Pass checkbox value to Edit (using href)

问题

I'm trying to get the value of the selected checkbox to be transfered to the next page using href. I'm not in a position to use submit buttons.I want this to be done using JavaScript.

My checkbox is populated with value from a table row-docid. Here is my code for Checkbox in view.php:

... mysql_connect("$host", "$dbuser", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");
$sql="SELECT * FROM $doctbl_name";
$result=mysql_query($sql);
if(!$result ){ die('Could not get data: ' . mysql_error()); }
while ($row = mysql_fetch_array($result,MYSQL_ASSOC)) {  ?>
<tr><td><input type="checkbox"  name="chk_docid[]" id="<?php echo $row['docid'];?>" 
         value="<?php echo $row['docid'];?>"></td> ...

I have an EDIT Link as a menu in the top in view.php.

<a href="editdoc.php>Document</a>

My question : How do I pass the value of the checked checkbox when I click the edit link.

Note :I searched for a similar question, but could not find one. If I missed any similar question please provide me with the link.

Thanks in advance. Lakshmi

Note: changed the id of the checkbox from chk_docid to the dynamic row value ($row['docid']) as suggested by Jaak Kütt.

回答1:

make sure your inputs have different id-s..

while ($row = mysql_fetch_array($result,MYSQL_ASSOC)) {  ?>
...<input type="checkbox"  name="chk_docid[]" class="chk_input" 
id="chk_docid<?php echo $row['docid'];?>" value="<?php echo $row['docid'];?>">...

using jQuery:

<a href="editdoc.php" id="editdoc">Document</a>

$("#editdoc").click(function(){
    var selection=$("input.chk_input:checked");
    if(selection.length){
        var href=$(this).attr('href')+'?'+selection.serialize();
        $(this).attr('href',href);
    }
    return true;
});

non-jQuery:

<a onclick="submitWithChecked(this,'chk_input')" href="editdoc.php">Document</a>

function submitWithChecked(e,className){
    // fetch all input elements, styled for older browsers
    var elems=document.getElementsByTagName('input');                    
    for (var i = 0; i < elems.length; ++i) {
        // for each input look at only the ones with the class you are intrested in
        if((elems[i].getAttribute('class') === className || elems[i].getAttribute('className') === className) && elems[i].checked){
            // check if you need to add ? or & infront of a query part
            e.href+=(!i && e.href.indexOf('?')<0)?'?':'&';
            // append elements name and value to the query  
            e.href+=elems[i].name+'='+encodeURIComponent(elems[i].value);
        }
    }    
    return true;
}

in editdoc.php fetch the values with php using $_GET['name_of_input_element']

回答2:

I found a solution!!!

Though I did it in a different way, I thank Jaak Kütt for all the support and helping me to think of a possible way..

This is what I did.. I named the form as showForm and moved to editdoc.php through the function itself.

My Check Box :

<form name="showForm">
<input type="checkbox" name="chk_docid[]" id="<?php echo $row['docid'];?>" value="<?  php echo $row['docid'];?>">

My Link:

<a id="a_editdoc" onclick="getchkVal();" title="Edit Document">Document</a>

The corresponding script:

<script>
    function getchkVal() {
        var contents, vals = [], mydocid =  document.forms['showForm']['chk_docid[]'];
        for(var i=0,elm;elm = mydocid[i];i++) {
            if(elm.checked) {
                vals.push(encodeURIComponent(elm.value)); 
            }    
        }
        contents = vals.join(',');
        window.location="editdoc.php"+"?v="+contents;     
    }
</script>

In the editdoc.php :

<?php
    $cval=$_GET['v'];
?>

Thanks.

来源：https://stackoverflow.com/questions/18330367/pass-checkbox-value-to-edit-using-href

标签

javascript

variables

checkbox

href