script tag

1639 questions

1 answers
71 views
0

I want to use useContext in React, TypeScript, but I can't resolve the error.

We are currently developing a web application using firebase.I use React and TypeScript.Error writing context to keep user credentials.It's my first time creating a front-end app by myself, and I'm ha...

reactjs typescript

1 years ago

2 answers
93 views
0

Save the Canvas image to the camera roll

I'm making an application for smartphones with html5.I'm using Canvas to create an image in the app, and I don't know how to save the image to the iOS camera roll.(Drawing is done) Implementation of d...

javascript angularjs cordova html5-canvas

1 years ago

1 answers
105 views
0

How to register a file upload implemented in dropzone from papeteer

I have implemented the function of accessing the page from papeteer and registering by automatically entering the form, but I am worried about how to register the image for the file upload implemented...

javascript puppeteer

1 years ago

1 answers
33 views
0

Subscribe to browsers using Javascript with MQTT

At MQTT, I'm thinking about using JavaScript to subscribe to my browser.JavaScript sources include:The mqttws31.js file is already in the same directory as index2.html.Nothing happens on the browser, ...

javascript

1 years ago

2 answers
42 views
0

Asynchronous communication introduces conversation functionality, but data cannot be displayed without reloading the page.

I am thinking of introducing a conversation function through asynchronous communication.Data can be displayed without page movement, but it cannot be displayed without page movement or reloading.If an...

javascript ruby-on-rails ruby jquery

1 years ago

2 answers
32 views
0

document.variable role

document. The variable role is unknown.http://cya.sakura.ne.jp/java/calc.htmI am studying javascript while looking at the site. document.myForm.myLine.value=myInput;I don't know what the line is doing...

javascript

1 years ago

1 answers
73 views
0

Understanding How to Get Property Names in a Union Class

First, prepare two class-based components.class AdminInfoComponent { public userCount: number = 0;}class UserComponent { public id:string=; public createdAt: number = 0;}Next, create a type to get the...

typescript

1 years ago

2 answers
30 views
0

About event listeners.

I'm learning about Javascript event listeners.If you say click_01(), click_02(), click_03(), as shown in the source code below, the button is clicked without pressing the button.Why?<body><in...

javascript

1 years ago

1 answers
118 views
0

I want to change the cluster icon to click event

Using googlemapsAPI to view clusters.I want to change the icon when I click on the cluster, but it doesn't change.I am referring to the following.https://googlemaps.github.io/v3-utility-library/classe...

javascript google-maps

1 years ago

1 answers
40 views
0

Retrieve the number of files in the folder and use them for new file names

▽ PurposeGAS has created a script to convert Excel files into spreadsheet files.In order to serialize the spreadsheet name, I tried to retrieve the number of files in the folder and use them as file n...

google-apps-script

1 years ago

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