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javascript在线编码查询工具

时间：2021-07-01 10:21:17 帮助过：2人阅读

<script type="text/javascript">// <![CDATA[ 
var begin = parseInt('4e00',16); 
var end = parseInt('9fa5',16); 
//alert(end.toString(16)); 
//alert(begin-end); 
function getObj(id) { 
return document.getElementById(id); 
} 
function showCharList(begin, end) { 
getObj('txtBegin').value = begin; 
getObj('txtEnd').value = end; 
btnQuery_onclick(); 
} 
function btnQuery_onclick() { 
var begin = parseInt(getObj('txtBegin').value); 
var end = parseInt(getObj('txtEnd').value); 
if (isNaN(begin) || isNaN(end) || end < begin) { 
alert('数字输入错误！请检查！'); 
return; 
} 
getObj('spanFontSize').style.display = 'none'; 
getObj('spanLoading').style.display = 'inline'; 
var str = ''; 
for (var i = begin; i <= end; i++) { 
str += String.fromCharCode(i); 
} 
getObj('txtCharContent').value = str; 
getObj('spanLoading').style.display = 'none'; 
getObj('spanFontSize').style.display = 'inline'; 
getObj('spanNum').innerHTML = str.length; 
} 
function showNum16() { 
var num = parseInt(document.getElementById('txt10a').value); 
document.getElementById('txt16a').value = num.toString(16); 
} 
function showNum10() { 
var num = parseInt(document.getElementById('txt16b').value, 16); 
document.getElementById('txt10b').value = num.toString(10); 
} 
function showChar() { 
var num = parseInt(document.getElementById('txtNum1').value); 
if (isNaN(num)) { 
document.getElementById('txtChar1').value = ''; 
} 
else { 
document.getElementById('txtChar1').value = String.fromCharCode(num); 
} 
} 
function showCharNum() { 
var str = document.getElementById('txtChar2').value; 
var txtNum2 = document.getElementById('txtNum2'); 
txtNum2.value = ''; 
for (var i = 0; i < str.length; i++) { 
txtNum2.value += str.charCodeAt(i) + ';'; 
} 
} 
function setTextFontSize(o, fontSize) { 
getObj('txtCharContent').style.fontSize = fontSize + 'px'; 
getObj('aFontSmall').style.color = 'gray'; 
getObj('aFontMiddle').style.color = 'gray'; 
getObj('aFontBig').style.color = 'gray'; 
o.style.color = 'blue'; 
} 
// ]]></script> 
<h4>进制转换</h4> 
<p> 
10进制<input id="txt10a" onkeyup="showNum16();" type="text" /> > 16进制<input id="txt16a" type="text" /><br> 
16进制<input id="txt16b" onkeyup="showNum10();" type="text" /> > 10进制<input id="txt10b" type="text" /></p> 
<h4>编码转换</h4> 
<p> 
数字<input id="txtNum1" onkeyup="showChar();" type="text" value="22221" /> > 字符<input id="txtChar1" type="text" value="囍" /><br> 
字符<input id="txtChar2" onkeyup="showCharNum();" type="text" /> > 数字<input id="txtNum2" type="text" /></p> 
 
HTML中可使用 
<strong style="color: blue;">&#22221;</strong> 表示 
<strong style="color: blue;">囍</strong> 
 
<h4>字符编码表</h4> 
<table style="border-collapse: collapse;" border="2" cellpadding="4"> 
<tbody> 
<tr> 
<th>名称</th> 
<th>范围</th> 
<th>数量</th> 
<th>查看</th> 
</tr> 
<tr> 
<td>汉字</td> 
<td>19968~40869</td> 
<td>20902</td> 
<td>查看</td> 
</tr> 
<tr> 
<td>常用符号、数字、字符</td> 
<td>33~126</td> 
<td>94</td> 
<td>查看</td> 
</tr> 
<tr> 
<td>数字</td> 
<td>48~57</td> 
<td>10</td> 
<td>查看</td> 
</tr> 
<tr> 
<td>大写字母</td> 
<td>65~90</td> 
<td>26</td> 
<td>查看</td> 
</tr> 
<tr> 
<td>小写字母</td> 
<td>97~122</td> 
<td>26</td> 
<td>查看</td> 
</tr> 
<tr> 
<td colspan="4">更多参考资料：编码表</td> 
</tr> 
</tbody> 
</table> 
 
字符：<input id="txtBegin" type="text" /> ~ <input id="txtEnd" type="text" /> <input id="btnQuery" onclick="btnQuery_onclick();" type="button" value="查 询" /> 
<span id="spanFontSize" style="display: none;"> 
小字 
中字 
大字 
共<span id="spanNum">0</span>个 
</span> 
<span id="spanLoading" style="display: none; color: red;">加载中...</span> 
 
<p> 
<textarea id="txtCharContent" style="width: 600px; height: 300px; font-size: 30px;"></textarea></p>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

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