How to enable a disabled text field?

问题

I wanna know how do I enable a disabled form text field on submit. Also I wanna make sure if user goes back to form or click reset field will show again as disabled.

I tried to use

document.pizza.field07.disabled = false ;

It does disables the field, by clicking reset or hitting back button still keeps it enable.

Please guide.

回答1:

To access this element in a more standard way, use document.getElementById with setAttribute

document.getElementById("field07").setAttribute("disabled", false);

EDIT

Based on your comment, it looks like field07 is a name, not an id. As such, this should be what you want:

var allfield7s = document.getElementsByName("field07");
for (var i = 0; i < allfield7s.length; i++)
    allfield7s[i].setAttribute("disabled", false);

回答2:

That is the only working solution for Me:

var allfield7s = document.getElementsByName("field07");
for (var i = 0; i < allfield7s.length; i++)
    allfield7s[i].removeAttribute("disabled");

回答3:

You can enable a disabled html control with the following JavaScript code.

document.getElementById('elementId').removeAttribute('disabled');

回答4:

You can also do this with jQuery:

$(function(){
    $("[name='field07']").prop("disabled", false);
});

We simply select all the elements where the name attribute is field07 (using name because you said so in the comments of @AdamRackis's answer) and set its disabled property to false.

More about prop().

来源：https://stackoverflow.com/questions/8484181/how-to-enable-a-disabled-text-field