移动端开发:实现input数字语音播报,还可以这样扩展简直了

手机APP/开发
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2022-06-04
标签   HTML5

网页移动端H5开发中,我们时常遇到输入手机号码的场景,这里以手机号码(数字)语音播放为切入点,供大家学习。

移动端开发:实现input数字语音播报,还可以这样扩展简直了

你往下看的是Javascript技术教程

实现思路:

  1. 语音对象,用于语音播放,可实现按url插入顺序播放,实现未播放url删除不读。
  2. input数字控制对象,用于控制输入内容。

支持:

  1. 中英文数字语音播放,默认使用百度翻译语音程序。
  2. 支持自定义数字语音路径。
  3. 方便控制混合app开发时,语音路径置换为app本地路径,减少网络请求,提高读取速度。
  4. 原生和jQuery两种方式实现。

代码部分:

<!DOCTYPE>
<html>
<head> 
    <title> New Document </title> 
    <meta charset="utf-8"> 
    <meta name="Generator" content="EditPlus"> 
    <meta name="Author" content=""> 
    <meta name="Keywords" content=""> 
    <meta name="Description" content=""> 
    <meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1"> 
    <meta name=”viewport” content=”width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;” />
</head>
<script type="text/javascript" src="http://www.linuxidc.com/inc/jquery.js"></script>
<script src="http://api.html5media.info/1.1.6/html5media.min.js"></script>
<script src="http://vjs.zencdn.net/ie8/1.1.2/videojs-ie8.min.js"></script>
<script type="text/javascript">
    <!--
    var SpeechVideo = function(){
        this.urls = [];
        this.canload = true;
        this.setInterval = null;
        this.audio = null;
    };
    SpeechVideo.prototype.__load = function(){
        var me = this;
        if(this.canload == false){ return; }
        var url = this.urls.shift();
        if(url == null && this.setInterval != null){ clearInterval(this.setInterval); this.setInterval = null; return; }else{ this.play(url); }
        if(this.setInterval == null){
            this.setInterval = setInterval(function(){
                me.__load();
            },10);
        }
    }
    SpeechVideo.prototype.play = function(url){
        this.canload = false;
        if(this.audio == null){
            if(typeof Audio != 'undefined'){ this.audio = new Audio(); }else{
                //兼容IE9- 
                if(typeof $ !== 'undefined'){
                    var $audio = $('<audio src="'+ url +'" controls preload></audio>').hide();
                    $audio.appendTo(document.body);
                    this.audio = $audio[0];
                }else{
                    var audio = document.createElement('audio');
                    audio.style.display="none";
                    document.body.appendChild(audio);
                    this.audio = audio;
                }
            }
        }
        if(typeof Audio != 'undefined'){
            var audio = this.audio,me = this;
            audio.src = url;
            if(window.attachEvent){
                audio.onloadstart = function(){ me.canload = false;};
                audio.onended = function() { me.canload = true; };
                audio.onerror = function() { me.canload = true; };
            }else{
                audio.addEventListener('loadstart',function(){ me.canload = false;});
                audio.addEventListener('ended',function() { audio.currentTime = 0; me.canload = true; });
                audio.addEventListener('error',function() { audio.currentTime = 0; me.canload = true; });
            }
            audio.play();
        }else{
            //兼容IE9-【暂时没找到合适的方法,以网易云音乐为例的话,估计有眉目】
        }
    }
    SpeechVideo.prototype.next = function(url){
        this.urls.push(url);
        this.__load();
    };
    SpeechVideo.prototype.remove = function(ele){
        if(typeof ele == 'undefined'){ this.urls.pop(); }else 
        if(typeof ele == 'number'){
            if(ele > this.urls.length - 1){ ele = this.urls.length - 1; }
            this.urls.splice(ele,1);
        }else{
            var index = -1;
            for (var i = 0; i < this.urls.length; i++) {
                if (this.urls[i] == ele) return index = i;
            }
            if(index > -1){ this.urls.splice(index,1); }
        }
    }
    var NumberSpeech = function(cfg){
        var dfCfg = {
            input : null, reg : null ,
            srcsMap : { //英文发音 
                '1' : 'http://fanyi.baidu.com/gettts?lan=en&text=One&spd=3&source=web',
                '2' : 'http://fanyi.baidu.com/gettts?lan=en&text=Two&spd=3&source=web',
                '3' : 'http://fanyi.baidu.com/gettts?lan=en&text=Three&spd=3&source=web',
                '4' : 'http://fanyi.baidu.com/gettts?lan=en&text=Four&spd=3&source=web',
                '5' : 'http://fanyi.baidu.com/gettts?lan=en&text=Five&spd=3&source=web',
                '6' : 'http://fanyi.baidu.com/gettts?lan=en&text=Six&spd=3&source=web',
                '7' : 'http://fanyi.baidu.com/gettts?lan=en&text=Seven&spd=3&source=web',
                '8' : 'http://fanyi.baidu.com/gettts?lan=en&text=Eight&spd=3&source=web',
                '9' : 'http://fanyi.baidu.com/gettts?lan=en&text=Nine&spd=3&source=web',
