Question

如何使用jquery创建n个sms计数？

像这个代码只有3个短信计数。我需要使用类似相同代码的N个sms计数。怎么办？

$('#smsText').smsArea();

HTML：

<b id="smsCount"></b> SMS (<b id="smsLength"></b>) Characters left
<textarea id="smsText"></textarea>

(function($){
    $.fn.smsArea = function(options){

    var
    e = this,
    cutStrLength = 0,

    s = $.extend({

        cut: true,
        maxSmsNum: 3,
        interval: 400,

        counters: {
            message: $('#smsCount'),
            character: $('#smsLength')
        },

        lengths: {
            ascii: [160, 306, 459],
            unicode: [70, 134, 201]
        }
    }, options);


    e.keyup(function(){

        clearTimeout(this.timeout);
        this.timeout = setTimeout(function(){
   var
            smsType,
            smsLength = 0,
            smsCount = -1,
            charsLeft = 0,
            text = e.val(),
            isUnicode = false;

            for(var charPos = 0; charPos < text.length; charPos++){
                switch(text[charPos]){
                    case "\n": 
                    case "[":
                    case "]":
                    case "\\":
                    case "^":
                    case "{":
                    case "}":
                    case "|":
                    case "€":
                        smsLength += 2;
                    break;

                    default:
                        smsLength += 1;
                }


                if(text.charCodeAt(charPos) > 127 && text[charPos] != "€") isUnicode = true;
            }

            if(isUnicode){
                smsType = s.lengths.unicode;

            }else{
                smsType = s.lengths.ascii;
            }

            for(var sCount = 0; sCount < s.maxSmsNum; sCount++){

                cutStrLength = smsType[sCount];
                if(smsLength <= smsType[sCount]){

                    smsCount = sCount + 1;
                    charsLeft = smsType[sCount] - smsLength;
                    break
                }
            }

            if(s.cut) e.val(text.substring(0, cutStrLength));
            smsCount == -1 && (smsCount = s.maxSmsNum, charsLeft = 0);

            s.counters.message.html(smsCount);
            s.counters.character.html(charsLeft);

        }, s.interval)
    }).keyup()
}}(jQuery));

我试过短信字符计数。但这段代码只有3个短信。我需要n个短信计数。喜欢创造超过100或200短信。如果任何一个知道意味着发送查询。

Answer 1

在此代码中，作者给出的数组的最大长度仅为3 sms：

lengths: {
    ascii: [160, 306, 459],
    unicode: [70, 134, 201]
}

根据this thread，它计算如下：

一个普通的ASCII短信将有160个可用字符
如果你传递给2个sms，则需要一个特定的头来发送2个sms作为1个消息（我认为是UDH）。此标头每个短信需要7个字符。所以，2个短信有（160 - 7）+（160 - 7）= 153 + 153 = 306个可用字符
unicode的机制相同，但最大长度为70，UDH为3个字符

所以你必须开发一个函数来计算给定数量的短信的最大可用字符数，我建议：

function calculateSmsMaxLength (isUnicode, writtenSmsNb) {

                if (isUnicode) {
                    if (writtenSmsNb == 0) {
                        return 70;
                    } else {
                        return (70 * (writtenSmsNb + 1)) - ((writtenSmsNb + 1) * 3);
                    }
                } else {
                    if (writtenSmsNb == 0) {
                        return 160;
                    } else {
                        return (160 * (writtenSmsNb + 1)) - ((writtenSmsNb + 1) * 7);
                    }
                }
            }

isUnicode：true或false，具体取决于短信的内容

writtenSmsNb：要为其计算最大可用字符数的短信数。

最后，这是... mmmh的代码，比方说5个最大短信：

(function($){
$.fn.smsArea = function(options){

    var e = this,
        cutStrLength = 0,

        s = $.extend({

            cut: true,
            maxSmsNum: 5,
            interval: 400,

            counters: {
                message: $('#smsCount'),
                character: $('#smsLength')
            },

            calculateSmsMaxLength : function (isUnicode, writtenSmsNb) {

                if (isUnicode) {
                    if (writtenSmsNb == 0) {
                        return 70;
                    } else {
                        return (70 * (writtenSmsNb + 1)) - ((writtenSmsNb + 1) * 3);
                    }
                } else {
                    if (writtenSmsNb == 0) {
                        return 160;
                    } else {
                        return (160 * (writtenSmsNb + 1)) - ((writtenSmsNb + 1) * 7);
                    }
                }
            }
        }, options);


    e.keyup(function(){

        clearTimeout(this.timeout);
        this.timeout = setTimeout(function(){

            var smsType,
                smsLength = 0,
                smsCount = -1,
                charsLeft = 0,
                text = e.val(),
                isUnicode = false;

            for(var charPos = 0; charPos < text.length; charPos++){
                switch(text[charPos]){
                    case "\n": case "[": case "]": case "\\": case "^": case "{": case "}": case "|": case "€":
                        smsLength += 2;
                    break;

                    default:
                        smsLength += 1;
                }

                if(text.charCodeAt(charPos) > 127 && text[charPos] != "€")
                    isUnicode = true;
            }

            for(var sCount = 0; sCount < s.maxSmsNum; sCount++){

                smsType = s.calculateSmsMaxLength(isUnicode, sCount);
                cutStrLength = smsType;
                if(smsLength <= smsType){

                    smsCount = sCount + 1;
                    charsLeft = smsType - smsLength;
                    break
                }
            }

            if(s.cut) e.val(text.substring(0, cutStrLength));
            smsCount == -1 && (smsCount = s.maxSmsNum, charsLeft = 0);

            s.counters.message.html(smsCount);
            s.counters.character.html(charsLeft);

        }, s.interval)
    }).keyup();

}}(jQuery));


//Start
$(function(){
    $('#smsText').smsArea({maxSmsNum:5});
})

只需更改＆＃34; maxSmsNum＆＃34;值以设置您要允许的最大sms。有关信息，理论上最大值为255，但实际上，通过发送它通常最多为6到8个sms。

短信字符数

1 个答案: