JSFiddle - React, Tailwind, and code Playground
HTML
<div class="text text1"></div>
<div class="text text1 text2"></div>
JavaScript
var t = document.querySelectorAll(".text.text1:not(.text2)");
console.log(t);
<div class="text text1"></div>
<div class="text text1 text2"></div>
var t = document.querySelectorAll(".text.text1:not(.text2)");
console.log(t);