为什么回车键无效了?

在文本框输入要搜索的文字,然后按回车却无效,但鼠标按下就可以.到底怎么回事啊?
<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
*{margin:0;padding:0;}
ul{list-style:none}
body{}
a{text-decoration:none;color:#333;}
#search{font-size:12px;border:1px solid orange;width:600px;margin:50px auto;overflow:hidden}
#nav {height:20px}
#nav li{float:left;padding:0 10px}
#logo{float:left;width:64px;height:64px;overflow:hidden}
.search_c{width:500px;float:right}
.text{clear:both}
#text{width:280px;height:25px;color:#ccc}
img{border:none;}
</style>
<script type="text/javascript">

function text(which){
for(var i=0; i<which.elements.length; i++){
var inp = which.elements[i];
if(inp.type == "button"){
continue;
}
inp.onfocus = function (){
if(this.value == this.defaultValue){
this.value = "";
this.style.color = "#000";
}
}
inp.onblur = function(){
if(this.value == "" || this.value.length <= 0){
this.value = this.defaultValue;
this.style.color = "#ccc";
}
}
}
} function biaodan(){
for(var j=0; j<document.forms.length; j++){
text(document.forms[j])
}
}

function nav(target){
var href = target.getAttribute("href");
var img = document.getElementById("img");

img.setAttribute("src",href);
} function bt(){
woman = document.getElementById('text').value;
window.location.href="http://www.google.com.hk/search?hl=zh-CN&source=hp&biw=1024&bih=625&q="+woman+"&btnG=Google+%CB%D1%CB%F7&aq=f&aqi=&aql=&oq=";
}
function jianpan(){
if(event.keyCode==13){
bt();
}
}
</script>
</head><body></body>
<div id="search">
<h1 id="logo">
<a href=""><img src="images/google.jpeg" id="img" /></a>
</h1>
<div class="search_c">
<div id="nav">
<ul>
<li><a href="images/google.jpeg" onclick="nav(this);return false">谷歌</a></li>
<li><a href="images/baidu.png" onclick="nav(this);return false">百度</a></li>
</ul>
</div>
<div class="text">
<form action="" method="post">
<input type="text" id="text" name="text" value="请输入您要搜索的内容!" /> <input type="button" value="搜索" onclick="bt()" onkeydown="jianpan()">
</form>

</div>
</div>
<script type="text/javascript">biaodan();</script>
</div>
</html>

解决方案 »

免费领取超大流量手机卡，每月29元包185G流量+100分钟通话, 中国电信官方发货

onkeydown加错地方了。要加到text框里而不是button里!
<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
*{margin:0;padding:0;}
ul{list-style:none}
body{}
a{text-decoration:none;color:#333;}
#search{font-size:12px;border:1px solid orange;width:600px;margin:50px auto;overflow:hidden}
#nav {height:20px}
#nav li{float:left;padding:0 10px}
#logo{float:left;width:64px;height:64px;overflow:hidden}
.search_c{width:500px;float:right}
.text{clear:both}
#text{width:280px;height:25px;color:#000}
img{border:none;}
</style>
        <script type="text/javascript">

                function text(which){
                    for(var i=0; i<which.elements.length; i++){
                        var inp = which.elements[i];
                        if(inp.type == "button"){
                            continue;
                        }
                        inp.onfocus = function (){
                            if(this.value == this.defaultValue){
                                this.value = "";
                                this.style.color = "#000";
                            }
                        }
                        inp.onblur = function(){
                            if(this.value == "" || this.value.length <= 0){
                                this.value = this.defaultValue;
                                this.style.color = "#ccc";
                            }
                        }
                    }
                }                function biaodan(){
                    for(var j=0; j<document.forms.length; j++){
                        text(document.forms[j])
                    }
                }

                function nav(target){
                    var href = target.getAttribute("href");
                    var img = document.getElementById("img");

