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

JSFiddle - React, Tailwind, and code Playground

HTML

<fieldset class="ui-dform-fieldset"><input type="text" id="totalRetryCount" name="totalRetryCount" tabindex="1" onblur="validateElement('Configuration', 'testSuiteConfigurationform','totalRetryCount')" class="ui-dform-text"><legend class="ui-dform-legend">Total Retry Count</legend><label id="dd" for="totalRetryCount" class="error">Please enter a valid number.</label></fieldset>

JavaScript

if($("#totalRetryCount").siblings('label').hasClass('error')){
      alert('-sdafs-');
}

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