Javascript 将从<;获取值的代码;span>;元素并对唯一值进行排序
我试着编写代码,从元素中提取值,对唯一值进行排序,最后显示在屏幕上。我的问题是我无法对唯一值进行排序。在我看来,这个问题是一系列的。谢谢你的帮助,对语法错误表示歉意Javascript 将从<;获取值的代码;span>;元素并对唯一值进行排序,javascript,html,arrays,sorting,Javascript,Html,Arrays,Sorting,我试着编写代码,从元素中提取值,对唯一值进行排序,最后显示在屏幕上。我的问题是我无法对唯一值进行排序。在我看来,这个问题是一系列的。谢谢你的帮助,对语法错误表示歉意 <pre id="a"> <span>D</span> <span>C</span> <span>E</span> <span>E</span> <span>D</span> </pre>
<pre id="a">
<span>D</span> <span>C</span> <span>E</span> <span>E</span> <span>D</span> </pre>
<form method="POST" id="form">
<input type="hidden" id="lan" value="" name="number">
<input type="submit" value="patvirtint">
</form>
<script type="text/javascript"> var M=document.getElementById('a');
// counts <span> elements
var N=M.getElementsByTagName('Span');
var largo = N.length;
document.getElementById("form").getElementsByTagName('input')[0].setAttribute("value", largo);
</script>
<?php
// Taking values from form to php code
if (!empty($_POST['number']) && isset($_POST['number'])) {
$counter = 0;
$band = $_POST['number'];
while ($counter<=$band-1) {
// looping values with javascript help
$labas1[]='"'.'<script type="text/javascript"> var M'.$counter.'=document.getElementById(\'a\');
var N'.$counter.'=M'.$counter.'.getElementsByTagName(\'Span\')['.$counter.'].innerHTML; document.write(N'.$counter.');</script>'.'",';
$counter++;
$result = array_unique($labas1);
}
print_r($result);
}
?>
D C E D
var M=document.getElementById('a');
//计数元素
var N=M.getElementsByTagName('Span');
var largo=N.长度;
document.getElementById(“表单”).getElementsByTagName(“输入”)[0].setAttribute(“值”,largo);
您的阵列$labas1
没有您所想的,请尝试以下操作:
<pre id="a">
<span>D</span> <span>C</span> <span>E</span> <span>E</span> <span>D</span>
</pre>
<form method="POST" id="form">
<input type="hidden" id="lan" value="" name="number">
<input type="submit" value="patvirtint">
<input type="hidden" id="myDATA" value="" name="myDATA"/>
</form>
<script type="text/javascript"> var M=document.getElementById('a');
// counts <span> elements
var N=M.getElementsByTagName('Span');
var largo = N.length;
var myData = Array();
for (var i = 0; i < N.length; i++) {
myData[i]=N[i].innerHTML;
}
document.getElementById("myDATA").value=myData;
document.getElementById("form").getElementsByTagName('input')[0].setAttribute("value", largo);
</script>
<?php
// Taking values from form to php code
if (!empty($_POST['number']) && isset($_POST['number'])) {
$counter = 0;
$band = $_POST['number'];
$my_labas1=$_POST['myDATA'];
echo $my_labas1;
$result=explode(",", $my_labas1);
$result = array_unique($result);
echo "<pre>";
var_dump($result);
echo "</pre>";
asort($result);
print_r($result);
}
?>
D C E D
var M=document.getElementById('a');
//计数元素
var N=M.getElementsByTagName('Span');
var largo=N.长度;
var myData=Array();
对于(变量i=0;i
您的阵列$labas1
没有您所想的,请尝试以下操作:
<pre id="a">
<span>D</span> <span>C</span> <span>E</span> <span>E</span> <span>D</span>
</pre>
<form method="POST" id="form">
<input type="hidden" id="lan" value="" name="number">
<input type="submit" value="patvirtint">
<input type="hidden" id="myDATA" value="" name="myDATA"/>
</form>
<script type="text/javascript"> var M=document.getElementById('a');
// counts <span> elements
var N=M.getElementsByTagName('Span');
var largo = N.length;
var myData = Array();
for (var i = 0; i < N.length; i++) {
myData[i]=N[i].innerHTML;
}
document.getElementById("myDATA").value=myData;
document.getElementById("form").getElementsByTagName('input')[0].setAttribute("value", largo);
</script>
<?php
// Taking values from form to php code
if (!empty($_POST['number']) && isset($_POST['number'])) {
$counter = 0;
$band = $_POST['number'];
$my_labas1=$_POST['myDATA'];
echo $my_labas1;
$result=explode(",", $my_labas1);
$result = array_unique($result);
echo "<pre>";
var_dump($result);
echo "</pre>";
asort($result);
print_r($result);
}
?>
D C E D
var M=document.getElementById('a');
//计数元素
var N=M.getElementsByTagName('Span');
var largo=N.长度;
var myData=Array();
对于(变量i=0;i
不会在屏幕中给出任何结果。错误消息:无法设置myDATA的null属性“value”。请原谅我耽误了时间,我很高兴帮助您在屏幕上不给出任何结果。错误消息:无法设置myDATA的null属性“value”。请原谅我耽误了时间,我很乐意帮助您