使用正则表达式引用JavaScript对象键？

Question

I have some key value pairs like this inside a string:

const process = 
`
abeezee: "ABeeZee",
abel: "Abel",
abhaya-libre: "Abhaya Libre",
`

I need to quote the keys such that the entire thing becomes valid json when wrapped with {} . However not sure how to do this using a regex?

The end result needs to look like this:

"abeezee": "ABeeZee",
"abel": "Abel",
"abhaya-libre": "Abhaya Libre",

Answer 1

You don't need regex here, you can achieve that result using Array.split .

 const process = `abeezee: "ABeeZee", abel: "Abel", abhaya-libre: "Abhaya Libre"`; const result = process.split(',\\n') .map(line => { const [key, value] = line.split(':'); return `'${key}':${value}`; }) .join(',\\n'); console.log(result); 

Answer 2

You may use this code snippet:

 const process = ` abeezee: "ABeeZee", abel: "Abel", abhaya-libre: "Abhaya Libre", ` var jsonstr = '{' + process.replace(/^[^\\s:]+/gm, '"$&"').replace(/,\\s*$/, '\\n') + '}'; console.log( jsonstr ) /* == Output == { "abeezee": "ABeeZee", "abel": "Abel", "abhaya-libre": "Abhaya Libre" } */ 

Answer 3

You also need to trim the trailing comma and surround it with {} to have valid JSON:

 const process = ` abeezee: "ABeeZee", abel: "Abel", abhaya-libre: "Abhaya Libre", `; const json = '{\\n' + process .replace(/^\\s*|[\\s,]*$/g,'') // trim trailing comma and leading/trailing whitespace .replace(/^/gm, ' "') // Add quotes at beginning of lines .replace(/^([^:]*):/gm, '$1":') // Add quotes before the first colon on each line + '\\n}'; console.log( json );