js首字母大写

--单个单词

处理方式一

function ReplaceFirstUper(str)
{  
      str = str.toLowerCase();   
      return str.replace(/\b(\w)|\s(\w)/g, function(m){
             return m.toUpperCase();
      }); 
}

处理方式二
var operate2='OR';
for (var j = 0, len = operate1.length; j< len; j++) {
       //获得unicode码
       var ch2 = operate1.charAt(j);
       if (j == 0) {
             operate2 = ch2.toUpperCase();
       }else {
             operate2+= ch2.toLowerCase();
       }
}

 

多个单词

<SCRIPT LANGUAGE="JavaScript">
 function changeCase(frmObj) {
      var index;
      var tmpStr;
      var tmpChar;
      var preString;
      var postString;
      var strlen;
      tmpStr = frmObj.value.toLowerCase();
      strLen = tmpStr.length;
      if (strLen > 0) {
             for (index = 0; index < strLen; index++) {
                   if (index == 0) {
                          tmpChar = tmpStr.substring(0, 1).toUpperCase();
                          postString = tmpStr.substring(1, strLen);
                          tmpStr = tmpChar + postString;
                  } else {
                          tmpChar = tmpStr.substring(index, index + 1);
                          if (tmpChar == " " && index < (strLen - 1)) {
                                tmpChar = tmpStr.substring(index + 1, index + 2).toUpperCase();
                                preString = tmpStr.substring(0, index + 1);
                                postString = tmpStr.substring(index + 2, strLen);
                                tmpStr = preString + tmpChar + postString;
                          }
                  }
            }
      }
      frmObj.value = tmpStr;
 }
</script>
<form name=form>
      <input type=text name=box value="type in here!">
      <input type=button value="Convert" onClick="javascript: changeCase(this.form.box);">
</form>