php - Why can't I pass a string as a parameter in a Javascript function? - Stack Overflow

admin管理员组

文章数量:1290186

I have the following code in php:

<?php
$apples = 123123;
echo "<td>
         <input type='button' onclick='confirmation($apples)' value='ac/in'>
      </td>";

echo('<script type="text/javascript">
           function confirmation(test) {
              var answer = confirm("Are you sure?")
              if (answer){
                  alert(test);
                  $.get("/index.php?f=func_name_to_call", 
                  {name: "John", hobby: "Programming"}, function(data) {});
              }
           }
</script>');
?>

If $apples is a number then the parameter gets passed correctly; however when it is a string, the function confirmation() is broken. Any ideas? Thanks in advance.

I have the following code in php:

<?php
$apples = 123123;
echo "<td>
         <input type='button' onclick='confirmation($apples)' value='ac/in'>
      </td>";

echo('<script type="text/javascript">
           function confirmation(test) {
              var answer = confirm("Are you sure?")
              if (answer){
                  alert(test);
                  $.get("/index.php?f=func_name_to_call", 
                  {name: "John", hobby: "Programming"}, function(data) {});
              }
           }
</script>');
?>

If $apples is a number then the parameter gets passed correctly; however when it is a string, the function confirmation() is broken. Any ideas? Thanks in advance.

• php
• javascript
• function
• arguments

Share Improve this question Follow edited Jan 23, 2013 at 5:23 Yogesh Pingle 3,66533 gold badges1818 silver badges1616 bronze badges asked Jan 23, 2013 at 5:18 unwise guyunwise guy 1,12888 gold badges1818 silver badges2727 bronze badges 1

• 1 If you send a string, it must be treated like so. Quote it. – Alfabravo Commented Jan 23, 2013 at 5:21

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 7

If you want it to pass argument as string use the below edited code

echo "<td><input type='button' onclick='confirmation(\"$apples\")' value='ac/in'></td>";

Just use \ for escaping the double quotes,and it will be considered as a string.

Yes you have to use escape character \" \" in calling confirmation function because you pass integer in a integer type parameter which is without double quotes.therefore it converts the string into integer...

<?php
$apples = 123123;
?>
<td>
    <input type='button' onclick='confirmation(<?php echo $apples?>)' value='ac/in'>
</td>

<script type="text/javascript">
    function confirmation(test) {
        var answer = confirm("Are you sure?")
        if (answer){
            alert(test);
            $.get("/index.php?f=func_name_to_call", 
            {name: "John", hobby: "Programming"}, function(data) {});
        }
    }
</script>

you'll run into the trouble of converting all those ' into " since your echoing them by php, just an advice dont echo them, use the html markup and just escape your php

本文标签： phpWhy can39t I pass a string as a parameter in a Javascript functionStack Overflow