CODEWITHSUNDEEP
javascriptjsp
DeveloperJava
DeveloperJava

Reputation: 529

Why Javascript throws this error

I have following javascript in which I want assign value of str to hidden field "abc" in form "form". It produces value of str in alert box but when I try to assign that value to abc using "document.forms[form].abc.value=str;" Then throws following error...

Message: 'document.forms.form.abc' is null or not an object
Line: 140
Char: 5
Code: 0

The variable image_url contains one url which is dynamically generated such as http://localhist/local/..../1234.jpg

How Do I get rid on this...

<script language="JavaScript">
        function imgurl()
        {
            var str=image_url;
            alert("Image Stored @"+str);

            document.forms["form"].abc.value=str;
            //document.getElementById('url').innerHTML=str;

        }
    </script>


 <form name="form">
    <input type="button" value="URL" onclick="javascript:imgurl();">
                            </td><br>
            <td valign=top>
                <div id="upload_results" style="border:2px black"></div><br/>
                <input type="hidden" name="abc" value="">
                <br/><p id="url"/>
            </td>
            </tr>
    </form>

Upvotes: 0

Views: 137

Answers (1)

adarshr
adarshr

Reputation: 62573

Use ids. 

<input type="hidden" id="abc" name="abc" value="">

JavaScript:

function imgurl() {
    document.getElementById("abc").value = img_url;
}

Upvotes: 1

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