我想要一个javascript，当我去index.php时第一次隐藏一些字段。 在我做出选择后，会显示一些字段（取决于选择）。 但是在那个index.php上，有一个表格。在我按“提交”的那一刻，我想留在同一页面上，但这些字段必须保持不变..
但是现在我的所有字段都隐藏了（如第一页加载）？
我的代码：
<script type="text/javascript">
function firstLoad()
{
<!-- HIDE FIELDS ON DOC START -->
$(".diameterRound").hide();
$(".lengthSquare").hide();
$(".lengthRectangle").hide();
$(".material").hide();
$(".thickness").hide();
$(".calculate").hide();
}
window.onload=firstLoad;
</script>
<form method="post" action="<?=$_SERVER['PHP_SELF'];?>">
.... 有人能帮助我吗？我不太了解javascript ..
编辑，我的脚本和表单：
<script type="text/javascript">
function firstLoad()
{
<!-- HIDE FIELDS ON DOC START -->
$(".diameterRound").hide();
$(".lengthSquare").hide();
$(".lengthRectangle").hide();
$(".material").hide();
$(".thickness").hide();
$(".calculate").hide();
}
$(document).ready(function()
{
<!-- GET SELECTED SHAPE -->
$selectedshape=$("input:radio[name='shape']:checked").val();
$('input[type="radio"]').click(function()
{
<!-- ROUND -->
if($(this).attr("value")=="round")
{
$(".diameterRound").show();
$(".material").show();
$(".thickness").show();
$(".calculate").show();
$(".lengthSquare").hide();
$(".lengthRectangle").hide();
<!-- images shape selection goed zetten -->
document.getElementById('roundShape').src = "css/images/roundSelect.jpg";
document.getElementById('oblongShape').src = "css/images/oblong.jpg";
document.getElementById('rectShape').src = "css/images/rect.jpg"
document.getElementById('squareShape').src = "css/images/square.jpg";
}
<!-- SQUARE -->
if($(this).attr("value")=="square")
{
$(".lengthSquare").show();
$(".material").show();
$(".thickness").show();
$(".calculate").show();
$(".diameterRound").hide();
$(".lengthRectangle").hide();
<!-- images shape selection goed zetten -->
document.getElementById('roundShape').src = "css/images/round.jpg";
document.getElementById('oblongShape').src = "css/images/oblong.jpg";
document.getElementById('rectShape').src = "css/images/rect.jpg";
document.getElementById('squareShape').src = "css/images/squareSelect.jpg";
}
<!-- RECTANGLE -->
if($(this).attr("value")=="rectangle")
{
$(".lengthRectangle").show();
$(".material").show();
$(".thickness").show();
$(".calculate").show();
$(".lengthSquare").hide();
$(".diameterRound").hide();
<!-- images shape selection goed zetten -->
document.getElementById('roundShape').src = "css/images/round.jpg";
document.getElementById('squareShape').src = "css/images/square.jpg";
document.getElementById('oblongShape').src = "css/images/oblong.jpg";
document.getElementById('rectShape').src = "css/images/rectSelect.jpg";
}
<!-- OBLONG -->
if($(this).attr("value")=="oblong")
{
$(".lengthRectangle").show();
$(".lengthSquare").hide();
$(".diameterRound").hide();
<!-- images shape selection goed zetten -->
document.getElementById('roundShape').src = "css/images/round.jpg";
document.getElementById('squareShape').src = "css/images/square.jpg";
document.getElementById('rectShape').src = "css/images/rect.jpg";
document.getElementById('oblongShape').src = "css/images/oblongSelect.jpg";
}
});
});
window.onload=firstLoad;
</script>
<form method="post" action="<?=$_SERVER['PHP_SELF'];?>">
<label>
<h2>Step 1: Select your shape</h2>
</label>
<!-- SHAPE SELECTION -->
<div class="row 50%">
<div class="3u 12u(mobilep)">
<label>
<input type="radio" name="shape" value="round" />
<img id="roundShape" src="css/images/round.jpg">
</label>
</div>
<div class="3u 12u(mobilep)">
<label>
<input type="radio" name="shape" value="square" />
<img id="squareShape" src="css/images/square.jpg">
</label>
</div>
<div class="3u 12u(mobilep)">
<label>
<input type="radio" name="shape" value="rectangle" />
<img id="rectShape" src="css/images/rect.jpg">
</label>
</div>
<div class="3u 12u(mobilep)">
<label>
<input type="radio" name="shape" value="oblong" />
<img id="oblongShape" src="css/images/oblong.jpg">
</label>
</div>
</div>
<!-- ROUND - DIAMETER -->
<div class="row 50% diameterRound">
<div class="12u diameterRound">
<input type="text" name="diameterRound" class="diameterRound" id="diameterRound" placeholder="Diameter (mm)" />
</div>
</div>
<!-- SQUARE - LENGTH -->
<div class="row 50% lengthSquare">
<div class="12u lengthSquare">
<input type="text" name="lengthSquare" class="lengthSquare" id="lengthSquare" placeholder="Length (mm)" />
</div>
</div>
<!-- RECTANGLE OBLONG - LENGTH WIDTH -->
<div class="row 50% lengthRectangle">
<div class="6u lengthRectangle">
<input type="text" name="lengthRectangle" class="lengthRectangle" id="lengthRectangle" placeholder="Length (mm)" />
</div>
<div class="6u">
<input type="text" name="widthRectangle" class="widthRectangle" id="widthRectangle" placeholder="Width (mm)" />
</div>
</div>
<div class="row 50% material">
<div class="12u material">
<select class="material" name="material" id="material" >
<option value="" disabled selected>Select your material</option>
<OPTION value="448.38">Mild steel = 45 kg/mm2</OPTION>
<OPTION value="797.12">Stainless steel A4316 = 80 kg/mm2</OPTION>
<OPTION value="523.11">Stainless steel 304 = 52.5 kg/mm2</OPTION>
<OPTION value="199.28">Aluminium = 20 kg/mm2</OPTION>
<OPTION value="1394.96">Hardox 450 = 140 kg/mm2</OPTION>
<OPTION value="1245.50">Raex 400 = 125 kg/mm2</OPTION>
<OPTION value="348.74">Copper = 35 kg/mm2</OPTION>
<OPTION value="548.02">50D Steel = 55 kg/mm2</OPTION>
<OPTION value="617.77">Domex 420 = 62 kg/mm2</OPTION>
<OPTION value="637.69">S355 structual steel = 64 kg/mm2</OPTION>
</select>
</div>
</div>
<div class="row 50% thickness">
<div class="12u thickness">
<input type="text" name="thickness" class ="thickness" id="thickness" placeholder="Thickness of the material (mm)" />
</div>
</div>
<div class="row 50% calculate">
<div class="12u calculate">
<label>
<ul class="actions calculate">
<li><input id="calculate" type="submit" class="button alt" value="Calculate" /></li>
</ul>
</label>
</div>
</div>
</form>
答案 0 :(得分：0)
默认情况下，您可以通过将其CSS设置为 display：none
来隐藏它们答案 1 :(得分：0)
这里你提交没有ajax的页面，所以当你提交表单时，它会重新加载页面并再次执行。这里firstLoad（）函数再次调用，它将隐藏元素。
<强>解决方案
使用ajax进行表单提交。 ajax不会重新加载页面，因此您的元素看起来与选择
相同OR
在提交的帖子数据上放置隐藏元素的一些条件。