如何删除& nbsp;用JavaScript这种情况? [英] How to remove   with javascript this case?

问题描述

我有一个问题.

<table id="mytable">
 <tr>
  <td>1</td>
  <td>2</td>
  <td>3</td>
  <td>&nbsp;</td>
  <td>4</td>
 </tr>
 <tr>
  <td>5</td>
  <td>6</td>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
  <td>7</td>
 </tr>
 <tr>
  <td>&nbsp;</td>
  <td>&nbsp;</td>
  <td>8</td>
  <td>9</td>
  <td>10</td>
 </tr>
</table>

这是脚本.

var table = document.getElementById("mytable");
for (var i = 0; i < 3; i++) {
  for (var k = 0; k < 5; k++) {
    var str = table.rows[i].cells[k].innerHTML;
    alert(str);
  }
};

我尝试对此进行编码

alert(str.replace(/( )*/g,''))

，但随后会显示一个空警报框.

but then empty alert box show up.

我想弹出期望值& nb sp;的单元格.和空盒子.

I want to pop up cells value expect &nb sp; and empty box.

显示& nbsp".我不要.

show up '&nbsp'. I don't want it.

出现 "".我不要.

show up "". I don't want it.

我要这个.谢谢你的评论.

I want this. Thank you for comment.

        var str = table.rows[i].cells[k].innerHTML.replace(/[&]nbsp[;]/gi,"");
         if (str.length > 0) {
          alert(str);
        }

推荐答案

使用Regex用空字符串替换 td 的 innerHtml ，并检查字符串的长度.如果长度大于0，请发出警告.

Replace the innerHtml of td with empty string by Regex and check the length of string. If the length is bigger than 0, alert that.

var table = document.getElementById("mytable");
for (var i = 0; i < 3; i++) {
  for (var k = 0; k < 5; k++) {
    var str = table.rows[i].cells[k].innerHTML;
    str = str.replace(/(&nbsp;)*/g, '');
    if (str.length) alert(str);
  }
};

<table id="mytable">
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
    <td>&nbsp;</td>
    <td>4</td>
  </tr>
  <tr>
    <td>5</td>
    <td>6</td>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>7</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td>&nbsp;</td>
    <td>8</td>
    <td>9</td>
    <td>10</td>
  </tr>
</table>

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