                        img.setAttribute("src",href);
                }                function bt(){
                    var  woman = document.getElementById('text').value;
                    window.location.href="http://www.google.com.hk/search?hl=zh-CN&source=hp&biw=1024&bih=625&q="+woman+"&btnG=Google+%CB%D1%CB%F7&aq=f&aqi=&aql=&oq=";
                }
                function jianpan(e){
  var eve=e || window.event;
                    if(eve.keyCode==13){
// alert(3);
                        bt();
                    }
                }
        </script>
</head><body></body>
        <div id="search">
            <h1 id="logo">
                <a href=""><img src="images/google.jpeg" id="img" /></a>
            </h1>
                <div class="search_c">
                    <div id="nav">
                        <ul>
                            <li><a href="images/google.jpeg" onclick="nav(this);return false">谷歌</a></li>
                            <li><a href="images/baidu.png" onclick="nav(this);return false">百度</a></li>
                        </ul>
                    </div>
                    <div class="text">
                                     <input type="text" id="text" name="text1" value="请输入您要搜索的内容!" onkeydown="jianpan(event)"> <input type="button" value="搜索" onclick="bt()">

                    </div>
                </div>
                <script type="text/javascript">biaodan();</script>
        </div>
</html>
<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
*{margin:0;padding:0;}
ul{list-style:none}
body{}
a{text-decoration:none;color:#333;}
#search{font-size:12px;border:1px solid orange;width:600px;margin:50px auto;overflow:hidden}
#nav {height:20px}
#nav li{float:left;padding:0 10px}
#logo{float:left;width:64px;height:64px;overflow:hidden}
.search_c{width:500px;float:right}
.text{clear:both}
#text{width:280px;height:25px;color:#ccc}
img{border:none;}
</style>
        <script type="text/javascript">

                function text(which){
                    for(var i=0; i<which.elements.length; i++){
                        var inp = which.elements[i];
                        if(inp.type == "button"){
                            continue;
                        }
                        inp.onfocus = function (){
                            if(this.value == this.defaultValue){
                                this.value = "";
                                this.style.color = "#000";
                            }
                        }
                        inp.onblur = function(){
                            if(this.value == "" || this.value.length <= 0){
                                this.value = this.defaultValue;
                                this.style.color = "#ccc";
                            }
                        }
                    }
                }                function biaodan(){
                    for(var j=0; j<document.forms.length; j++){
                        text(document.forms[j])
                    }
                }

                function nav(target){
                    var href = target.getAttribute("href");
                    var img = document.getElementById("img");

                        img.setAttribute("src",href);
                }                function bt(){
                    woman = document.getElementById('text').value;
                    window.location.href="http://www.google.com.hk/search?hl=zh-CN&source=hp&biw=1024&bih=625&q="+woman+"&btnG=Google+%CB%D1%CB%F7&aq=f&aqi=&aql=&oq=";
                }
                function jianpan(){
                    if(event.keyCode==13){
                        bt();
                    }
                }
        </script>
</head><body></body>
        <div id="search">
            <h1 id="logo">
                <a href=""><img src="images/google.jpeg" id="img" /></a>
            </h1>
                <div class="search_c">
                    <div id="nav">
                        <ul>
                            <li><a href="images/google.jpeg" onclick="nav(this);return false">谷歌</a></li>
                            <li><a href="images/baidu.png" onclick="nav(this);return false">百度</a></li>
                        </ul>
                    </div>
                    <div class="text">
                            <input type="text" id="text" name="text" value="请输入您要搜索的内容!"  onkeydown="jianpan()"  /> <input type="button" value="搜索" onclick="bt()">

