funsion en javascript

[gjx2]

Se me ocurre esto.


Javascript:

Código Javascript:

function Activo(){
    for(a=1;a<5;a++){
    id = "text_"+a; 
        deshabilita(byId(id));
    }
} 
 
 
function byId(l){
    return document.getElementById(l);
}
 
function deshabilita(l){ 
 
    if(l.disabled){
     l.disabled = ""; 
    }else{
     l.disabled = "disabled"; 
    }
 
}
 

HTML

Código HTML:

<form>
<input type="text" id="text_1" value="Text1" >
<input type="text" id="text_2" value="Text2" ><br>
<input type="text" id="text_3" value="Text3" disabled="disabled" >
<input type="text" id="text_4" value="Text4"  disabled="disabled"><br>
 
Habilitar<input type="radio" id="tr" value="1" onClick="Activo()" name="Op" checked="checked" ><br>
Deshabilitar<input type="radio" id="tr" value="0" name="Op" onClick="Activo()"><br>
</form>