Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteUse the browser’s built-in URLSearchParams API to read query parameters in a jQuery application. For the current page, create it from window.location.search, then call .get() with the parameter name. No jQuery-specific parser is needed.
Read a parameter from the current page URL
window.location.search returns the current URL’s query string, including its leading ?. Pass it to URLSearchParams, then retrieve a value with .get():
const params = new URLSearchParams(window.location.search);
const value = params.get("name");For example, if the address is https://example.com/?id=42, then params.get("id") returns the string "42". The pattern is documented in MDN’s URLSearchParams.get() reference.
Check for a missing parameter
.get() returns null when the key is absent. Check for that explicitly, and treat a present value as a string unless you validate or convert it for a specific purpose:
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const params = new URLSearchParams(window.location.search);
const id = params.get("id");
if (id !== null) {
// Validate or convert id if the application needs another type.
}Handle repeated query parameters
When a query string contains the same key more than once, such as ?tag=red&tag=blue, .get("tag") returns only the first value. Use .getAll() when every occurrence matters:
const tags = new URLSearchParams(window.location.search).getAll("tag");
// ["red", "blue"]MDN documents .get(), .getAll(), and related query-string utilities in its URLSearchParams reference.
Parse a complete URL instead of just its query string
URLSearchParams expects query-string input, not a complete URL. If you have a full URL string, create a URL first and read its .searchParams:
const url = new URL("https://example.com/?name=Sam");
const value = url.searchParams.get("name");For the current page, the equivalent full-URL form is new URL(window.location.href).searchParams. The URL.search property contains the query string beginning with ?, or an empty string if there is no query; see MDN’s URL.search documentation.
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Decoding and compatibility considerations
URLSearchParams handles percent-encoded query data and converts + to a space during parsing. Do not manually decode a value that it has already returned. If you modify parameters and serialize the URL again, serialization can represent spaces differently; consult MDN’s URLSearchParams examples if exact URL serialization matters.
MDN describes URLSearchParams as widely available across browsers since April 2018. That is a broad compatibility indication, not a guarantee for every legacy or embedded browser. Check the browser requirements for your application if it must support unusually old clients; MDN’s URL API overview includes compatibility information.
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