<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-874" />
<title>Untitled Document</title>
<script type="text/javascript" >
var fieldlimiter={
defaultoutput: "<b>[int]</b> ตัวอักขร.", //default message that gets output to statusid element
uncheckedkeycodes: /(8)|(13)|(16)|(17)|(18)/, //keycodes that are not checked, even when limit has been reached. See http://www.javascriptkit.com/jsref/eventkeyboardmouse.shtml for avail keycodes
limitinput:function(e, config){
var e=window.event || e
var thefield=config.thefield
var keyunicode=e.charCode || e.keyCode
if (!this.uncheckedkeycodes.test(keyunicode)){
if (thefield.value.length>=config.maxlength){
if (e.preventDefault)
e.preventDefault()
return false
}
}
},
showlimit:function(config){
var thefield=config.thefield
var statusids=config.statusids
var charsleft=config.maxlength-thefield.value.length
if (charsleft<0) //if user has exceeded input limit (possible if cut and paste text into field)
thefield.value=thefield.value.substring(0, config.maxlength) //trim input
for (var i=0; i<statusids.length; i++){
var statusdiv=document.getElementById(statusids[i])
if (statusdiv) //if status DIV defined
statusdiv.innerHTML=this.defaultoutput.replace("[int]", Math.max(0, charsleft))
}
config.onkeypress.call(thefield, config.maxlength, thefield.value.length)
},
cleanup:function(config){
for (var prop in config){
config[prop]=null
}
},
addEvent:function(targetarr, functionref, tasktype){
if (targetarr.length>0){
var target=targetarr.shift()
if (target.addEventListener)
target.addEventListener(tasktype, functionref, false)
else if (target.attachEvent)
target.attachEvent('on'+tasktype, function(){return functionref.call(target, window.event)})
this.addEvent(targetarr, functionref, tasktype)
}
},
setup:function(config){
if (config.thefield){ //if form field exists
config.onkeypress=config.onkeypress || function(){}
config.thefield.value=config.thefield.value
this.showlimit(config)
this.addEvent([window], function(e){fieldlimiter.showlimit(config)}, "load")
this.addEvent([window], function(e){fieldlimiter.cleanup(config)}, "unload")
this.addEvent([config.thefield], function(e){return fieldlimiter.limitinput(e, config)}, "keypress")
this.addEvent([config.thefield], function(){fieldlimiter.showlimit(config)}, "keyup")
}
}
}
</script>
</head>
<body>
<form name="sampleform">
<input type="text" name="george" style="width:250px" />
<div id="george-status"></div>
</form>
<script type="text/javascript">
fieldlimiter.setup({
thefield: document.sampleform.george,
maxlength: 5,
statusids: ["george-status"],
onkeypress:function(maxlength, curlength){
if (curlength<maxlength)
{
this.style.border="2px solid gray";
}else{
this.style.border="2px solid red";
alert("ไปหน้า thaicreate.com ");
window.parent.location='https://www.thaicreate.com'
}
}
})
</script>
</body>
</html>
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