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element表头筛选,支持输入模糊匹配

image

需求如上图。
目前用filter-method方法,可以实现筛选,但是不能输入模糊查询,想问下,如何在筛选下拉框里加一个输入模糊匹配?


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filterMethod(query, item) {
    if (query === '') {
        return this.options;
    } else {
        return item.label.toLowerCase().indexOf(query.toLowerCase()) > -1 || item.label.toUpperCase().indexOf(query.toUpperCase()) > -1;
    }
},

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