Javascript 使用innerHTML添加时,字段变为空
嗨,我正在尝试创建一个允许添加更多字段的页面 我有它添加新的领域的网页,但他们清除。我需要它来保存一个循环,但我似乎无法理解逻辑 如果有任何帮助,我们将不胜感激。这是我目前的代码Javascript 使用innerHTML添加时,字段变为空,javascript,Javascript,嗨,我正在尝试创建一个允许添加更多字段的页面 我有它添加新的领域的网页,但他们清除。我需要它来保存一个循环,但我似乎无法理解逻辑 如果有任何帮助,我们将不胜感激。这是我目前的代码 <!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.or
<!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=utf-8" />
<title>Untitled Document</title>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"></script>
<script type="text/javascript" charset="utf-8">
$(function(){
$(".datepicker").live('click', function() {
$(this).datepicker({showOn:'focus'}).focus();
});
});
</script>
<script type="text/javascript">
var num=0;
function addField(){
num++;
if(num>14){num--;}
makefields();
}
function rmField(){
num--;
if(num<0){num++;}
makefields();
}
function makefields(){
var fields="";
for(var o=0;o<=num;o++){
fields+="<p><label>Ingredients</label><input name=\"txtingredient"+o+"\" type=\"text\" class=\"text-long\"/>";
fields+="<label>Quantity:</label><input name=\"txtqty"+o+"\" type=\"text\" class=\"text-long\" /> or / ";
fields+="<label>Weight</label><input name=\"txtweight"+o+"\" type=\"text\" class=\"text-long\" /></p>";
}
fields+="<br/><input type=\"hidden\" name=\"num\" value=\""+o+"\"/>";
if(num!=14){fields+="<button type=\"button\" onclick=\"addField()\">Add</button>";}
if(num>0){fields+="<button type=\"button\" onclick=\"rmField()\">Remove</button>";}
fields+="<input type=\"submit\" value=\"Add recipe\"/></form>";
document.getElementById("fields").innerHTML=fields;
}
</script>
<script language="JavaScript" src="calendar_us.js"></script>
</head>
<body>
<form name="frmaddservice" action="add-recipe.php" method="post" class="jNice" onsubmit="return checkaddservice();">
<fieldset>
<p>
<label>Recipe Name:</label>
<input name="txtname" type="text" class="text-long" id="txtname" />
</p>
<p>
<label>Discription:</label>
<input name="txtdetails" type="text" class="text-long" id="txtdetails" />
</p>
<p>
<label>Cat:</label>
<select name="cat" id="cat">
<option>Select Type</option>
</select>
</p>
<div id="fields">
<p><label></label>
</p>
<p>
<label>Ingredient </label>
<input name="txtingredient0" type="text" class="text-long" id="txtingredient0" />
<label>Quantity:</label>
<input name="txtqty0" type="text" class="text-long" id="txtqty0"/>
or /
<label>Weight</label>
<input name="txtweight0" type="text" class="text-long" id="txtweight0" />
</p>
<p><label></label>
</p>
<input type="hidden" name="num" value="1"/><a href="#" onclick="addField()">Add ingredient</a>
<input type="submit" value="Add recipe"/>
</div><label></label>>
</fieldset>
</form>
</body>
</html>
无标题文件
$(函数(){
$(“.datepicker”).live('click',function(){
$(this.datepicker({showOn:'focus'}).focus();
});
});
var num=0;
函数addField(){
num++;
如果(num>14){num--;}
makefields();
}
函数rmField(){
num--;
如果(num0){fields+=“Remove”;}
字段+=“”;
document.getElementById(“字段”).innerHTML=字段;
}
配方名称:
描述:
类别:
选择类型
成分
数量:
或/
重量
>
有很多问题
看看这个。注意返回false,我使用jQuery更改数据
<!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=utf-8" />
<title>Untitled Document</title>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"></script>
<script type="text/javascript" charset="utf-8">
$(function(){
$(".datepicker").live('click', function() {
$(this).datepicker({showOn:'focus'}).focus();
});
});
</script>
<script type="text/javascript">
var num=0;
function addField(){
num++;
if(num>14){num--;}
makefields();
return false;
}
function rmField(){
num--;
if(num<0){num++;}
makefields();
}
function makefields(){
var fields="";
for(var o=0;o<=num;o++){
fields+='<p><label>Ingredients</label><input name="txtingredient'+o+'" type="text" class="text-long"/>';
fields+='<label>Quantity:</label><input name="txtqty'+o+'" type="text" class="text-long" /> or ';
fields+='<label>Weight</label><input name="txtweight'+o+'" type="text" class="text-long" /></p>';
}
fields+='<br/><input type="hidden" name="num" value="'+o+'"/>';
if(num!=14){fields+='<button type="button" onclick="addField()">Add</button>';}
if(num>0){fields+='<button type="button" onclick="rmField()">Remove</button>';}
fields+='<input type="submit" value="Add recipe"/>';
$("#fields").append(fields);
}
function checkaddservice(){ return false}
</script>
<script language="JavaScript" src="calendar_us.js"></script>
</head>
<body>
<form name="frmaddservice" action="add-recipe.php" method="post" class="jNice" onsubmit="return checkaddservice();">
<fieldset>
<p>
<label>Recipe Name:</label>
<input name="txtname" type="text" class="text-long" id="txtname" />
