Check out my json file below:
{
"foo": "https://3a1821d0.ngrok.io/api/foo",
"bar": "https://3a1821d0.ngrok.io/api/bar",
}
I am interested in changing the key 3a1821d0 to a different variable within the json structure, like so:
{
"some_variable": 3a1821d0,
},
{
"foo": "https://some_variable.ngrok.io/api/foo",
"bar": "https://some_variable.ngrok.io/api/bar",
}
Wondering if this is doable? And if it is, what would be the process for achieving it?
To prevent any conflicts with the replacement, I suggest enclosing the occurrences you wish to replace within [] or another character of your choice. Save your file as data.json and here is an example of its contents:
{
"some_variable": "3a1821d0",
"foo": "https://[some_variable].ngrok.io/api/foo",
"bar": "https://[some_variable].ngrok.io/api/bar"
}
If you are working with Node.js, this script will help you accomplish the task.
const fs = require('fs');
let fileData = fs.readFileSync('data.json', "utf-8");
let jsonContent = JSON.parse(fileData);
const someVar = jsonContent.some_variable;
// Adding null and 4 helps maintain the file's format
let jsonDataStr = JSON.stringify(jsonContent, null, 4);
// Replace all instances of [some_variable] with the content of "some_variable"
jsonDataStr = jsonDataStr.split('[some_variable]').join(someVar);
// Rewrite the file
fs.writeFileSync('output.json', jsonDataStr);
Here is a technique you can utilize to substitute a matched content with your preferred content. Just switch test with the text you want.
let data ={
"foo": "https://3a1821d0.ngrok.io/api/foo",
"bar": "https://3a1821d0.ngrok.io/api/bar",
}
Object.keys(data).forEach(key => data[key] = data[key].replace(/3a1821d0/,"test"))
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