Conversion code of Chinese characters and Unicode codes in javascript

<Textarea id = "codes" style = "width: 500px; height: 300px "> </p> <input type =" button "value =" Unicode encryption "onclick =" javascript: codes. value = classObj. toUnicode (codes. value) "> <input type =" button "value =" Unicode decryption "onclick =" javascript: codes. value = classObj. unUnicode (codes. value) "> <input type =" button "value =" copy the text above "onclick = 'javascript: classObj. copyingTxt ("codes") '> <input type = "button" value = "clear content above" onclick = 'javascript: codes. value = "" '>
[Ctrl + A select all Note: If you need to introduce external Js, You need to refresh it to execute]