kipill kipill - 6 months ago 16
Javascript Question

How can I make a movable <hr>?

I have a question. How can I create a movable

<hr>
and move it over image?
I thought about changing the parameter "margin", but I don't know how put the
<hr>
over the image.

Please help me if you can.

Answer

Answer based on: https://jsfiddle.net/tovic/Xcb8d/

CSS

#draggable-hr {
    cursor:move;
    position: absolute;
    width: 100%;
}

HTML

<hr id="draggable-hr">

JavaScript

var selected = null, // Object of the element to be moved
x_pos = 0, y_pos = 0, // Stores x & y coordinates of the mouse pointer
x_elem = 0, y_elem = 0; // Stores top, left values (edge) of the element

    // Will be called when user starts dragging an element
    function _drag_init(elem) {
        // Store the object of the element which needs to be moved
        selected = elem;
        x_elem = x_pos - selected.offsetLeft;
        y_elem = y_pos - selected.offsetTop;
    }

    // Will be called when user dragging an element
    function _move_elem(e) {
        x_pos = document.all ? window.event.clientX : e.pageX;
        y_pos = document.all ? window.event.clientY : e.pageY;
        if (selected !== null) {
            selected.style.left = (x_pos - x_elem) + 'px';
            selected.style.top = (y_pos - y_elem) + 'px';
        }
    }

    // Destroy the object when we are done
    function _destroy() {
        selected = null;
    }

    // Bind the functions...
    document.getElementById('draggable-hr').onmousedown = function () {
        _drag_init(this);
        return false;
    };

    document.onmousemove = _move_elem;
    document.onmouseup = _destroy;
Comments