var字符串；
函數showUnico(){
if(document . getelementbyid(" before ")value . length & gt；0){
str = escape(document . getelementbyid(" before ")。值)；
document.getElementById("after ")。value = str
}
Else alert("請輸入要加密的代碼")；
}
函數showHtml(){
if(document . getelementbyid(" after ")value . length & gt；0){
str = unescape(document . getelementbyid(" after ")。值)；
document . getelementbyid(" before ")。value = str
}
Else alert("請輸入密碼解密")；
}
函數clearBoth(){
document . getelementbyid(" before ")。值= " "；
document.getElementById("after ")。值= " "；
}
& lt/script & gt；
& ltbody & gt
& lt中心& gt
& lt表& gt
& lttr & gt
& ltth & gt加密前
& ltth & gt加密後
& lt/tr & gt；
& lttr & gt
& lttd & gt
& lttextarea id = " before " style = " width:200 px；身高:174px " >& lt/textarea & gt；
& lt/TD & gt；
& lttd & gt
& lttextarea id = " after " style = " width:200 px；身高:174px " >& lt/textarea & gt；
& lt/TD & gt；
& lt/tr & gt；
& lt/table & gt；
& ltbr & gt
& ltinput type = " button " value = " encryption " onclick = " showUnico()" & gt；
& ltinput type = " button " value = " decryption " onclick = " show html()" & gt；
& ltinput type = " button " value = " empty all " onclick = " clear both()" & gt；
& lt/center & gt；
& lt/body & gt；