el-select 自动清除搜索词

在el-select中，当点击关闭下拉框时，搜索词会自动清除。这是由于在el-select的filterable属性设置为true时，它会对搜索词进行过滤。当我们在el-select中输入搜索词并找到匹配的选项后，如果关闭下拉框，el-select会自动清除搜索词。这样可以确保在下次打开下拉框时，搜索词不会保留。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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