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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 for="totalRetryCount" class="error">Please enter a valid number.</label></fieldset>

JavaScript

if($(".ui-dform-fieldset label").hasClass('error')){
        alert('-sdafs-')
    }

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JSFiddle - React, Tailwind, and code Playground

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