Created
August 1, 2011 19:45
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A very simple basic 'slider' bar in JavaScript and CSS
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <style type="text/css"> | |
| #bar{ | |
| width:200px; | |
| height:25px; | |
| border:1px solid black; | |
| position:relative; | |
| } | |
| #slider{ | |
| width:0%; | |
| height:100%; | |
| background-color:red; | |
| top:0px; | |
| left:0px; | |
| position:absolute; | |
| cursor:pointer; | |
| } | |
| #info{ | |
| width:200px; | |
| height:25px; | |
| border:1px solid black; | |
| } | |
| </style> | |
| <script type="text/javascript"> | |
| var bar, slider; | |
| function init(){ | |
| bar = document.getElementById('bar'); | |
| slider = document.getElementById('slider'); | |
| info = document.getElementById('info'); | |
| bar.addEventListener('mousedown', startSlide, false); | |
| bar.addEventListener('mouseup', stopSlide, false); | |
| } | |
| function startSlide(event){ | |
| var set_perc = ((((event.clientX - bar.offsetLeft) / bar.offsetWidth)).toFixed(2)); | |
| info.innerHTML = 'start' + set_perc + '%'; | |
| bar.addEventListener('mousemove', moveSlide, false); | |
| slider.style.width = (set_perc * 100) + '%'; | |
| } | |
| function moveSlide(event){ | |
| var set_perc = ((((event.clientX - bar.offsetLeft) / bar.offsetWidth)).toFixed(2)); | |
| info.innerHTML = 'moving : ' + set_perc + '%'; | |
| slider.style.width = (set_perc * 100) + '%'; | |
| } | |
| function stopSlide(event){ | |
| var set_perc = ((((event.clientX - bar.offsetLeft) / bar.offsetWidth)).toFixed(2)); | |
| info.innerHTML = 'done : ' + set_perc + '%'; | |
| bar.removeEventListener('mousemove', moveSlide, false); | |
| slider.style.width = (set_perc * 100) + '%'; | |
| } | |
| </script> | |
| </head> | |
| <body onload='init()'> | |
| <div id='bar'> | |
| <div id='slider'> | |
| </div> | |
| </div> | |
| <br /> | |
| <div id='info'>info</div> | |
| </body> | |
| </html> |
Please take a look at my upgraded version of your code! :) https://gist.github.com/dzenkovich/5813630
Hi there, Thanks for posting this, but I cannot get the code to work on jsFiddle.
I am totally new to JScript and am just trying to start from a working example. Can you please take a look at http://jsfiddle.net/6PdVV/ and tell me what I'm doing wrong?
Thanks.
@DRudel: A little late but just incase anybody else finds this. http://jsfiddle.net/6PdVV/39/
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nice and simple.
i used bar.getBoundingRect() to allow it to work in a relatively positioned div.
<title>Slider</title> <style type="text/css"> #wrapper { width:500px; position:absolute; margin:auto; height:500px; background:#666; top:100px; left:200px; } #bar { width:200px; height:25px; border:1px solid black; position:relative; top:10px; left:10px; } #slider { width:0%; height:100%; background-color:red; top:0px; left:0px; position:absolute; cursor:pointer; } #info { width:200px; height:25px; border:1px solid black; } </style> <script type="text/javascript"> var bar, slider; function init() { bar = document.getElementById('bar'); barW = parseInt(bar.style.width = '200px', 10); slider = document.getElementById('slider'); info = document.getElementById('info'); bar.addEventListener('mousedown', startSlide, false); bar.addEventListener('mouseup', stopSlide, false); } function startSlide(event) { var pct = parseInt((((event.clientX - bar.getBoundingClientRect().left)/barW)*100), 10).toFixed(2); console.log(pct); info.innerHTML = 'start' + pct + '%'; bar.addEventListener('mousemove', moveSlide, false); slider.style.width = parseInt(event.clientX - bar.getBoundingClientRect().left, 10) +'px'; } function moveSlide(event) {//console.log('move: '); console.log(event); var pct = parseInt((((event.clientX - bar.getBoundingClientRect().left)/barW)*100), 10).toFixed(2); info.innerHTML = 'moving : ' + pct + '%'; slider.style.width = parseInt(event.clientX - bar.getBoundingClientRect().left, 10) +'px'; } function stopSlide(event) { var pct = parseInt((((event.clientX - bar.getBoundingClientRect().left)/barW)*100), 10).toFixed(2); info.innerHTML = 'done : ' + pct + '%'; bar.removeEventListener('mousemove', moveSlide, false); slider.style.width = parseInt(event.clientX - bar.getBoundingClientRect().left, 10) +'px'; } window.onload = function(){ init(); } </script>