We want to be able to call a javascript function to replace a value with a query string Key. The examples:
1 2 3 4 | updateURL("https://www.example.com/?name=name&age=25", "name", "hello") 'https://www.example.com/?name=hello&age=25' updateURL("https://www.example.com/?name=name&age=25", "age", 12) 'https://www.example.com/?name=name&age=12' |
updateURL("https://www.example.com/?name=name&age=25", "name", "hello")
'https://www.example.com/?name=hello&age=25'
updateURL("https://www.example.com/?name=name&age=25", "age", 12)
'https://www.example.com/?name=name&age=12'If the query key is not existent, we should add/append one:
1 2 | updateURL("https://www.example.com/?name=name&age=25", "aaaa", "aaa") 'https://www.example.com/?name=name&age=25&aaaa=aaa' |
updateURL("https://www.example.com/?name=name&age=25", "aaaa", "aaa")
'https://www.example.com/?name=name&age=25&aaaa=aaa'URL Query String Key/Value Update with a Javascript Function
The following is the Javascript function that allows us to easily update the query parameters in a URL and also append one if the key parameter (URL query parameters) is not existent in the original URL string.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | /** * Parameter url: the input URL to change * Parameter arg: the querystring key to change * Parameter val: the value to update * Return: the updated URL */ function updateURL(url, arg, val) { const text = arg + '=' + val; const pattern = arg + '=([^&]*)'; if (url.match(pattern)){ let tmp = '/(' + arg + '=)([^&]*)/gi'; tmp = url.replace(eval(tmp), text); return tmp; } else if (url.match('[\?]')) { return url + '&' + text; } return url + '?' + text; } |
/**
* Parameter url: the input URL to change
* Parameter arg: the querystring key to change
* Parameter val: the value to update
* Return: the updated URL
*/
function updateURL(url, arg, val) {
const text = arg + '=' + val;
const pattern = arg + '=([^&]*)';
if (url.match(pattern)){
let tmp = '/(' + arg + '=)([^&]*)/gi';
tmp = url.replace(eval(tmp), text);
return tmp;
} else if (url.match('[\?]')) {
return url + '&' + text;
}
return url + '?' + text;
} –EOF (The Ultimate Computing & Technology Blog) —
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