#Asc

null in JavaScript

C#String.IsNullOrEmptyJavascriptequivalenthttps://stackoverflow.com/questions/5746947/c-sharp-string-isnullorempty-javascript-equivalentif(!theString){alert("th...
代码星球 代码星球·2021-02-08

第一章 JavaScript简介

 http://www.w3school.com.cn/js/pro_js_implement.asp出自《JavaScript高级程序设计(第3版)》1997年,以JavaScript1.1为蓝本的建议被提交给了欧洲计算机制造商协会(Ecma,EuropeanComputerManufacturersAss...
代码星球 代码星球·2021-02-08

第二章 在Html中使用JavaScript

https://www.jianshu.com/p/8247a9401725https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script<script>定义了下列6个属性:  async:可选。async属性规定一旦脚本...

Chrome格式化JavaScript

在network或者source的tab中找到对应的JavaScript文件重点在右下角的{}图标,点击一下,就会帮你自动格式化了https://plus.google.com/+AddyOsmani/posts/Q7t2U51G7YR ...
代码星球 代码星球·2021-02-08

Chrome查看JavaScript函数

在页面上右键viewpagesource(Ctrl+U),然后在弹出来的界面可以查找JavaScript函数 注意:这个只能看到内嵌在网页上的JavaScript函数一般来讲,JavaScript函数都是单独写在js文件中的:F12调出菜单,选择Network,然后选择JS ...

visual studio , JavaScript , UnitTest

https://docs.microsoft.com/en-us/visualstudio/cross-platform/tools-for-cordova/debug-test/basic-tests-with-jasmine?view=toolsforcordova-2017npminstall--save-dev...

JavaScript中的string interpolation

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literalsvara=5;varb=10;console.log(`Fifteenis${a+b}andnot${2*a+b}.`);//"Fifteenis15an...

JavaScript面试题

https://segmentfault.com/a/1190000008785931https://www.codementor.io/nihantanu/21-essential-javascript-tech-interview-practice-questions-answers-du107p62zhttps:...
代码星球 代码星球·2021-02-08

NaN in JavaScript

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaNTheglobalNaNpropertyisavaluerepresentingNot-A-Number. NaNisapropertyoft...
代码星球 代码星球·2021-02-08

ResolveUrl in external JavaScript file in asp.net project

https://stackoverflow.com/questions/11263425/page-resolveurl-is-not-working-in-javascriptTheproblem,asponchapointedout,isthatasfarasASP.NETisconcerned,theconten...

Loop through an array in JavaScript

https://stackoverflow.com/questions/3010840/loop-through-an-array-in-javascript?page=1&tab=votes#tab-topUseasequential for loop:varmyStringArray=[...
代码星球 代码星球·2021-02-08

What's the difference between using “let” and “var” to declare a variable in JavaScript?

https://stackoverflow.com/questions/762011/whats-the-difference-between-using-let-and-var-to-declare-a-variable-in-javThedifferenceisscoping. var issc...

CodeWars上的JavaScript技巧积累

The slice() methodreturnsashallowcopyofaportionofanarrayintoanewarrayobjectselectedfrom begin to end (end notincluded).Theori...

Is it bad to rely on foreign key cascading? 外键 级联操作

I'llpreface前言thisbysayingthatIrarelydeleterowsperiod.Generallymostdatayouwanttokeep.Yousimplymarkitasdeletedsoitwon'tbeshowntousers(ietothemitappearsdeleted).Of...
代码星球 代码星球·2021-02-08

Unicode, UTF, ASCII, ANSI format differences

 问题:WhatisthedifferencebetweentheUnicode,UTF8,UTF7,UTF16,UTF32,ASCII,andANSIencodings?Inwhatwayarethesehelpfulforprogrammers? 解答:Goingdownyourlist:"Un...
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