? - What is the scope of variables in JavaScript?

问题: What is the scope of variables in javascript? javascript中变量的范围是什么? Do they have the same scope inside as opposed to outside a function? 它们在函数内部和外部的作...

2020/08/03 23:56
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如何使用JavaScript重定向? [重复] - How do I redirect with JavaScript? [duplicate]

问题: This question already has an answer here: 这个问题在这里已有答案: How do I redirect to another webpage? 如何重定向到其他网页? 58 answers 58个答案 How do you redirect to...

2020/06/21 05:29
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如何使用JavaScript复制到剪贴板? - How do I copy to the clipboard in JavaScript?

问题: What is the best way to copy text to the clipboard? 将文本复制到剪贴板的最佳方法是什么? (multi-browser) (多浏览器) I have tried: 我试过了: function copyToClipboard(t...

__proto__VS。 JavaScript原型 - __proto__ VS. prototype in JavaScript

问题: This figure again shows that every object has a prototype. 该图再次显示每个对象都有一个原型。 Constructor function Foo also has its own __proto__ which is Function.protot...

如何正确克隆JavaScript对象? - How do I correctly clone a JavaScript object?

问题: I have an object, x . 我有一个对象x 。 I'd like to copy it as object y , such that changes to y do not modify x . 我想将其复制为对象y ,以使对y更改不会修改x 。 I realized...

2020/07/31 04:22
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整数除以JavaScript中的余数? - Integer division with remainder in JavaScript?

问题: In JavaScript, how do I get: 在JavaScript中,我如何获得: the whole number of times a given integer goes into another? 给定整数进入另一个整数的整数倍? the remainder? 剩下...

2020/04/21 05:44
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在JavaScript中将字符串转换为日期 - Converting a string to a date in JavaScript

问题: How can I convert a string to a date in JavaScript? 如何在JavaScript中将字符串转换为日期? var st = "date in some format" var dt = new date(); var dt_st= //st in date fo...

2020/05/12 06:09
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JavaScript等同于printf / String.Format - JavaScript equivalent to printf/String.Format

问题: I'm looking for a good JavaScript equivalent of the C/PHP printf() or for C#/Java programmers, String.Format() ( IFormatProvider for .NET). 我正在寻找一个等效于C / PHP p...

在JavaScript中解析JSON? [重复] - Parse JSON in JavaScript? [duplicate]

问题: This question already has answers here : 这个问题已经在这里有了答案 : Safely turning a JSON string into an object (24 answers) 安全地将JSON字符串转换为对象 (24个答案) ...

2020/08/06 19:01
45
获取Javascript数组中的最后一项 - Get the last item in an array in Javascript

问题: Here is my JavaScript code so far: 到目前为止,这是我的JavaScript代码: var linkElement = document.getElementById("BackButton"); var loc_array = document.location.href.sp...

2020/06/17 22:54
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在JavaScript中解析JSON? [重复] - Parse JSON in JavaScript? [duplicate]

问题: This question already has answers here : 这个问题已经在这里有了答案 : Safely turning a JSON string into an object (24 answers) 安全地将JSON字符串转换为对象 (24个答案) ...

2020/06/06 08:09
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如何测试一个空的JavaScript对象? - How do I test for an empty JavaScript object?

问题: After an AJAX request, sometimes my application may return an empty object, like: 在AJAX请求之后,有时我的应用程序可能返回一个空对象,例如: var a = {}; How can I check ...

2020/03/26 07:44
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从JavaScript数组获取随机值 - Getting a random value from a JavaScript array

问题: Consider: 考虑: var myArray = ['January', 'February', 'March']; How can I select a random value from this array using JavaScript? 如何使用JavaScript从此数组中选择随机值?...

2020/07/04 18:48
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