</p>
<p>
<label>Discription:</label>
<input name="txtdetails" type="text" class="text-long" id="txtdetails" />
</p>
<p>
<label>Cat:</label>
<select name="cat" id="cat">
<option>Select Type</option>
</select>
</p>
<div id="fields">
<p>
<label>Ingredient </label>
<input name="txtingredient0" type="text" class="text-long" id="txtingredient0" />
<label>Quantity:</label>
<input name="txtqty0" type="text" class="text-long" id="txtqty0"/>
or /
<label>Weight</label>
<input name="txtweight0" type="text" class="text-long" id="txtweight0" />
</p>
<p><label></label>
</p>
<input type="hidden" name="num" value="1"/><a href="#" onclick="return addField()">Add ingredient</a>
<input type="submit" value="Add recipe"/>
</div>
</fieldset>
</form>
</body>
</html>
无标题文件
$(函数(){
$(“.datepicker”).live('click',function(){
$(this.datepicker({showOn:'focus'}).focus();
});
});
var num=0;
函数addField(){
num++;
如果(num>14){num--;}
makefields();
返回false;
}
函数rmField(){
num--;
如果(num0){fields+='Remove';}
字段+='';
$(“#字段”)。追加(字段);
}
函数checkaddservice(){return false}
配方名称:
描述:
类别:
选择类型
成分
数量:
或/
重量
清除该字段的原因是,您正在使用innerHTML添加该字段。以前的内容将替换为存储的新元素。如果您了解JQuery,这将更容易。不管怎么说,这里是示例工作代码,请看一下更改
<!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=utf-8" />
<title>Untitled Document</title>
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/base/jquery-ui.css" rel="stylesheet" type="text/css"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script>
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.11/jquery-ui.min.js"></script>
<script type="text/javascript" charset="utf-8">
$(function(){
$(".datepicker").live('click', function() {
$(this).datepicker({showOn:'focus'}).focus();
});
});
</script>
<script type="text/javascript">
var num=0;
var fieldCount = 1;
function addField(){
makefields(fieldCount++);
}
function rmField(fieldId){
var remThis = document.getElementById(fieldId);
remThis.parentNode.removeChild(remThis);
}
function makefields(){
var fields="";
fields+="<p><label>Ingredients</label><input name=\"txtingredient"+fieldCount+"\" type=\"text\" class=\"text-long\"/>";
fields+="<label>Quantity:</label><input name=\"txtqty"+fieldCount+"\" type=\"text\" class=\"text-long\" /> or / ";
fields+="<label>Weight</label><input name=\"txtweight"+fieldCount+"\" type=\"text\" class=\"text-long\" />";
fields+='<input type="button" value="remove" onClick="rmField(\'fieldCnt'+fieldCount+'\')" /></p>';
var newDiv = document.createElement('div');
newDiv.innerHTML = fields;
newDiv.setAttribute('id', 'fieldCnt' + fieldCount);
document.getElementById('fieldContainer').appendChild(newDiv);
}
</script>
<script language="JavaScript" src="calendar_us.js"></script>
</head>
<body>
<form name="frmaddservice" action="add-recipe.php" method="post" class="jNice" onsubmit="return checkaddservice();">
<fieldset>
<p>
<label>Recipe Name:</label>
<input name="txtname" type="text" class="text-long" id="txtname" />
</p>
<p>
<label>Discription:</label>
<input name="txtdetails" type="text" class="text-long" id="txtdetails" />
</p>
<p>
<label>Cat:</label>
<select name="cat" id="cat">
<option>Select Type</option>
</select>
</p>
<div id="fields">
<p><label></label>
</p>
<div id="fieldContainer">
<div id="fieldCnt1">
<p>
<label>Ingredient </label>
<input name="txtingredient0" type="text" class="text-long" id="txtingredient0" />
<label>Quantity:</label>
<input name="txtqty0" type="text" class="text-long" id="txtqty0"/>
or /
<label>Weight</label>
<input name="txtweight0" type="text" class="text-long" id="txtweight0" />
<input type="button" value="remove" onClick="rmField('fieldCnt1')" />
</p>
</div>
</div>
<p><label></label>
</p>
<input type="hidden" name="num" value="1"/><a href="#" onclick="addField()">Add ingredient</a>
<input type="button" value="Add Ingredient" onClick="addField()"/>
<input type="submit" value="Add recipe"/>
</div><label></label>>
</fieldset>
</form>
</body>
</html>
无标题文件
$(函数(){
$(“.datepicker”).live('click',function(){
$(this.datepicker({showOn:'focus'}).focus();
});
});
var num=0;
var fieldCount=1;
函数addField(){
makefields(fieldCount++);
}
函数rmField(fieldId){
var remThis=document.getElementById(fieldId);
remThis.parentNode.removeChild(remThis);
}
函数makefields(){
var字段=”;
字段+=“成分”;
字段+=“数量:或/”;
字段+=“权重”;
字段+='';
var newDiv=document.createElement('div');
newDiv.innerHTML=字段;
newDiv.setAttribute('id','fieldCnt'+fieldCount);
document.getElementById('fieldContainer').appendChild(newDiv);
}
配方名称:
描述:
类别:
选择类型
成分
数量:
或/
重量
>
Hi-mplugjan,我看到了这一点,我找到了一种模拟方法来显示字段,它创建了所有内容的多个。因此,您需要定义要创建的内容。我帮不了你。这是你的决定。