简易计算机

今天药忘吃喽~ 2022-09-14 09:48 113阅读 0赞

**HTML：**

<div>
            <p>输入一个数：<input type="text"></p>
            <p>选择运算符：<select name="" id="">
                    <option value="+">+</option>
                    <option value="-">-</option>
                    <option value="*">*</option>
                    <option value="/">/</option>
                </select></p>
            <p>输入一个数：<input type="text"></p>
            <p>运算的结果：<input type="text"></p>
            <button>计算</button>
        </div>

**JavaScript：**

**效果： **

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_19_color_FFFFFF_t_70_g_se_x_16][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16 2][]

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16 3][]

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220828/40e10e10acd34008915bb54638bf7e28.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_19_color_FFFFFF_t_70_g_se_x_16]: /images/20220828/d3b8f5bc76cb47bd977e1c1f6d9f84a2.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16 1]: /images/20220828/4a8ddd2b87c64b11b715bfce97149d65.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16 2]: /images/20220828/eb5b926686a749889a21285037086341.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBA5pif5bG_SA_size_20_color_FFFFFF_t_70_g_se_x_16 3]: /images/20220828/3a94d8290e1c4bb6812c605cdc6c454f.png