js 页面实时字符统计

<TEXTAREA ID="iInput" ROWS="10" COLS="50" onkeyup="statistic()" onchange="statistic()">
</TEXTAREA>

<br>
Statistic:
<INPUT ID="out" TYPE="text" size="50">

<SCRIPT>
function statistic(){
 var words = iInput.value;
 var r ;
 r = charStatistic(words);
 out.value="Chinese:"+r["chinese"]+'  _  Words:'+r["word"]+'  _  NUMs:'+r["charNum"];
}
function charStatistic(words) {
var chinese = 0;
var total = 0;
var word = 0;
var st = false;
for (i=0; i<words.length; i++) {
 var c = words.charAt(i);
 if(st==false) {
  if(isChinese(c)) {chinese++;}
  if(isChar(c)) st=true;
 }else {
  
  if(isChinese(c)) {chinese++; word++; st=false;}
  else if(!isChar(c)&&c!='-') {word++; st=false;}
 } 
 total++;
}
if(st==true) word++;

var Result = new Array();
Result["chinese"] = chinese;
Result["word"] = word;
Result["charNum"] = total;
return Result;
}

function isChinese(c){
 return c.match(/[/u4e00-/u9fa5]/);
}
function isChar(c){
 return c.match(//w/);
}
</SCRIPT>

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