                    </div>
                </div>
                <script type="text/javascript">biaodan();</script>
        </div>
</html>
<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
*{margin:0;padding:0;}
ul{list-style:none}
body{}
a{text-decoration:none;color:#333;}
#search{font-size:12px;border:1px solid orange;width:600px;margin:50px auto;overflow:hidden}
#nav {height:20px}
#nav li{float:left;padding:0 10px}
#logo{float:left;width:64px;height:64px;overflow:hidden}
.search_c{width:500px;float:right}
.text{clear:both}
#text{width:280px;height:25px;color:#ccc}
img{border:none;}
</style>
        <script type="text/javascript">

                function text(which){
                    for(var i=0; i<which.elements.length; i++){
                        var inp = which.elements[i];
                        if(inp.type == "button"){
                            continue;
                        }
                        inp.onfocus = function (){
                            if(this.value == this.defaultValue){
                                this.value = "";
                                this.style.color = "#000";
                            }
                        }
                        inp.onblur = function(){
                            if(this.value == "" || this.value.length <= 0){
                                this.value = this.defaultValue;
                                this.style.color = "#ccc";
                            }
                        }
                    }
                }                function biaodan(){
                    for(var j=0; j<document.forms.length; j++){
                        text(document.forms[j])
                    }
                }

                function nav(target){
                    var href = target.getAttribute("href");
                    var img = document.getElementById("img");

                        img.setAttribute("src",href);
                }                function bt(){
                    woman = document.getElementById('text').value;
                    window.location.href="http://www.google.com.hk/search?hl=zh-CN&source=hp&biw=1024&bih=625&q="+woman+"&btnG=Google+%CB%D1%CB%F7&aq=f&aqi=&aql=&oq=";
                }
                function jianpan(event){
                    if(event.keyCode==13){
                        bt();
                    }
                }
        </script>
</head><body></body>
        <div id="search">
            <h1 id="logo">
                <a href=""><img src="images/google.jpeg" id="img" /></a>
            </h1>
                <div class="search_c">
                    <div id="nav">
                        <ul>
                            <li><a href="images/google.jpeg" onclick="nav(this);return false">谷歌</a></li>
                            <li><a href="images/baidu.png" onclick="nav(this);return false">百度</a></li>
                        </ul>
                    </div>
                    <div class="text">
                            <input type="text" id="text" name="text" value="请输入您要搜索的内容!" onkeydown="jianpan(event)"  /> <input type="button" value="搜索" onclick="bt()">

                    </div>
                </div>
                <script type="text/javascript">biaodan();</script>
        </div>
</html>再不行你把我杀了我艹
已经解决了.把form标签去掉了.但是什么原因啊?
在不去掉form标签的情况下,还有什么办法吗
<!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=gb2312" />
<title>无标题文档</title>
<style type="text/css">
*{margin:0;padding:0;}
ul{list-style:none}
body{}
a{text-decoration:none;color:#333;}
#search{font-size:12px;border:1px solid orange;width:600px;margin:50px auto;overflow:hidden}
#nav {height:20px}
#nav li{float:left;padding:0 10px}
#logo{float:left;width:64px;height:64px;overflow:hidden}
.search_c{width:500px;float:right}
.text{clear:both}
#text{width:280px;height:25px;color:#ccc}
img{border:none;}
</style>
        <script type="text/javascript">

                function text(which){
                    for(var i=0; i<which.elements.length; i++){
                        var inp = which.elements[i];
                        if(inp.type == "button"){
                            continue;
                        }
                        inp.onfocus = function (){
                            if(this.value == this.defaultValue){
                                this.value = "";
                                this.style.color = "#000";
                            }
                        }
                        inp.onblur = function(){
                            if(this.value == "" || this.value.length <= 0){
                                this.value = this.defaultValue;
                                this.style.color = "#ccc";
                            }
                        }
                    }
                }                function biaodan(){
                    for(var j=0; j<document.forms.length; j++){
                        text(document.forms[j])
                    }
                }

                function nav(target){
                    var href = target.getAttribute("href");
                    var img = document.getElementById("img");

