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745 views

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在iframe中点击input框，回到了iframe页面的最顶部，怎么阻止？

如题，请问各位大佬有解决方法或者知道原因吗，就是一个单纯的页面，点击input框聚焦的时候就返回到最顶部了。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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889 views

1 answer

vue v-show为隐藏的时候内部元素的v-if条件还是会去执行？如何优化这种情况？

<div class="container"> <div v-show="currentNum === 1"> <div v-if="elJudge(1)">1</div> <div v-else="elJudge(2)">2</div> </div> <div v ... 目实际情况我这边不能使用两层v-if，因为v-if会让组件重新实例化，这不是我想要的...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

javascript - (node:4) UnhandledPromiseRejectionWarning: Error: undefined is not a valid uri or options object

bot.onText(//igdl (.+)/i, async(msg, match) => { // 'msg' is the received Message from Telegram // 'match' is ... that the link is not valid.. does someone know how to fix this?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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820 views

1 answer

为什么then(console.log(myVar))在函数体内的第一个awiat执行后被callback了

let myVar = "" let asyncAccessURL = async function () { myVar = "landmark1" const f1 = await fetch('https://www. ... console.log(f2); }; asyncAccessURL().then(console.log(myVar))...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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828 views

1 answer

一年数据接近1个亿非结构化数据的场景，用的什么数据库合适？

我们想要全面的记录用户行为，之前买过成熟的统计分析工具（类似百度站长），但想要的很多功能没有，很多不需要的功能倒是挺多的，结果就是成本不低但达不到我们的预期所以考虑自己做套简易的收集系统，搭配本身系统自身能够把数据维度做多一些 ... 写入就不会再更改了非结构化数据量大这些特性出发有没有更合适的简单点的数据库呢莫非必须得走Hbase这些大件才行么？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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python 3.x - Bash run task via ssh and get stdout, stderr live output to file in background

I am running a python 3 script via ssh, and I want to see the stdout and stderr in a file on the remote server. ... The problem is that the ssh is waiting for the script to finish....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

libraries - VS code [python] doesn't run properly

So i've downloaded python two weeks ago, code is working, had few problems on libraries that were interrupted due ... , not sure if newbie mistake or need to reInstall everything...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

element表格在系统字体调为125（中等字体）时，对不齐

表头与表格身体对不齐，试了下面的样式也不行 `.el-table th.gutter{ display: table-cell!important; }`...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.9k views

1 answer

c - pointer of unsigned char array and his pointer has the same value, why?

I have noticed a behaviour that I can't explain it. ` typedef unsigned char mac_address_t[6]; mac_address_t* c = malloc( ... [i] to access to the element? Someone can help me?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

1 answer

JS定时器刷新页面计时重新开始？

问题/疑惑？写一个倒计时，开始时间是系统当前时间，结束时间是在当前时间的基础加上30分钟。目前的效果如图所示：点击"安排人员",下面按钮进行倒计时。存在的问题是: 页面一刷新,再重新进到该页面,计时又重新开始(30:00倒计时)。如何设置倒计时的时间,不会重新计时,不管是页面刷新,还是关闭页面,倒计时的时间不会受到影响? 请大家给支支招。...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.3k views

1 answer

jdk 8 有支持类似jshell 类似的工具吗？

因为平时要写一下类似测试的代码，有没有这个jdk类似jshell 的因为jshell 是jdk9以上才可以用的...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.5k views

1 answer

javascript - Socket.io and Heroku: can the app save collaborative writing results?

