how to pass input(type = text ) from a html form to javascript function - Stack Overflow

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i want to pass the udid taken from textfield to function getusername.

<tr>
     <td> Enter Udid : </td>
     <td> <input name="udid" id="udid" type="text" value="{{udid}}" size="50"></td>
</tr>

<td> 
     <input type="button" value="Get User Name(udid)" onclick="getUserName(udid);"> 
</td>

i want to pass the udid taken from textfield to function getusername.

<tr>
     <td> Enter Udid : </td>
     <td> <input name="udid" id="udid" type="text" value="{{udid}}" size="50"></td>
</tr>

<td> 
     <input type="button" value="Get User Name(udid)" onclick="getUserName(udid);"> 
</td>

• javascript
• html

Share Improve this question Follow asked Sep 13, 2012 at 7:27 yasiryasir 13722 silver badges1414 bronze badges 1

• I am not really a pro in javascript, but i think you should pass id of the element, since u are initializing id=udid. – Shafi Commented Sep 13, 2012 at 7:31

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2 Answers 2

Sorted by: Reset to default 3

This should work:

onclick="getUserName(document.getElementById('udid').value);"

Try this code:

In your html:

<input type="button" value="Get User Name(udid)" onclick="getUserName(document.getElementById('udid'));">

Function javascript:

function getUserName(id){
    alert(id.value);
}

Look at this demo: JSFIDDLE

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