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Comparing native JS to jQuery for determining presence of input value.

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<form id="provision">
    ESNList:    <input  type="text" id="ESNList" name="ESNList" size="30" /> <br />
    ESN Start:<input type="text" id="ESNStart" name="ESNStart" size="10" /> <br />
    ESN End: <input type="text" id="ESNStart" name="ESNStart" size="10" /> <br />
    UnitName:<input type="text" id="STxName" name="STxName" size="30"  />  <br />  
     Unit Model:   <select name="STxName">
    <option value="stx2">STX2</option>
    <option value="protopak">Protopak</option>
    <option value="stm3" selected>STM3</option>
    <option value="acutec">Acutec</option>
    <option value="mmt">MMT</option>
    <option value="smartone">Trackpack</option>
    <option value="smartoneb" >SmartOneB</option>
    <option value="audi">Acutec</option>
    </select> <br />
    RTU Model Type:
     <select name="rtumodel">
    <option value="globalstar">GlobalStar</option>
    <option value="both">Both</option>
    <option value="comtech">Comtech</option>
    <option value="stmcomtech">STMComtech</option>
    </select> <br />
    <input type="submit" value ="submit"  />
    </form>

Preparation code output

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$(':text').each(function() {
                if($(this).val().length == 0) {
                        $(this).css('border', '2px solid red');
                }
  });

$(':text').each(function() {
                if(this.value.length === 0) {
                        $(this).css('border', '2px solid red');
                }
  });

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