CODEWITHSUNDEEP
javascriptjqueryhtmlcss
Dinesh Kanivu
Dinesh Kanivu

Reputation: 2587

Add Content Using Jquery

My demo in JS Fiddle https://jsfiddle.net/dineshkanivu/5fp2sjgb/2/

I want to add content Dynamically to the id="myNote" in its 4th line. click the button lines , you can see total number of lines. i want to add some html content after 4th line. How can i do this using jQuery

Snippet : 

$(function() {
  $("#getLines").click(function() {

    var myheight = $("#myNote").height();
    parseFloat($("#myNote").css("line-height"));
    //$('#myNote').after('<button>button</button>');
    alert(myheight);

  });
});
#myNote {
  width: 300px;
  line-height: 1;
  height: auto;
  text-align: justify;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="myNote">
  Finally, designing the last sentence in this way has the added benefit of seamlessly moving the reader to the first paragraph of the body of the paper. In this way we can see that the basic introduction does not need to be much more than three or four
  sentences in length. If yours is much longer you might want to consider editing it down a bit! Here, by way of example, is an introductory paragraph to an essay in response to the following question:
</div>

<button id="getLines">lines</button>

Upvotes: 1

Views: 81

Answers (1)

Andre Lehnert
Andre Lehnert

Reputation: 531

According to this post I wrote a little function to do this. Surely there a more efficent way. But it works fine.

I wrap every word in an own span. After that I check the positions of all spans, get the line number and add a class with this line number to the span.

function insertTextAtLine(target,lineNumber,textInsert){ 

var words = target.text().split(' '); 
var text = ''; 
$.each(words, function(i, w){
               if($.trim(w)) text = text + '<span>' + w + '</span> '; 
});  

target.html(text); 
var line = 0; 
var prevTop = - parseFloat($("#myNote").css("line-height")); 
$('span', target).each(function(){ 
  var word = $(this); 
  var top = word.offset().top; 
  if(top != prevTop){ 
    prevTop = top; 
    line++; 
  } 
  word.attr('class', 'line' + line); 

}); 
var insert=$('<span />').text(textInsert);
target.find('.line'+lineNumber).first().prepend(insert);
};

Fiddle:https://jsfiddle.net/tye3czva/4/

Upvotes: 3

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