不好意思,type='hidden'不行
把代码改成这样就可以了!
<form name="add_column">
<select name="generation" onpropertychange="show_father();">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select><input type="text" name="father" style="display:none" /><script>
function show_father()
{
if(document.add_column.generation.value == "1")
document.add_column.father.style.display = "none";
else
document.add_column.father.style.display = "";
}
</script>
把代码改成这样就可以了!
<form name="add_column">
<select name="generation" onpropertychange="show_father();">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select><input type="text" name="father" style="display:none" /><script>
function show_father()
{
if(document.add_column.generation.value == "1")
document.add_column.father.style.display = "none";
else
document.add_column.father.style.display = "";
}
</script>
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