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JavaScript运算符，
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JavaScript运算符
JavaScript运算符
JavaScript算术运算符
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">+</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">加法</td>
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">-</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">减法</td>
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">*</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">乘法</td>
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">/</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">除法</td>
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">%</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">取模（余数）</td>
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">++</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">自增</td>
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<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">--</td>
<td style="border-color: #90876f; background-color: #e3e9e1; border-style: solid; border-width: 1px; margin-left: 30px"><span style="font-size: 16px">自减</td>
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运算符
| 例子 |
等同于 |
运算结果 |
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<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">+=</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x += y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = x + y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = 15</td>
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<tr style="margin-left: 90px">
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">-=</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x -= y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = x - y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = 5 </td>
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<tr style="margin-left: 90px">
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">=</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = x * y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = 50</td>
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<tr style="margin-left: 90px">
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">/=</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x /= y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = x / y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = 2</td>
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<tr style="margin-left: 90px">
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">%=</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x %= y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = x % y</td>
<td style="border-color: #7f906e; background-color: #dcd4e2; border-style: solid; border-width: 1px" align="center" valign="middle"><span style="font-size: 16px">x = 0</td>
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增加空格，需要把空格插入一个字符串中：
删除 谢谢。
