对一个表单提交前的验证,用javascript写的每次都没有验证就提交了,是什么原因啊?
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<script type="text/javascript" src="resource/js/form_and_validation.js"></script>
<script type="text/javascript" src="resource/js/script_city.js"></script>
<script type="text/javascript" src="resource/js/jquery.validate.js"></script>
<div class="mainbox" style="width:550px;">
<form action="index.php?do=task_op&op=taskbid" method="post" id= "check" onSubmit="return validate()">
<input type="hidden" name="task_id" value="{$task_id}">
<input type="hidden" name="obj_id" value="{$task_id}">
<input type="hidden" name="comment_type" value="{$comment_type}">
<table >
<tr>
<td width="100px;"><span style="color:red;">*</span>投标报价:</td>
<td align="left"> <input type="text" name="txt_cash" onkeyup="clearstr(this);" maxlength="10"> 元</td>
</tr>
<tr>
<td><span style="color:red;">*</span>工作周期:</td>
<td align="left"> <input type="text" name="txt_day" onkeyup="clearstr(this);" maxlength="6"> 天</td>
</tr>
<tr>
<td>所在地:</td>
<td id="birthcitybox" align="left">
</td>
</tr>
<tr>
<td>投标留言:</td>
<td>
<textarea rows="16" name="tar_content" id="system-create-location" class="f-textarea editor" style="width:100%;height:200px;"></textarea>
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" name="sbt_bid" value="确定" class="pn pnc">
<input type="reset" name="rst_msg" value="取消" class="pn" onClick="hideWindow('a_comment{$comment_type}')">
<br/>
</td>
</tr>
</table>
</form>
<br>
</div>
<script type="text/javascript">function sp(provinceid, cityid, province) {
var provinces = new Array(
"北京", "上海", "重庆", "安徽", "福建", "甘肃", "广东", "广西", "贵州", "海南", "河北", "黑龙江", "河南",
"香港", "湖北", "湖南", "江苏", "江西", "吉林", "辽宁", "澳门", "内蒙古", "宁夏", "青海", "山东",
"山西", "陕西", "四川", "台湾", "天津", "新疆", "西藏", "云南", "浙江", "海外"
); var html = "<select name=\"" + provinceid + "\" id=\"" + provinceid + "\" onchange=\"setcity('" + provinceid + "', '" + cityid + "');\">";
html = html + "<option value=\"\">选择省份</option>";
for(var i = 0; i < provinces.length; i++) {
html = html + "<option value=\"" + provinces[i] + "\">" + provinces[i] + "</option>";
}
return html = html + "</select>";
}
function sc(cityid, city, provinceid) {
var html = " <select name=\"" + cityid + "\" id=\"" + cityid + "\">";
if(city == ""||city==undefined) {
html = html + "<option value=\"\">选择城市</option>";
} else {
html = html + "<option value=\"" + city + "\">" + city + "</option>";
}
return html = html + "</select>";
}
$(function(){
a = sp('birthprovince','birthcity');
b = sc('birthcity');
$("#birthcitybox").html("<span>"+a+b+"</span>");
})//任务投标提交前的验证add__lucy 2011-5-23
$(document).ready(function(){
$("#check").validate({
errorElement: "font",
errorClass:"error",
rules: {
txt_cash: {
required: true
},
txt_day:{
required:true
}
},
messages: {
txt_cash: {
required: "<font color='red'> 投标报价不能为空</font>"
},
txt_day:{
required:"<font color='red'> 工作周期不能为空</font>"
}
}
});
});</script>
<!--{template footer}-->
按上面这样写可以,要是换成调用下面的函数就不行了,这是为什么啊?function chk(){ var txt_cash = document.getElementById('txt_cash');
var txt_day = document.getElementById('txt_day');
if(txt_cash.value==""){ alert('请输入投标报价!');
document.getElementById('txt_cash').focus();
return false;
}
if(txt_day.value==""){ alert('请输入工作周期!');
document.getElementById().focus();
return false;
}
}