                        img.setAttribute("src",href);
                }                function bt(){
                    woman = document.getElementById('text').value;
                    window.location.href="http://www.google.com.hk/search?hl=zh-CN&source=hp&biw=1024&bih=625&q="+woman+"&btnG=Google+%CB%D1%CB%F7&aq=f&aqi=&aql=&oq=";
                }
                function jianpan(event){
                    var e = event || window.event;//兼容firefox
                    if(e.keyCode==13){
                        bt();
                    }
                }
        </script>
</head><body></body>
        <div id="search">
            <h1 id="logo">
                <a href=""><img src="images/google.jpeg" id="img" /></a>
            </h1>
                <div class="search_c">
                    <div id="nav">
                        <ul>
                            <li><a href="images/google.jpeg" onclick="nav(this);return false">谷歌</a></li>
                            <li><a href="images/baidu.png" onclick="nav(this);return false">百度</a></li>
                        </ul>
                    </div>
                    <div class="text">
                            <input type="text" id="text" name="text" value="请输入您要搜索的内容!" onkeydown="jianpan(event)"  /> <input type="button" value="搜索" onclick="bt()">

                    </div>
                </div>
                <script type="text/javascript">biaodan();</script>
        </div>
</html>
就个文本框，要form干啥，一般搜搜都会把参数暴露在url中
第一onkeydown加错了地方,应加文本框里.
第二方法后面return false;

<!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=gb2312" />
    <title>无标题文档</title>
    <style type="text/css">
        *
        {
            margin: 0;
            padding: 0;
        }
        ul
        {
            list-style: none;
        }
        body
        {
        }
        a
        {
            text-decoration: none;
            color: #333;
        }
        #search
        {
            font-size: 12px;
            border: 1px solid orange;
            width: 600px;
            margin: 50px auto;
            overflow: hidden;
        }
        #nav
        {
            height: 20px;
        }
        #nav li
        {
            float: left;
            padding: 0 10px;
        }
        #logo
        {
            float: left;
            width: 64px;
            height: 64px;
            overflow: hidden;
        }
        .search_c
        {
            width: 500px;
            float: right;
        }
        .text
        {
            clear: both;
        }
        #text
        {
            width: 280px;
            height: 25px;
            color: #ccc;
        }
        img
        {
            border: none;
        }
    </style>        <script type="text/javascript">            function text(which) {
                for (var i = 0; i < which.elements.length; i++) {
                    var inp = which.elements[i];
                    if (inp.type == "button") {
                        continue;
                    }
                    inp.onfocus = function() {
                        if (this.value == this.defaultValue) {
                            this.value = "";
                            this.style.color = "#000";
                        }
                    }
                    inp.onblur = function() {
                        if (this.value == "" || this.value.length <= 0) {
                            this.value = this.defaultValue;
                            this.style.color = "#ccc";
                        }
                    }
                }
            }            function biaodan() {
                for (var j = 0; j < document.forms.length; j++) {
                    text(document.forms[j])
                }
            }            function nav(target) {
                var href = target.getAttribute("href");
                var img = document.getElementById("img");                img.setAttribute("src", href);
            }            function bt() {
                woman = document.getElementById('text').value;
                window.location.href = "http://www.google.com.hk/search?hl=zh-CN&source=hp&biw=1024&bih=625&q=" + woman + "&btnG=Google+%CB%D1%CB%F7&aq=f&aqi=&aql=&oq=";
                return false;

            }
            function jianpan() {
                if (event.keyCode == 13) {
                  return   bt();
                }
            }
        </script></head>
<body>
</body>
<div id="search">
    <h1 id="logo">
        <a href="">
            <img src="images/google.jpeg" id="img" /></a>
    </h1>
    <div class="search_c">
        <div id="nav">
            <ul>
                <li><a href="images/google.jpeg" onclick="nav(this);return false">谷歌</a></li>
                <li><a href="images/baidu.png" onclick="nav(this);return false">百度</a></li>
            </ul>
        </div>
        <div class="text">
            <form action="" method="post">
            <input type="text" id="text" name="text" value="请输入您要搜索的内容!"  onkeydown="return jianpan()"/>
            <input type="button" value="搜索" onclick="bt()">

            </form>
        </div>
    </div>    <script type="text/javascript">        biaodan();</script></div>
</html>
或者删除你的<form action="" method="post">