<style type="text/css">
.progress{
width: 1px;
height: 14px;
color: white;
font-size: 12px;
overflow: hidden;
background-color: navy;
padding-left: 5px;
}
</style>
<script type="text/JavaScript">
function textCounter(field,counter,maxlimit,linecounter) {
// text width//
var fieldWidth = parseInt(field.offsetWidth);//The parseInt method returns the integer converted from the string. Convert string to integer.
//obj.offsetWidth refers to the absolute width of the obj control itself, excluding the part not displayed due to overflow, that is, the width it actually occupies, integer, unit pixel
var charcnt = field.value.length;
// trim the extra text
if (charcnt > maxlimit) {
field.value = field.value.substring(0, maxlimit);
}
else {
// progress bar percentage
var percentage = parseInt(100 - (( maxlimit - charcnt) * 100)/maxlimit) ;
document.getElementById(counter).style.width = parseInt((fieldWidth*percentage)/100)+"px";
document.getElementById(counter).innerHTML="Lost: "+percentage+"%"
// color correction on style from CCFFF -> CC0000
setcolor(document.getElementById(counter),percentage,"background-color");
}
}
function setcolor(obj,percentage,prop){
obj.style[prop] = "rgb(80%,"+(100-percentage)+"%,"+(100-percentage)+"%)";
}
</script>
<p>Limit: 120 bytes</P>
<form>
<textarea rows="5" cols="40" name="maxcharfield" id="maxcharfield"
onKeyDown="textCounter(this,'progressbar1',120)"
onKeyUp="textCounter(this,'progressbar1',120)"
onFocus="textCounter(this,'progressbar1',120)" ></textarea><br />
<div id="progressbar1" class="progress"></div>
<script>textCounter(document.getElementById(" maxcharfield"),"progressbar1",120)</script>
</form>