效果
封装思路
- 通过控制
el-tooltip的disabled属性控制是否提示 - 通过在内容上绑定
mouseenter事件监听内容宽度和可视宽度，判断内容是否溢出
封装代码
<template>
<div style="display: flex" class="column-overflow">
<el-tooltip :content="content" placement="top" :disabled="!isShowTooltip">
<div
class="column-overflow__hidden"
@mouseenter="visibilityChange($event)"
>
{{ content || '--' }}
</div>
</el-tooltip>
</div>
</template>
<script>
export default {
props: {
content: {
type: String,
default: ''
},
direction: {
type: String,
default: 'horizontal'
}
},
data() {
return {
isShowTooltip: false
};
},
methods: {
visibilityChange(event) {
const ev = event.target;
let ev_size = ev.scrollWidth;
let content_size = ev.clientWidth;
if (this.direction === 'vertical') {
ev_size = ev.scrollHeight;
content_size = ev.clientHeight;
}
if (ev_size > content_size) {
this.isShowTooltip = true;
} else {
this.isShowTooltip = false;
}
}
}
};
</script>
<style lang="less">
.column-overflow {
width: 100%;
&__hidden {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
}
</style>
使用代码
<column-overflowa
:content="contentInfo"
></column-overflow>
