I have this task, create draggable line like this img I want when I press plus button value increment and etc.
please tell me how to create this script very easy if you know any plug in like this please give me links
thank for help :)

I have this task, create draggable line like this img I want when I press plus button value increment and etc.
please tell me how to create this script very easy if you know any plug in like this please give me links
thank for help :)

 
    
    Here's a simple solution to the problem using jQuery UI (fiddle: http://jsfiddle.net/rz12wbcL/)
$(function() {
    var btnDec = $('.dec');
    var btnInc = $('.inc');
      
    var slider = $( "#slider" ).slider({
        min: 0,
        max: 30,
        step: 5,
        range: "min",
        value: 0,
        slide: function( event, ui ) {
            console.log(ui.value);
            $('#slider_value').val(ui.value);
        }
    });
    btnInc.click(function () { slider.slider('value', slider.slider('value') + 5 ); $('#slider_value').val(slider.slider('value')); });
    btnDec.click(function () { slider.slider('value', slider.slider('value') - 5 ); $('#slider_value').val(slider.slider('value')); });
});#slider_container * {
    float: left;
}
#slider {
    margin-left: 20px;
    margin-right: 20px;
}
input {
    width: 20px;
}<link rel="stylesheet" href="//code.jquery.com/ui/1.11.2/themes/smoothness/jquery-ui.css">
<script src="//code.jquery.com/jquery-1.10.2.js"></script>
  <script src="//code.jquery.com/ui/1.11.2/jquery-ui.js"></script>
<div id="slider_container">
    <button class="dec">-</button>
    <div id='slider' style='width: 100px;'></div>
    <input type="text" id="slider_value" value="0" />
    <button class="inc">+</button>
</div>