当我只知道它的“名称” - 属性时，如何通过jQuery设置input-element的值

Question

I need to reset some text-boxes which only have an unique name (not an unique id). I tried it with jQuery, but my code seems to do nothing:

$('input[name=customergroupname]').value="";

Answer 1

尝试这个：

$('input[name="customergroupname"]').val("");

Answer 2

Getting and setting value of form elements wrapped in a jQuery object is being done with use jQuery val function:

$('input[name="customergroupname"]').val("");

.value can only be used for DOM elements, like this:

$('input[name="customergroupname"]').eq(0).value ="";

$(...)       // This is a jQuery object.
$(...)[n]    // This is a DOM object in the nth place in the set.
$(...).eq(n) // This is a DOM object in the nth place in the set.

Answer 3

Working demo http://jsfiddle.net/vN74v/2/

Code

$('#hullk').click(function(){ // in example when you click the button
    $('input[name="customergroupname"]').val("");
});
​

Answer 4

According to DOM level 2 specifications , you can access:

document.forms["foo"].elements["customergroupname"].value = '';

If formName and fieldName are constants rather than variables you can use literal syntax:

document.forms.foo.elements.customergroupname.value = '';

Answer 5

try:

$('input[name="customergroupname"]').value="";

I've wrapped customergroupname in quotes.

Very true, I mixed the quotes up. Edited now.