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javascript - Include a base64 tag at the start of each script from an Angualr project

In my index.html file in my angular project I have a script tag in the page head that looks something like this. ... because they are not directly linked to the index.html file....

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

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echarts timeline

echarts 中的timeline是不是可以根据data属性找到option中对应的数据比如：timeline.data=['2002-01-01','2003-01-01',],然后option中series.data=[ [{year ... "2004-01-01",value:22},{year:"2004-01-01",value:27}] ]...

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

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196 views

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Flutter cant show string color code in color

I need to show the color from in my container. Mean i have color codes in string format and i need to use as the ... 'Color'. Can any one please tell how can i show this ?...

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

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nodejs 连接mysql查询数据,根据什么来判断查询成功？

如题，使用以下语句查询后，要怎么判断查询成功或失败？例如 select * from user where id=1，想要判断数据库是否存在id=1这条数据的话该如何写？ connection.query(sql,sql_params,(err,result)= ... ?){ //数据存在，如何取值做对比？ }else{ //数据不存在，执行其它... }...

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

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docker 在执行 npm ERR! 报错第七步错误 node-sass

...

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

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447 views

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请问如下能不能让悬浮的时候，div展示为html标签，而不是html全部显示出来。

<!DOCTYPE html> <html lang="en"> <head> <style> span:hover::after { content: attr(data-tooltip); } </style> <meta charset="UTF- ... /div>">Hover Me!!!</span> </div> </body> </html>...

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

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thinkphp6表单处理问题?

这是一个用户列表页，如果我想点击，右侧的按钮如何实现，用户数据的修改？目前我想到是通过ajax去请求数据，用数据库里的数据去填充表单，修改好再重新提交，请问下是否还有更好方法。...

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

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Running gnuplot on java

I′m running a java project using gnuplot to generate charts in pdf but I want to save those files in another folder outside my ... System.out.print(line + " "); } proc.waitFor();...

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

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217 views

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javascript - Cannot set a global variable inside a onload method

I am building an Angular 9 app. In this app I got an image upload component. In order to make sure the right ... this.uploadQueue.push(file); } // this.submitUploadForm(); }...

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

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327 views

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请问大家不喜欢用 SP 来缩小 inert sql 字串?

像是见过的例子一个表格 A 有 30 个栏位要insert 的时候常看到这样写 insert A (column1,column2....column30) values ('value1','value2'....'value30 ... 'value1','value2'....'value30' 缩小字串大小 45%，可以减少网路传输量...

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

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javascript - NextJS only renders homepage post build

I am making a website on [email protected], In pre-build scenario everything works fine but after running next build and ... _next/ 404.html index.html sports.html about.html Images/...

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

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271 views

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postgresql - SQL (Postgres): ON vs WHERE for better performance

I have a person and a task table. The task table is much bigger and contains millions of rows. With the following ... second statement as well? I cannot change the SQL statement....

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

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DolphinDB数据库在数据写入时有没有时间顺序性的要求？

在使用DolphinDB数据库写入数据时，需要按照时间顺序排序写入吗？...

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

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485 views

1 answer

lombok是不是加了@data标签后不应该自己手动再去写tostring方法？

开发过程中发现一个问题，要是用Lombok注释的bean如果自己手写了tostring方法的话，要是bean在增加字段的时候会出现mybatis查询出来的数据没有新加的那个字段，只有在tostring方法里把那个新加的字段加上后才会把那个字段值查出来，这是因为lombok的原因吗？...

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

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257 views

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javascript - Javasript check current datetime with loop 2 between datetimes

I'm working with time loop. var startShow = []; var endShow = []; for(var i = 0; i < jsonStr[4]. ... there is a currentTime between startShow and endShow match with my above code?...

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

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532 views

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android studio如何为AAR引用指定的supprot包

一个老项目还没有升级androidX，我在根gradle中强制了所有supprot的版本 configurations.all?{ ????resolutionStrategy?{ ????????force?'com.android. ... { exclude group: 'com.android.support' } 如果是单独指定怎么写呢...

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

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php - How to calculate total price of multiple items in cart in Laravel?

I have a carts table where column is----> "id", "user_id", "product_id", "quantity". See the image here is ther ... to do that? Here is the cart model Here is the product model...

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

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514 views

1 answer

vue项目升级命令 vue upgrade 无效

项目是基于 vue-cli 3.x 的，运行起来太慢了，每次执行npm run dev估计都得2分钟甚至更长，所以打算把脚手架升级到@vue/cli 4来试一下。现在已经卸载 vue-cli 3 了，并且安装好 @vue/cli 4，但是当我执行 vue upgrade 来升级项目是，却提示我已经是最新了。如下：该怎么处理呢？...

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

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545 views

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关于MySQL用户权限的问题

MySql创建用户或角色后，该用户默认也是可以创建用户或角色的吗？如果没有创建用户的权限，那么应该如何给该用户或角色授予创建用户和角色的权限呢？...

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

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570 views

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el-date-picker的css修改

现在使用日期选择框，只想要下面的日不想要上面的年月怎么做在火狐的css调试上加一个display：none就可以了，但是在代码中用穿透和伪元素都无法实现 .myDatePicker>>>. ... } .myDatePicker>>>.el-date-picker__header { display: none !important; } 这应该再怎么修改...

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

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698 views

1 answer

terminal - Trying to create new flutter project

Hi I am new to fluter just starting out. I am trying to create my first flutter app with these steps: Create and run a ... . (goes down to 42 different ones.) Any help is welcomed....

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

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676 views

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java - Spring boot 404 error Not found error in multi module project

I'm trying to run my first spring boot multi-module project. by calling from postman http://localhost:8080/ ... Modules dependencies to make this code working Thank in advance!...

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

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671 views

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Select first non-NA value using R

df<-data.frame(ID = c(1,1,1,2,3,3,3), test = c(NA, 5.5, 6.4, NA, 7.3, NA, 10.9)) I want to create a variable called "value", ... ), value = c(5.5, 5.5, 5.5, NA, 7.3, 7.3, 7.3))...

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

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814 views

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python 3.x - How to make Pandas dataframe run on multiple cores?

I have around 5 million rows being processed in pandas dataframe & its taking about 45 minutes.There are multiple ... all available nodes & reduce the total transformation time ?...

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

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c# - Problem with displaying glx_context - If you create GLArea using Gtk.DrawingArea for GtkSharp 2.x?

I have problem with showing of glx_context without GLib.Idle.Add(idlehandle) Code in Gist Result: It doesn't see ... glx_context on DrawingArea ( GLWidget )? Please tell me safe!...

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

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810 views

1 answer

小程序下拉刷新为什么卡住不动？

真机调试下拉刷新时我看到已经触发onPullDownRefresh方法了但是那个动画一直都在动这是怎么回事？...

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

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934 views

1 answer

访问本地图片报跨域怎么回事？

Access to image at 'file:///C:/Users/1/Desktop/%E6%B0%B4%E6%B3%A2%E7%BA%B9/img/bg2.jpg' from origin 'null' has been blocked ... position: 50% 0; height: 100%; text-align: center; }...

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

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900 views

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函数内部的变量被全局变量使用，此函数是否会销毁？

闭包是函数内部嵌套一个函数，内部函数被全局变量使用，所以无法释放但如果函数内部有一个引用类型（不是函数），作为返回值给全局变量使用，此函数会销毁吗？ function f1() { var a={}; return a; } var b=f1( ... ) 另外，根据闭包的定义，函数嵌套的子函数会形成闭包那么如上例子即使作用域无法释放，应该也不叫闭包吧？...

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

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