专栏目标
在vue和element UI联合技术栈的操控下,本专栏提供行之有效的源代码示例和信息点介绍,做到灵活运用。
(1)提供vue2的一些基本操作:安装、引用,模板使用,computed,watch,生命周期(beforeCreate,created,beforeMount,mounted, beforeUpdate,updated, beforeDestroy,destroyed,activated,deactivated,errorCaptured,components,)、 $root , $parent , $children , $slots , $refs , props, $emit , eventbus ,provide / inject, Vue.observable, $listeners, $attrs, $nextTick , v-for, v-if, v-else,v-else-if,v-on,v-pre,v-cloak,v-once,v-model, v-html, v-text, keep-alive,slot-scope, filters, v-bind,.stop, .native, directives,mixin,render,国际化,Vue Router等
(2)提供element UI的经典操作:安装,引用,国际化,el-row,el-col,el-button,el-link,el-radio,el-checkbox ,el-input,el-select, el-cascader, el-input-number, el-switch,el-slider, el-time-picker, el-date-picker, el-upload, el-rate, el-color-picker, el-transfer, el-form, el-table, el-tree, el-pagination,el-badge,el-avatar,el-skeleton, el-empty, el-descriptions, el-result, el-statistic, el-alert, v-loading, $message, $alert, $prompt, $confirm , $notify, el-breadcrumb, el-page-header,el-tabs ,el-dropdown,el-steps,el-dialog, el-tooltip, el-popover, el-popconfirm, el-card, el-carousel, el-collapse, el-timeline, el-divider, el-calendar, el-image, el-backtop,v-infinite-scroll, el-drawer等
vue在使用element UI tree的时候,有的时候是要做逆向处理的,即将树形结构的数据转化为table结构的数据,即扁平化的json数据。 如何处理呢?文章来源:https://www.toymoban.com/news/detail-522463.html
效果图
文章来源地址https://www.toymoban.com/news/detail-522463.html
原始tree结构数据:
let newdata= [
{
id: 13,
name: "truck",
order: 1,
parentId: 0,
children: [
{ id: 18, name: "dddd", order: 1, parentId: 13, children: [] }
]
},
{
id: 16,
name: "sca",
order: 1,
parentId: 0,
children: [
{ id: 17, name: "abcf", order: 1, parentId: 16, children: [] }
]
}
];
改变后的格式为:
newdata = [
{"id":18,"name":"dddd","order":1,"parentId":13},
{"id":13,"name":"truck","order":1,"parentId":0},
{"id":17,"name":"abcf","order":1,"parentId":16},
{"id":16,"name":"sca","order":1,"parentId":0}
]
实现的方法为:
function treeToTable (tree, arr = []){
tree.map((item) => {
// 判断当前itme中是否有children
if (item.children) {
// push添加到arr ...扩展运算符用于取出参数对象中的所有可遍历属性,拷贝到当前对象之中
// treeToTable 函数,利用了迭代,因为我们不知道有多少个children,判断当前数组中对象是否里面有children,有的话继续迭代,直到有没children了,return会返回数组,再用扩展运算符连接起来,再用push添加
arr.push(...treeToTable(item.children));
// delete 排除item.children
delete item.children;
}
arr.push(item);
});
// 返回结果
return arr;
};
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