Find the number of lines in a div

Question

I want to show 'View All' kind of link, only when the lines in the div has reached 4 lines.

HTML

<div>
    3PAS-Pub-IO-doubleclick.net-LI, ATOM_DFP_Pub_LI, AUG12_Zynga.com_MafiaWars2_0.10$_CPM,
    ATOM_Macro_Jivox Testing,   Sep 11 Head and Shoulder Innovation - Do Not Bill, 123Greetings - IN Do Not Pay_Second, 
    July 11_Affinity.com_Fiat Linea_CPL 55, 3PAS-Pub-IO-atdmt.com-LI, 2_Affinity_RealEstate_CPC_2.8_INR_2nd,
    AUG12_Zynga.com_treasureIsle_0.10$_CPM, AUG12_Zynga.com_theville_0.10$_CPM, 123Greetings - IN Do Not Pay_NonIndia,
    AUG12_Zynga.com_RubyBlast_0.10$_CPM, 12_Affinity_Education_CPC_2.8_INR_1st, 728x90_Original, 300x250_TagModified,
    Dec11_ WhyteFort_CPL_INR 45, AUG12_Zynga.com_PetsVille_0.10$_CPM, 123Greetings - IN Do Not Pay_First,
    AUG12_Zynga.com_FishVille_0.10$_CPM, 3PAS-Pub-IO-adfac.net-LI,
    3PAS-Pub-IO-bs.serving-sys.com-LI1, 3PAS-test-pub-IO-li, 160x600_Noscr...
</div>

Tried with jquery substring concept, but no luck,

I tried like

1. find div height

2. find line height

3. div height / line height = no of lines

This is the code:

var divheight = $("#startegy-sections-targeting-exclude").height();
var lineheight = $("#startegy-sections-targeting-exclude").css('line-height');
console.log(Math.round(divheight/parseInt(lineheight))); 

But have no success, Can you guys, help me out

Answer 1

The problem with your code is that if you don't specify a line-height, the line-height default value is normal.

$(function() {
  var divheight = $("#startegy-sections-targeting-exclude").height();
  var lineheight = parseInt($("#startegy-sections-targeting-exclude").css('line-height'), 10);
  console.log("Number of lines:", Math.round(divheight / lineheight));
});

#startegy-sections-targeting-exclude {
  line-height: 20px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="startegy-sections-targeting-exclude">
  3PAS-Pub-IO-doubleclick.net-LI, ATOM_DFP_Pub_LI, AUG12_Zynga.com_MafiaWars2_0.10$_CPM, ATOM_Macro_Jivox Testing, Sep 11 Head and Shoulder Innovation - Do Not Bill, 123Greetings - IN Do Not Pay_Second, July 11_Affinity.com_Fiat Linea_CPL 55, 3PAS-Pub-IO-atdmt.com-LI,
  2_Affinity_RealEstate_CPC_2.8_INR_2nd, AUG12_Zynga.com_treasureIsle_0.10$_CPM, AUG12_Zynga.com_theville_0.10$_CPM, 123Greetings - IN Do Not Pay_NonIndia, AUG12_Zynga.com_RubyBlast_0.10$_CPM, 12_Affinity_Education_CPC_2.8_INR_1st, 728x90_Original, 300x250_TagModified,
  Dec11_ WhyteFort_CPL_INR 45, AUG12_Zynga.com_PetsVille_0.10$_CPM, 123Greetings - IN Do Not Pay_First, AUG12_Zynga.com_FishVille_0.10$_CPM, 3PAS-Pub-IO-adfac.net-LI, 3PAS-Pub-IO-bs.serving-sys.com-LI1, 3PAS-test-pub-IO-li, 160x600_Noscr...
</div>