各种文字编码解码方式大合集

统一的函数以下几种编码解码方式需要使用

function left_zero_4(str) {

            if (str != null && str != '' && str != 'undefined') {

                if (str.length == 2) {

                    return '00' + str;

                }

            }

            return str;

        }

中文汉字转Unicode

function unicode(str){

            var value='';

            for (var i = 0; i < str.length; i++) {

                value += '\u' + left_zero_4(parseInt(str.charCodeAt(i)).toString(16));

            }

            return value;

        }

        function left_zero_4(str) {

            if (str != null && str != '' && str != 'undefined') {

                if (str.length == 2) {

                    return '00' + str;

                }

            }

            return str;

        }

Unicode转中文汉字、ASCII转换Unicode

function reconvert(str){

            str = str.replace(/(\u)(w{1,4})/gi,function($0){

                return (String.fromCharCode(parseInt((escape($0).replace(/(%5Cu)(w{1,4})/g,"$2")),16)));

            });

            str = str.replace(/(&#x)(w{1,4});/gi,function($0){

                return String.fromCharCode(parseInt(escape($0).replace(/(%26%23x)(w{1,4})(%3B)/g,"$2"),16));

            });

            str = str.replace(/(&#)(d{1,6});/gi,function($0){

                return String.fromCharCode(parseInt(escape($0).replace(/(%26%23)(d{1,6})(%3B)/g,"$2")));

            });

             

            return str;

        }

Unicode转换ASCII

function unicode1(str){

    var value='';

    for (var i = 0; i < str.length; i++)

        value += '&#' + str.charCodeAt(i) + ';';

    return value;

}

中文转换&#XXXX

function ascii(str){

    var value='';

    for (var i = 0; i < str.length; i++) {

        value += '&#x' + left_zero_4(parseInt(str.charCodeAt(i)).toString(16))+';';

    }

    return value;

}

 

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