i have a url search key like that: ?retailerKey=A and i want to grab the retailerKey substring. All examples that i saw are having as example how to take before the char with the indexOf example. How can i implement this to have this substring from the string ?retailerKey=A
2
-
I've read your question twice and still don't know what's your desired output. Could you clarify?A_A– A_A2021-12-03 12:59:35 +00:00Commented Dec 3, 2021 at 12:59
-
2Besides that, what about using URLSearchParams?A_A– A_A2021-12-03 13:00:04 +00:00Commented Dec 3, 2021 at 13:00
Add a comment
|
4 Answers
You could split() the string on any ? or = and take the middle item ([1]) from the outcome array.
const data = "?retailerKey=A";
const result = data.split(/[\?=]/)[1];
console.log(result);If you have multiple params, creating an object fromEntries() would be interesting.
const data = "?retailerKey=A?otherKey=B";
const keyVals = data.split(/[\?=]/).filter(x => x); // keys and values
const result = Object.fromEntries(keyVals.reduce((acc, val, i) => {
// create entries
const chunkI = Math.floor(i / 2);
if (!acc[chunkI]) acc[chunkI] = [];
acc[chunkI].push(val);
return acc;
}, []));
console.log(result);
Comments
use regex expression.
Following will return the value between character ? and =
var result = "?retailerKey=A".match(/\?(.*)\=/).pop();
console.log(result);
Comments
If you would like to always get the string between your query sign and equal sign ?ThisString=
then you can simply use indexOf for example
str.slice(str.indexOf('?')+1,str.indexOf('='))
Comments
Using library could be a better choice but to do it from scratch : I suggest to use split with a regular expression.
// split for char equals to ? or & or =;
const url = '/toto?titi=1&tata=2';
const args = url.split(/[\?\&\=]/);
// shift the first element of the list since it the base url before "?"
args.shift();
// detect malformed url
if (args.length % 2) {
console.error('malformed url', args);
}
const dictArgs = {};
for (let i = 0; i < args.length /2; i ++) {
const key = args[2*i];
const val = args[2*i+1];
dictArgs[key] = val;
}
console.log(dictArgs);
