Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

HTML

<div class="close-image" imageid="11" terminalid="100"></div>
<div class="close-image" imageid="10" terminalid="100"></div>
<div class="close-image" imageid="12" terminalid="100"></div>
<div class="close-image" imageid="11" terminalid="100"></div>
<div class="close-image" imageid="10" terminalid="100"></div>
<div class="close-image" imageid="12" terminalid="100"></div>

JavaScript

var pushObj = {};
$('.close-image').each(function () {
    pushObj[$(this).attr('imageid')] = true;
});

var res = [];
for (var i in pushObj) {
    res.push(i);
}
console.log(res)

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JSFiddle - React, Tailwind, and code Playground

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