驗証 # 合法字串
CheckStr(obj)
# 1 by Replace
function CheckStr(obj){ 
obj.value = obj.value.replace(/[\s!\\+=\-_\[\]@#$%^&*()|}{"':;?/g><,.]/,"") 
obj.value = obj.value.replace(/[\s!\\+=\-_\[\]@#$%^&*()|}
}# 2 by RegExp
function CheckStr(txt){ var txt=window.document.form1.text1.value; re = /\W/; if (re.test(txt)) {
alert("不合法!只允許輸入英文及數字"); return false; }else
{
window.alert('合法'); } }