Similar to iPhone slide to unlock. Using pure javascript to drag an object for devices with and without touch support
A Pen by JunesiPhone on CodePen.
Created
June 17, 2017 09:03
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Pure javascript draggable div (Touch and Mouse supported)
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| <!--http://JunesiPhone.com--> | |
| <html> | |
| <head> | |
| <title></title> | |
| </head> | |
| <body> | |
| <div id="container"> | |
| <div id="slider" ><div id="inner">➟</div></div> | |
| </div> | |
| </body> | |
| </html> |
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| var getEL = function(el) { | |
| return document.getElementById(el); | |
| }; | |
| var acceptsTouch = function() { | |
| return 'ontouchstart' in document.documentElement; | |
| }; | |
| function getStyle(oElm, strCssRule){ | |
| var strValue = ""; | |
| if(document.defaultView && document.defaultView.getComputedStyle){ | |
| strValue = document.defaultView.getComputedStyle(oElm, "").getPropertyValue(strCssRule); | |
| } | |
| else if(oElm.currentStyle){ | |
| strCssRule = strCssRule.replace(/\-(\w)/g, function (strMatch, p1){ | |
| return p1.toUpperCase(); | |
| }); | |
| strValue = oElm.currentStyle[strCssRule]; | |
| } | |
| return strValue; | |
| } | |
| var drag = function() { | |
| return { | |
| move: function(div, xpos, ypos) { | |
| div.style.left = xpos + "px"; | |
| //div.style.top = ypos + "px"; //not moving y axis in this case | |
| }, | |
| startMoving: function(div, container, evt) { | |
| evt = evt || window.event; | |
| var posX = ((acceptsTouch()) ? evt.touches[0].clientX : evt.clientX), | |
| posY = ((acceptsTouch()) ? evt.touches[0].clientY : evt.clientY), | |
| divTop = div.style.top.replace('px', ''), | |
| divLeft = div.style.left.replace('px', ''), | |
| offsetX = posX - divLeft, | |
| offsetY = posY - divTop; | |
| if (acceptsTouch()) { | |
| document.ontouchmove = function(evt) { | |
| evt.preventDefault(); | |
| evt = evt || window.event; | |
| var posX = evt.touches[0].clientX, | |
| posY = evt.touches[0].clientY, | |
| cWidth = getStyle(getEL('container'),'width').replace('px',''), | |
| dWidth = getStyle(getEL('slider'),'width').replace('px',''), | |
| finalX = posX - offsetX, | |
| finalY = posY - offsetY; | |
| if (finalX < 0) {finalX = 0;} | |
| if (finalY < 0) {finalY = 0;} | |
| if(finalX <= cWidth - dWidth - 8){ | |
| drag.move(div, finalX, finalY); | |
| } | |
| }; | |
| } else { | |
| document.onmousemove = function(evt) { | |
| evt.preventDefault(); | |
| evt = evt || window.event; | |
| var posX = evt.clientX, | |
| posY = evt.clientY, | |
| cWidth = getStyle(getEL('container'),'width').replace('px',''), //container width | |
| dWidth = getStyle(getEL('slider'),'width').replace('px',''), //slider width | |
| finalX = posX - offsetX, | |
| finalY = posY - offsetY; | |
| if (finalX < 0) {finalX = 0;} | |
| if (finalY < 0) {finalY = 0;} | |
| if(finalX <= cWidth - dWidth - 8){ | |
| drag.move(div, finalX, finalY); | |
| } | |
| }; | |
| } | |
| }, | |
| stopMoving: function(div, container, evt) { | |
| if (acceptsTouch()) { | |
| //evt.changedTouches[0].clientX | |
| div.style.left = "3px"; | |
| } else { | |
| document.getElementById(container).style.cursor = 'default'; | |
| document.onmousemove = function() {}; | |
| //evt.clientX | |
| div.style.left="3px"; | |
| } | |
| }, | |
| }; | |
| }(); | |
| (function(){ | |
| var el = getEL("slider"); | |
| if (acceptsTouch()) { | |
| el.addEventListener('touchstart', function(e) { | |
| drag.startMoving(this, 'container', event); | |
| }, false); | |
| el.addEventListener('touchend', function(e) { | |
| drag.stopMoving(this, 'container', event); | |
| }, false); | |
| } else { | |
| el.addEventListener('mousedown', function(e) { | |
| drag.startMoving(this, 'container', event); | |
| }, false); | |
| el.addEventListener('mouseup', function(e) { | |
| drag.stopMoving(this, 'container', event); | |
| }, false); | |
| } | |
| })(); |
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| #container{ | |
| position: absolute; | |
| top:140px; | |
| left:5px; | |
| width: 500px; | |
| height: 100px; | |
| background-color:rgba(0,0,0,0.5); | |
| border: 1px solid rgba(0,0,0,1); | |
| border-radius: 10px; | |
| } | |
| #slider{ | |
| border: 1px solid rgba(255,255,255,0.2); | |
| position: absolute; | |
| background-color: green; | |
| width:140px;height:90px;top:3px;left:3px;border-radius:10px; | |
| } | |
| #inner{ | |
| margin-left:55px; | |
| line-height:100px; | |
| font-size: 90px; | |
| color:rgba(0,0,0,0.5); | |
| text-shadow: 1px 1px rgba(255,255,255,0.2); | |
| } | |
| html{background:gray;} |
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