//***JavaScript 表单域读写函数集*******//
function outcheck(check_value){
if(check_value != ""){
alert(check_value)
return false;
}
return true;
}
function checkvalue(obj, low, up, mode, lable){
/*
Mode = 1 检测是否为空 2是否是数字 4是否整数
8是否是为数字、字母和_.-
16 自定义字符检测
32 长度检测
64 数字大小检测
*/
var temp,type;
var length, i, base, str;
str=getformvalue(obj);
if(str==null){
lenght=0;
str="";
}
else{
length = str.length
}
temp=""
if( mode % 2 >= 1 ){
if( str == "" ){
temp = temp + "“" + lable + "”" + "不能为空！" + "\n";
}
}
if( mode % 4 >= 2 ){
base = "0123456789."
for(i = 0;i<=length-1;i++)
if( base.indexOf(str.substring(i, i+1)) == -1 ){
temp = temp + "“" + lable + "”" + "必需是数字！" + "\n";
break;
}
}
if( mode % 8 >= 4 ){
base = "0123456789"
for(i = 0;i<=length-1;i++)
if( base.indexOf(str.substring(i, i+1)) == -1 ){
temp = temp + "“" + lable + "”" + "必需是整数！" + "\n";
break;
}
}
if( mode % 16 >= 8 ){
base = "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz0123456789_-."
for(i = 0;i<=length-1;i++)
if( base.indexOf(str.substring(i, i+1)) == -1 ){
temp = temp + "“" + lable + "”" + "包含非法字符！它只能是字母、数字和“- _ .”。" + "\n";
break;
}
}
if( mode % 32 >= 16 ){
base = low.replace("[a-z]", "abcdefghijklmnopqrstuvwxyz")
base = base.replace("[a-z]", "abcdefghijklmnopqrstuvwxyz")
base = base.replace( "[0-9]", "0123456789")
for(i = 0;i<=length-1;i++)
if( base.indexOf(str.substring(i, i+1)) == -1 ){
temp = temp + "“" + lable + "”" + "包含非法字符！它只能是" + up + "。" + "\n";
break;
}
}
if( mode % 64 >= 32 ){
if( ! (length >= low && length <= up) ){
temp = temp + "“" + lable + "”" + "的长度必需在" + low + "到" + up + "之间！" + "\n";
}
}
if( mode % 128 >= 64 ){
if( ! (parseInt(str) >= parseInt(low) && parseInt(str) <= parseInt(up)) ){
temp = temp + "“" + lable + "”" + "必需在" + low + "到" + up + "之间！" + "\n";
}
}
if(temp!=""){
alert(temp);
type=(getformtype(obj));
if(type!="radio" && type!="checkbox"){
obj.focus();
}
return false;
}
return true;
}
function getformtype(obj){
var type;
type=obj.type;
if(typeof(type)=="undefined"){
type=obj[0].type;
}
return type;
}
function getformvalue(input){
//取表单域的值
var type,temp;
temp="";
type=getformtype(input);
switch(type){
case "radio": //单选框
n=input.length-1;
if(isNaN(n)==true){
if(input.checked == true){
temp = input.value;
}else{
temp = "";
}
}else{
for(i=0;i<=n;i++){
if(input[i].checked == true){
return(input[i].value);
}
}
break;
}
case "checkbox": //复选框
n=input.length-1;
if(isNaN(n)==true){
if(input.checked == true){
temp = input.value;
}else{
temp = "";
}
}else{
for(i=0;i<=n;i++){
if(input[i].checked == true){
if(temp!=""){
temp += ",";
}
temp += input[i].value;
}
}
}
return(temp);
break;
case "select-one" : //单选列表框
n=input.length-1;
for(i=0;i<=n;i++){
if(input.options[i].selected == true){
temp = input.options[i].value;
break;
}
}
return(temp);
break;
case "select-multiple": //多选列表框
n=input.length-1;
for(i=0;i<=n;i++){
if(input.options[i].selected == true){
if(temp!=""){
temp+=",";
}
temp+=input.options[i].value;
}
}
return(temp);
break;
default: //其它
return(input.value);
break;
}
return(input.value);
}
function ischecked(group,value){
var i,n;
n=group.length-1;
for(i=0;i<=n;i++){
if(value==group[i]){
return true;
}
}
return false;
}
function SetSelectedAndChecked(input,value){
//设置表单域的选择
var type,temp,i,n;
var split_value = new Array();
temp="";
type=input.type;
if(typeof(type)=="undefined"){
type=input[0].type;
}
switch(type){
case "radio": //单选框
n=input.length-1;
if(isNaN(n)==true){
if(input.value = value){
input.checked = true;
}else{
input.checked = false;
}
}else{
for(i=0;i<=n;i++){
if(input[i].value == value){
input[i].checked = true;
}else{
input[i].checked = false;
}
}
}
break;
case "checkbox": //复选框
n=input.length-1;
split_value=value.split(",");
if(isNaN(n)==true){
if(ischecked(split_value,input.value)){
input.checked = true;
}else{
input.checked = false;
}
}else{
for(i=0;i<=n;i++){
if(ischecked(split_value,input[i].value)){
input[i].checked = true;
}else{
input[i].checked = false;
}
}
}
break;
case "select-one" : //单选列表框
n=input.options.length-1;
for(i=0;i<=n;i++){
if(input.options[i].value == value){
input.options[i].selected = true;
}else{
input.options[i].selected = false;
}
}
break;
case "select-multiple": //多选列表框
n=input.options.length-1;
split_value=value.split(",");
for(i=0;i<=n;i++){
if(ischecked(split_value,input.options[i].value)){
input.options[i].selected = true;
}else{
input.options[i].selected = false;
}
}
break;
default: //其它
return false;
break;
}
return true;
}
