<script type="text/javascript">
        if($("#_regular_price").length > 0) {
            $("#snippet-editor-field-description").text('labas')
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</script>

<script type="text/javascript">

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        alert('clicked');
    });

</script>

<script type="text/javascript">

    $(document).on('click','#snippet-editor-field-description', function() {
        alert('clicked');
    });

</script>