一段自用代码——Unicode与ASCII互转

<SCRIPT language=JavaScript type="text/javascript">
function paste() { //粘
	var clipboard = window.clipboardData.getData('text');
	clipboard == null ? alert('无内容') : source.value = clipboard;
}

function A2U() { //ASCII -> Unicode转
	if (parseFloat(ScriptEngineMajorVersion() + '.' + ScriptEngineMinorVersion()) < 5.5) { alert('浏览器版本过低，低于5.5'); return; }
	if (source.value == '') { alert('无内容'); return; }
	result.value = '';
	for (var i=0; i<source.value.length; i++)
	result.value += '&#' + source.value.charCodeAt(i) + ';';
}

function U2A() { //Unicode -> ASCII转
	var code = source.value.match(/&#(\d+);/g);
	if (code == null) { alert('没有Unicode'); return; }
	result.value = '';
	
	for (var i=0; i<code.length; i++)
	result.value += String.fromCharCode(code[i].replace(/[&#;]/g, ''));
}

function preview() { //预
	var win = window.open();
	win.document.open('text/html', 'replace');
	win.document.writeln(result.value);
	win.document.close();
}



function copy() { //
	result.value == '' ? alert('无内容') : window.clipboardData.setData('text', result.value);
}
</SCRIPT>