Some non-unique fixed point or periodic point results in JS-metric spaces

In this article, we give an emphasis to some non-unique fixed point or periodic point results involving ZD\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathcal {Z}_D$$\end{document}-contractions and generalized Meir–Keeler contractions in the setting of JS-metric spaces. Our theory extends, improves, and unifies several recent results in the existing literature. Moreover, we interpolate constructive examples and a couple of consequences to endorse the validity of the conceived results.