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JavaScript: ¿Cómo obtener el primer parámetro, en realidad la primera clave de la URL?

Estoy tratando de obtener la primera clave de la URL, así:

 const currentUrl = window.location.href; const parmsFromUrl = new URLSearchParams(currentUrl); const paramToCheck = parmsFromUrl.keys[0];

Pero constantemente me quedo indefinido, ¿alguien puede decirme cómo obtener solo el primer parámetro, no un valor, solo quiero la clave? Gracias.

about 4 years ago · Juan Pablo Isaza
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Con URLSearchParams tienes que usar window.location.search

Con URL tienes que usar window.location.href

 const currentUrl = window.location.search; const parmsFromUrl = new URLSearchParams(currentUrl);

URLSearchParams.keys() devuelve un iterador, por lo que debe usar next() para obtener el primer valor

 const paramToCheck = parmsFromUrl.keys().next().value;
about 4 years ago · Juan Pablo Isaza Report
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