<!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=utf-8" />
<title>用JS添加文本框案例代码</title>
</head>
<body>
<form id="t">
<table id="table">
<tr></td><input type="text" value="1" /></td></tr>
<table>
<input type="button" id="btn" value="提交" />
<input type="button" id="new" value="新增" />
</form>
<script>
document.getElementById('new').onclick = function(){
var input = document.createElement('input');
var tr = document.createElement('tr');
var td = document.createElement('td');
td.appendChild(input);
tr.appendChild(td);
document.getElementById('table').appendChild(tr);
};
document.getElementById('btn').onclick = function(){
var inps = document.getElementsByTagName('input'),
len = inps.length,count = 0,arr = [];
for(var i = 0; i < len; i++){
if(inps[i].type == 'text'){
arr.push(inps[i]);
}
}
for(var i = 0; i < arr.length; i++){
if(inps[i].value != ''){
count++;
}else{
count--;
}
}
if(count == arr.length){
alert('提交')
document.getElementById('t').submit();
}else{
alert('有空值')
}
};
</script>
</body>
</html>
