html page, jsp page data transfer base64 encryption and decryption

    /**
    * string to base64
    */ 
    function _btoa(str) {
        return window.btoa(unescape(encodeURIComponent(str)));
    }
    /**
    * base64 to string
    */
    function _atob(str) {
        return decodeURIComponent(escape(window.atob(str)));
    }

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Origin blog.csdn.net/qq_36161345/article/details/92606221