插件怎么樣：

$.fn.superScript = function() {

var chars = '+?=()0123456789Aa???ɑ?Bbc?DdeEe?????fGgɡ?hH?Ii????jJ??KklL???Mm?Nn????Oo?????Pp?rR???s??Tt?Uu???????vV??wWxyz?????βγδθφχн???',

sup = '??????123???????????????????????????????????????????????????????????????????????????????????????????????????????????????????';

return this.each(function() {

this.value = this.value.replace(/^{]*>(.*?)/g, function(x) {}

var str = '',

txt = $.trim($(x).unwrap().text());

for (var i=0; i

var n = chars.indexOf(txt[i]);

str += (n!=-1 ? sup[n] : txt[i]);

}

return str;

});

});

}

叫做：

$('input').superScript();

可能也可能綁定到keyup等,而且很容易轉換為普通的javascript而不是jQuery,但我剛剛創建它,所以如果它工作,修改它以滿足你的需求？