<script type="text/javascript">
function go()
{
var kw = document.getElementById('kw').value;
var kw=document.free.edit.value;
if (kw.length==0) {
//alert("输入框不能为空!");
document.free.edit.focus();
return false;
}
else
{
location.href = 'allnews.php?edit=' + encodeURI(kw);
return true;
}
}
</script> <DIV id=fm>
<form name="free" method="GET" action='' onSubmit="if(go()) return false;" >
<input type="text" name=edit class="STYLE2" id=kw maxlength=150>
<SPAN class=btn_wr>
<INPUT type="submit" class=btn id=su value="检 索" >
</SPAN>
</FORM></DIV>
为什么onSubmit事件只有这样写,才能成功实现跳转?return go()就不行呢?
function go()
{
var kw = document.getElementById('kw').value;
var kw=document.free.edit.value;
if (kw.length==0) {
//alert("输入框不能为空!");
document.free.edit.focus();
return false;
}
else
{
location.href = 'allnews.php?edit=' + encodeURI(kw);
return true;
}
}
</script> <DIV id=fm>
<form name="free" method="GET" action='' onSubmit="if(go()) return false;" >
<input type="text" name=edit class="STYLE2" id=kw maxlength=150>
<SPAN class=btn_wr>
<INPUT type="submit" class=btn id=su value="检 索" >
</SPAN>
</FORM></DIV>
为什么onSubmit事件只有这样写,才能成功实现跳转?return go()就不行呢?
return go()——你这里的括号是全角的啊
onsubmit="return false"//不提交onsubmit="return fun()"//用函数fun()返回值来控制是否提交,如果fun()无返回值默认为true
楼主你的if(go())return false;意思就是if函数go()返回true那么就不提交
<script type="text/javascript">
function go()
{
var kw = document.getElementById('kw').value;
var kw=document.free.edit.value;
if (kw.length==0) {
//alert("输入框不能为空!");
document.free.edit.focus();
return false;
}
else
{
alert(1);
}
}
</script> <DIV id=fm>
<form name="free" method="GET" action='' onSubmit="return go();" >
<input type="text" name=edit class="STYLE2" id=kw maxlength=150>
<SPAN class=btn_wr>
<INPUT type="submit" class=btn id=su value="检 索" >
</SPAN>
</FORM></DIV>
经测试,一切正常。
那么就没有必要有这句
location.href = 'allnews.php?edit=' + encodeURI(kw);
只需
<form name="free" method="GET" action='allnews.php' onSubmit="return go()" >
就可以了如果你只是想在跳转前做个检查,以确保参数存在。就
location.href = 'allnews.php?edit=' + encodeURI(kw);
return false;<form name="free" method="GET" action='' onSubmit="return go()" >