How do I handle an if condition in jQuery -

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i have class has image

<a class="proceed-btn right" onclick="validateall();" style="cursor: pointer;">proceed next step >>></a>

which has css

.proceed-btn {   background:url("images/proceed-btn.gif") no-repeat scroll 0 0 transparent;   height:35px;   width:275px; }

then on same page have these input fields , links

<input type="text" id="name" name="name" value="" class="field left"> <input type="text" id="company" name="company" value="" class="field left"> <input type="text" id="email" name="email" value="" class="field left">  <a onclick="setindustry('3');" style="cursor: pointer;" class="industry_links highlight">retail</a>  <a onclick="setsystems('5');" style="cursor: pointer;" class="count_links highlight">5</a>

i want make top button have .new_button class when following met

.new_button { background-position: 0 -35px; text-decoration: none; color: #fff; }

there @ least 1 letter each of text fields , both industry_links , count_links classes have @ least 1 class highlight class

basically want change color of button when 5 met

sorry confusing

var allhaveatleastoneletter = true; $("input[type='text']").each(function(){ allhaveatleastoneletter && ($(this).val().length > 0 )});  var industrylinkshashighlight = $(".industry_links.highlight").length > 0;  var countlinkshashighlight = $(".count_links.highlight").length > 0;  if(allhaveatleastoneletter && industrylinkshashighlight && countlinkshashighlight){    $("proceed-btn.right").addclass("new_button"); }

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