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var box;
var boxX = 0, boxY = 0;
document.addEventListener( 'DOMContentLoaded', init, false );
function init() {
box = document.querySelector('#box');
box.addEventListener( 'mousedown', onMousedown, false );
box.addEventListener( 'click', onClick, false );
}
// ----- mouse ----- //
var dragStartX, dragStartY;
var dragStartBoxX, dragStartBoxY;
var mouseDownEvent;
function onMousedown( event ) {
// event.preventDefault();
dragStartX = event.pageX;
dragStartY = event.pageY;
// position of box when drag started
dragStartBoxX = boxX;
dragStartBoxY = boxY;
window.addEventListener( 'mousemove', onMousemove, false );
window.addEventListener( 'mouseup', onMouseup, false );
}
function onMousemove( event ) {
boxX = dragStartBoxX + ( event.pageX - dragStartX );
boxY = dragStartBoxY + ( event.pageY - dragStartY );
box.style.left = boxX + 'px';
box.style.top = boxY + 'px';
}
function onMouseup() {
window.removeEventListener( 'mousemove', onMousemove, false );
window.removeEventListener( 'mouseup', onMouseup, false );
}
// ----- click ----- //
function onClick() {
console.log('click');
}
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