                '0' : 'http://fanyi.baidu.com/gettts?lan=en&text=Zero&spd=3&source=web'
            }//输入容器【支持ID 和 jquery对象两种形式】 , 输入规则 , 发音资源
        };
        var type = navigator.appName,lang = (type == "Netscape" ? navigator.language : navigator.userLanguage).substr(0, 2);
        if (lang == "zh"){
            dfCfg.srcsMap = { //中文发音 
                '1' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E4%B8%80&spd=5&source=web',
                '2' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E4%BA%8C&spd=5&source=web',
                '3' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E4%B8%89&spd=5&source=web',
                '4' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E5%9B%9B&spd=5&source=web',
                '5' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E4%BA%94&spd=5&source=web',
                '6' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E5%85%AD&spd=5&source=web',
                '7' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E4%B8%83&spd=5&source=web',
                '8' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E5%85%AB&spd=5&source=web',
                '9' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E4%B9%9D&spd=5&source=web',
                '0' : 'http://fanyi.baidu.com/gettts?lan=zh&text=%E9%9B%B6&spd=5&source=web',
            };
        }
        if(typeof $ !== 'undefined'){
            dfCfg = $.extend(true, dfCfg, cfg || {});
        }else{
            //浅层次copy 
            var srcs = cfg.srcsMap || {};
            delete cfg.srcsMap;
            for(var key in (cfg || {})){ dfCfg[key] = cfg[key]; }
            for(var key in srcs){
                dfCfg.srcsMap[key] = srcs[key];
            }
        }
        if(dfCfg.input == null){ throw '请指定当前容器'; }
        var $input = dfCfg.input,speechVideo = new SpeechVideo(),oldLength = 0,isIE = typeof window.attachEvent !== 'undefined';
        if(typeof $ !== 'undefined'){ //TODO !== 为测试原生方式暂设置 == 
            if(typeof dfCfg.input == 'string'){ $input = $('#'+dfCfg.input);}
            $input.bind('keydown',function(event){
                if(event.keyCode == 8 && isIE){
                    //var curValue = $(this).val(); 
                    //var len = oldLength - curValue.length; 
                    //for(var i=0;i<len;i++){
                    speechVideo.remove(); oldLength--; if(oldLength < 0){ oldLength = 0;}
                    //}
                }
            });
            $input.bind("input propertychange change",function(){
                var curValue = $(this).val();
                if(oldLength > curValue.length){ speechVideo.remove(); }else{
                    var last = curValue.substring(curValue.length - 1);
                    if(dfCfg.srcsMap[last]){
                        speechVideo.next(dfCfg.srcsMap[last]);
                    }
                }
                oldLength = curValue.length;
            });
        }else{
            var inputObj = document.getElementById(dfCfg.input),objEvent;
            oldLength = inputObj.value.length;
            inputObj.onkeypress = function(event){
                var keyCode = event.keyCode;
                event.returnValue = (keyCode >= 48 && keyCode <= 57);
            };
            inputObj.onkeydown = function(event){
                if(event.keyCode == 8 && isIE){ speechVideo.remove(); oldLength--; if(oldLength < 0){ oldLength = 0;}}
            }
            objEvent = function(event){
                var curValue = '';
                if (typeof event.srcElement != 'undefined' && event.propertyName == "value") {
                    curValue = event.srcElement.value;
                }else if(typeof event.target != 'undefined'){ curValue = event.target.value; }
                if(oldLength > curValue.length){ speechVideo.remove(); }else{
                    var last = curValue.substring(curValue.length - 1);
                    if(dfCfg.srcsMap[last]){
                        speechVideo.next(dfCfg.srcsMap[last]);
                    }
                }
                oldLength = curValue.length;
            }
            //input.onpropertychange = input.oninput = input.onchange 
            if(isIE){ inputObj.onpropertychange = objEvent; }else{ inputObj.oninput = objEvent; }
        }
    }
    window.onload = function(){
        new NumberSpeech({
            input : 'numberspeech'
        });
    }
    //-->
</script>
<body>
<input type="text" id="numberspeech"/>
</body>
</html>

未尽事项:

IE9- 的支持,使用audio.js 不过这里不深究,毕竟应用场景在APP端,跟微软IE关系没多大。这里demo已引用支持,可自行实现。若应用于PC端,多选移除时,内部oldValue计算方式不合理,这暂不在考虑范围内,可自行优化,难度不大~

思路扩展:

利用百度语音(以“

http://fanyi.baidu.com/gettts?lan=zh&text=%E4%BA%94&spd=5&source=web”为例,text对应的值,即为语音内容),实现语音播放时很轻松的。

附注: 该文原发自我个人技术博客,今后会逐步迁移到今日头条,以期形成系列教程,还原订阅关注,技术无止境,但愿一路有你。

移动端开发:实现input数字语音播报,还可以这样扩展简直了

你没看错,老皇叔是个程序猿