select| Control | Problem 1. Both Mozilla and opera do not support this font, and getting rid of the DTD is ineffective. The test is displayed as Arial font under Mozilla Firefox1.5, Opera9.0. and special symbols are supported.
Such as:
<body id= "Www.never-online.net" >
<div style= "Font-family:webdings" >6</div>
<div> </div>
</body>
Can be opened in different browsers, you can see the difference, the previous webdings fonts are not commonly used to find this problem, so it is better to do these pictures later.
2. Option to add select Controls in IE and opera so you can <select id= "sel" >
</select>
<script type= "Text/javascript" >
<! [cdata[
var A=document.getelementbyid ("Sel");
var o=new Option ("Never-online.net", "a", false,false);
A.add (o);
]]>
</script>
But under Mozilla it is a failure and will throw an exception. What if you dynamically add option to the Select control in Mozilla? That's all you need.
<select id= "SEL" >
</select>
<script type= "Text/javascript" >
<! [cdata[
var A=document.getelementbyid ("Sel");
var o=new Option ("Never-online.net", "a", false,false);
A.options.add (o);
]]>
</script>a.options.add (o); it's not like in IE, you can add option directly to a Select control object, and you want to add option to the Options object. Therefore, it is also possible to see from this point that Mozilla requires written code is very strict.
3. Similarly, when you delete, you use the Remove method, but instead of deleting option on the Options object, you do the action on the Select Control object. Code <select id= "SEL" >
</select>
<script type= "Text/javascript" >
<! [cdata[
var A=document.getelementbyid ("Sel");
var o=new Option ("Never-online", "a", false,false);
A.options.add (o);
Alert ("You can see this option added Never-online");
A.remove (0);
Alert ("Delete the added option now");
]]>
</script>
