JSFiddle - React, Tailwind, and code Playground

by web tiki

HTML

<div id="container">
    <h1 class="stretch">Sample</h1>
    <p class="stretch">Another even longer sample text</p>
</div>

CSS

body {
    padding: 130px;
}

#container {
    width: 100%;
    background: yellow;
}

.stretch_it{
    white-space: nowrap;
}
.justify{
    text-align:justify;
}

JavaScript

$.fn.strech_text = function(){
    var elmt          = $(this),
        cont_width    = elmt.width(),
        txt           = elmt.text(),
        one_line      = $('<span class="stretch_it">' + txt + '</span>'),
        nb_char       = elmt.text().length,
        spacing       = cont_width/nb_char,
        txt_width;
    
    elmt.html(one_line);
    txt_width = one_line.width();
    
    if (txt_width < cont_width){
        var  char_width     = txt_width/nb_char,
             ltr_spacing    = spacing - char_width + (spacing - char_width)/nb_char ; 
  
        one_line.css({'letter-spacing': ltr_spacing});
    } else {
        one_line.contents().unwrap();
        elmt.addClass('justify');
    }
};

$(document).ready(function () {
    $('.stretch').each(function(){
        $(this).strech_text();
    });
    $(window).resize(function () { 
        $('.stretch').each(function(){
            $(this).strech_text();
        });
    });
});