I want to code a collaborative writing project that "lives" online. One user types something and if the next user comes ... if this not the right forum for this kind of questions....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.8k views

1 answer

javascript - Why do I get this error - Functions are not valid as a React child. This may happen if you return a Component instead of <Component /> from render

I am trying to set this video to be rendered and it works but for some reason I get the error from the title and ... /VideoRenderer> return( <BoatStyle> {video} </BoatStyle> ) } }...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.9k views

1 answer

bluetooth lowenergy - BlueNRG wrong header

I bought STEVAL-MKSBOX1V1 of ST and wanted to write my own library to create a BLE application. The BLE module on ... would like to have a bit of consulting. Thanks in advance...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.3k views

1 answer

element tree 卡顿的问题

项目中需要用到 element 的 el-tree 树控件，但是不能使用延迟加载，数据大概 2000 条，没钱非常卡，大家怎么解决呢？谢谢！...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

database - How to authenticate a request to AWS Redshift through IDP with restricted access to S3 data?

Here is the flow: A user will try to authenticate to Redshift, and this auth request should flow over to my personal ... if anything is added to S3, it should appear in Redshift....

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

How to handle json list in spring java for jira api

I'm trying to get a list of some issues on a jira board. I'm trying to extend the tutorial project on the spring ... valueList; //getter and setter The output I get is just []...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.6k views

1 answer

laravel - .htaccess 404 error with webp conversion in October CMS plug-in

Having difficulties with a third-party plug-in ("ResponsiveImages") in October CMS. The plugin converts images to webp. Some images are ... </h2> </a> </div> </div> </div>...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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4.3k views

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authentication - Authenticate API in .net core using ping identity OAuth2.0

Problem Statement : I want to secure APIs using ping identity OAuth 2.0. I am following this blog ... Route("[controller]")] public class WeatherForecastController : ControllerBase...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.6k views

1 answer

element-ui el-tree check事件不触发

需求是在给树形组件的复选框去除勾选的时候，要调用后端的接口，判断该节点是否被使用，如果使用就不能去勾选，刚开始用的是check-change方法，但是，会调用后端两次，，看到网上说，可以用check方法避免此问题，但是，我用check后就是不触发事件，，没有头绪，求大神指教。万分感谢！！！！...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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4.0k views

1 answer

JavaScript forEach() 方法

上面这样可以正确输出为啥第二种写法就报错了呢？...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

React组件通信?

有这样一个组件数结构，如何实现当B执行某个方法之后，触发D中的某个方法\\(由B通知A，再由A层层往下调用不考虑\\)?或者说这个组件结构本身是否存在问题？...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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4.2k views

1 answer

javascript - How can I Execute NodeJS Server Client Side With Html Button Or Alternative If Not Possible?

Intro: Hello. So I started on a chat based social media app with Socket.io, but it seems like the client needs ... development for school and I just want some clarity. Thank you!...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.6k views

1 answer

matlab cvst - boundary error of image processing Index exceeds matrix dimensions. error

The name of the fruit captured by the camera. Dimensional analysis and color analysis were done. I can't get results due to error. I run a ... Color', [1 0 0], ... // K?rm?z? color...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.5k views

1 answer

wepy框架 v-for循环渲染失效

直接上图： wepy2.0文档我的码：效果：醉了！为什么渲染不了背景颜色和文字？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.9k views

1 answer

r - Quantifiying changes in landcover classes from raster into tabular form

I'm trying to calculate habitat changes through the difference in pland values between 2010 ... change grassland_to_cropland 4% grassland_to_barren 2% barren_to_grassland 1%...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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3.6k views

1 answer

reactjs - Blank screen with expo locations and perns

I am trying to implement location services that give the leaflet map the coords of the user after they agree to the permissions. While I ... {x}/{y}.png" /> </MapContainer> ); } }...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.2k views

1 answer

关于受控非受控组件的一些疑问，客官进来看看

React文档里面对受控和非受控组件做了说明，但是貌似只拿表单做类比，所谓受控就是这类表单数据的变化的过程都能被react控制，如果只给初始值defaultValue，那么它是一个非受控组件个人的简单理解就是你能控制这个组件的输入，和变化， ... 控，如果影响初始值的这个逻辑，在子组件中进行捕获，然后再做处理，这个时候是受控还是非受控？还是间歇受控？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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