<p><style>.btn {    font-family: "tahoma", "宋体";    font-size:12pt; color: #003399;    border: 1px #003399 solid;    color:#006699;    border-bottom: #93bee2 1px solid;    border-left: #93bee2 1px solid;    border-right: #93bee2 1px solid;    border-top: #93bee2 1px solid;    background-color: #e8f4ff;    cursor: hand;    font-style: normal ;    width:auto;    height:40px;    float:left;}.txt {    font-family: "tahoma", "宋体";    font-size:16pt; color: #003399;    border: 1px #003399 solid;    color:#006699;    border-bottom: #93bee2 1px solid;    border-left: #93bee2 1px solid;    border-right: #93bee2 1px solid;    border-top: #93bee2 1px solid;    text-align: center;    cursor: hand;    font-style: normal ;    width:auto;    height:36px;    float:left;}</style><input id="1" class="txt" type="text" /> <button class="btn" onclick="i2a()" type="button">数字转字符</button> <input id="2" class="txt" type="text" /><br /><br /><br /><input id="3" class="txt" type="text" /> <button class="btn" onclick="a2i()" type="button">字符转数字</button> <input id="4" class="txt" type="text" /><script>function i2a(){    //1919707494    //726c6966    //0x72 0x6c 0x69 ox66    //r l i f    var txt1 = document.getElementById("1")    var txt2 = document.getElementById("2")    txt2.value =null    var dif = new Array(0)    var x = (parseInt(txt1.value)).toString(16)        for(var i=0;i<x.length;i+=2)    {        dif.push(parseInt(x.slice(i,i+2),16))    }    for (var i=0;i<dif.length;i++)    {        //        txt2.value += String.fromCharCode(dif[i]);    }    //console.log(dif)}function a2i(){    //r l i f    //0x72 0x6c 0x69 ox66    //726c6966    //1919707494    var txt3 = document.getElementById("3")    var txt4 = document.getElementById("4")    txt4.value=null    var dif = new Array(0)    var x = txt3.value    var y =""    for(var i=0;i<x.length;i++)    {        //        dif.push((x[i].charCodeAt()).toString(16))    }        for(var i=0;i<dif.length;i++)    {        //        y += dif[i]    }    txt4.value = parseInt(y,16)}</script><br /><br /><br /></p>