JSFiddle - React, Tailwind, and code Playground
HTML
<span class='node closed' id='1' onclick="doExpandCollapse(this)"></span>
<span class='node closed' id='2' onclick="doExpandCollapse(this)"></span>
JavaScript
function doExpandCollapse(element){
console.log(element.id);
}
var el = document.getElementsByClassName('node closed');
for (var i=0;i<el.length; i++) {
console.log('test');
el[i].click();
}