Question

js判断循环多个表单问题

一下三个表单是循环出来的，我想用js判断点击各自的提交按钮，不如我点击按钮一的时候判断表单一不能为空，如果不为空那么获取一的焦点，点击提交二的时候判断二表单不能为空，获取二的焦点......, 各管各的怎么判断？
往高手指点？
<form name="form" action='form.php' method="post" onsubmit="return show()">
<input type="text" name="name" id="name1" />
<input type="submit" name="submit" value="提交">
</form>
<form name="form" action='form.php' method="post" onsubmit="return show()">
<input type="text" name="name" id="name2" />
<input type="submit" name="submit" value="提交">
</form>
<form name="form" action='form.php' method="post" onsubmit="return show()">
<input type="text" name="name" id="name3" />
<input type="submit" name="submit" value="提交">
</form>
................
..................

Answer 1

<form name="form" action='form.php' method="post" onsubmit="return show()">改成
<form name="form1" action='form.php' method="post" onsubmit="return show(form1)">
<form name="form2" action='form.php' method="post" onsubmit="return show(form2)">
<form name="form3" action='form.php' method="post" onsubmit="return show(form3)">

js 函数里
function show(obj){
var f=document.obj;
if(obj=='form1'){}
if(obj=='form2'){}
if(obj=='form3'){}
}

Answer 2

把onsubmit="return show()" 改为onsubmit="return show(this.firstChild.value)"
然后在show函数里判断传入变量的值是否为空