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<docs>
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---
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order: 24
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title:
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zh-CN: 最多显示多少个选项及选项最大长度
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en-US: set maxTagCount or maxTagTextLength
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---
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## zh-CN
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设置一个数字，超过后自动折叠。
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maxTagCount 也可以设置成响应式，但响应式对性能有所消耗，不推荐在大表单场景下使用。
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## en-US
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Set a number and automatically fold after exceeding.
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`maxTagCount` can also be set to responsive, but responsive consumes performance and is not recommended for use in large-form scenarios.
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</docs>
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<template>
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<a-space direction="vertical" style="width: 100%">
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<a-space>
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<a-button type="primary" @click="maxTagCount++">maxTagCount++</a-button>
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<a-button type="primary" @click="maxTagCount--">maxTagCount--</a-button>
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</a-space>
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<h2>maxTagCount: {{ maxTagCount }}</h2>
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<a-select
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v-model:value="value"
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mode="multiple"
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style="width: 100%"
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placeholder="Select Item..."
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:max-tag-count="maxTagCount"
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:options="options"
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></a-select>
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<h2>maxTagCount: responsive</h2>
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<a-select
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v-model:value="value"
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mode="multiple"
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style="width: 100%"
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placeholder="Select Item..."
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max-tag-count="responsive"
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:options="options"
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></a-select>
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<a-space>
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<a-button type="primary" @click="maxTagTextLength++">maxTagTextLength++</a-button>
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<a-button type="primary" @click="maxTagTextLength--">maxTagTextLength--</a-button>
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</a-space>
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<h2>maxTagTextLength: {{ maxTagTextLength }}</h2>
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<a-select
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v-model:value="value"
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mode="multiple"
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style="width: 100%"
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placeholder="Select Item..."
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:max-tag-text-length="maxTagTextLength"
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:options="options"
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></a-select>
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</a-space>
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</template>
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<script lang="ts">
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import type { SelectProps } from 'ant-design-vue';
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import { defineComponent, ref } from 'vue';
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export default defineComponent({
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setup() {
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const options = ref<SelectProps['options']>([]);
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for (let i = 10; i < 36; i++) {
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const value = i.toString(36) + i;
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options.value.push({
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label: `Long Label: ${value}`,
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value,
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});
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}
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const maxTagCount = ref(2);
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const maxTagTextLength = ref(10);
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return {
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value: ref(['a10', 'c12', 'h17', 'j19', 'k20']),
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options,
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maxTagCount,
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maxTagTextLength,
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};
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},
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});
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</script>
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