ant-design-vue/components/input/demo/tooltip.vue

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2021-09-01 07:04:46 +00:00
<docs>
---
order: 9
title:
zh-CN: 输入时格式化展示
en-US: Format Tooltip Input
---
## zh-CN
结合 [Tooltip](/components/tooltip-cn/) 便
## en-US
You can use the Input in conjunction with [Tooltip](/components/tooltip/) component to create a Numeric Input, which can provide a good experience for extra-long content display.
</docs>
<template>
<a-tooltip :trigger="['focus']" placement="topLeft" overlay-class-name="numeric-input">
<template v-if="inputValue" #title>
<span class="numeric-input-title">
{{ formatValue }}
</span>
</template>
<a-input
v-model:value="inputValue"
placeholder="Input a number"
:max-length="25"
style="width: 120px"
@blur="onBlur"
/>
</a-tooltip>
</template>
<script lang="ts">
import { computed, defineComponent, ref, watch } from 'vue';
function formatNumber(value: string) {
value += '';
const list = value.split('.');
const prefix = list[0].charAt(0) === '-' ? '-' : '';
let num = prefix ? list[0].slice(1) : list[0];
let result = '';
while (num.length > 3) {
result = `,${num.slice(-3)}${result}`;
num = num.slice(0, num.length - 3);
}
if (num) {
result = num + result;
}
return `${prefix}${result}${list[1] ? `.${list[1]}` : ''}`;
}
export default defineComponent({
setup() {
const inputValue = ref<string>('111');
const formatValue = computed(() => {
if (inputValue.value === '-') return '-';
return formatNumber(inputValue.value);
});
const format = (val: string, preVal: string) => {
const reg = /^-?\d*(\.\d*)?$/;
if ((!isNaN(+val) && reg.test(val)) || val === '' || val === '-') {
inputValue.value = val;
} else {
inputValue.value = preVal;
}
};
// '.' at the end or only '-' in the input box.
const onBlur = () => {
if (
inputValue.value.charAt(inputValue.value.length - 1) === '.' ||
inputValue.value === '-'
) {
format(inputValue.value.slice(0, -1), inputValue.value);
}
};
watch(inputValue, (val, preVal) => {
format(val, preVal);
});
return {
inputValue,
onBlur,
formatValue,
};
},
});
</script>
<style>
/* to prevent the arrow overflow the popup container,
or the height is not enough when content is empty */
.numeric-input .ant-tooltip-inner {
min-width: 32px;
min-height: 37px;
}
.numeric-input .numeric-input-title {
font-size: 14px;
}
</style>