.setAttribute(“disabled”, false); changes editable attribute to false

问题

I want to have textboxes related to radiobuttons. Therefore each radio button should enable it's textbox and disable the others. However when I set the disabled attribute of textbox to true, it changes the editable attribute too. I tried setting editable attribute true again but it did not work.

This was what I tried:

JS function:

function enable(id)
{
    var eleman = document.getElementById(id);
    eleman.setAttribute("disabled", false);
    eleman.setAttribute("editable", true);
}

XUL elements:

<radio id="pno" label="123" onclick="enable('ad')" />
<textbox id="ad" editable="true"  disabled="true" flex="1" emptytext="asd" onkeypress="asd(event)" tooltiptext="" >

回答1:

A disabled element is, (self-explaining) disabled and thereby logically not editable, so:

set the disabled attribute [...] changes the editable attribute too

Is an intended and well-defined behaviour.

The real problem here seems to be you're trying to set disabled to false via setAttribute() which doesn't do what you're expecting. an element is disabled if the disabled-attribute is set, independent of it's value (so, disabled="true", disabled="disabled" and disabled="false" all do the same: the element gets disabled). you should instead remove the complete attribute:

element.removeAttribute("disabled");

or set that property directly:

element.disabled = false;

回答2:

Just set the property directly: .

eleman.disabled = false;

回答3:

Try doing this instead:

function enable(id)
{
    var eleman = document.getElementById(id);
    eleman.removeAttribute("disabled");        
}

To enable an element you have to remove the disabled attribute. Setting it to false still means it is disabled.

http://jsfiddle.net/SRK2c/

回答4:

Using method set and remove attribute

function radioButton(o) {

  var text = document.querySelector("textarea");

  if (o.value == "on") {
    text.removeAttribute("disabled", "");
    text.setAttribute("enabled", "");
  } else {
    text.removeAttribute("enabled", "");
    text.setAttribute("disabled", "");
  }
  
}

<input type="radio" name="radioButton" value="on" onclick = "radioButton(this)" />Enable
<input type="radio" name="radioButton" value="off" onclick = "radioButton(this)" />Disabled<hr/>

<textarea disabled ></textarea>

回答5:

the disabled attributes value is actally not considered.. usually if you have noticed the attribute is set as disabled="disabled" the "disabled" here is not necessary persay.. thus the best thing to do is to remove the attribute.

element.removeAttribute("disabled");

also you could do

element.disabled=false;

回答6:

just replace 'myselect' with your id

to disable->

document.getElementById("mySelect").disabled = true;

to enable->

document.getElementById("mySelect").disabled = false;

来源：https://stackoverflow.com/questions/7526601/setattributedisabled-false-changes-editable-attribute-to-false

标签

javascript

firefox

firefox-addon

xul