let arr = [1,2,3,4,5];
if(new Set(arr).size !== arr.length){
alert(存在相同的元素);
}
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| <ul class="drag-menu-container">
<Draggable>
<li class="drag-rootMenu" v-for="(item, index) in buttonData" :key="index">
<div class="menu-header">
<span class="header-left">
<Icon type="md-menu" class="menuItem-icon"/>
<Input type="text" class="menuItem-title" :value="item.children ? item.group_name: item.button_string" :disabled="readonly" />
<Icon type="ios-arrow-down" class="menuItem-icon" v-show="item.children"/>
</span>
<span class="header-right">
<Icon type="md-add" class="menuItem-icon" v-show="readonly" />
<Icon type="ios-create-outline" class="menuItem-icon" @click="handleEdit" v-show="readonly"/>
<Icon type="ios-trash-outline" class="menuItem-icon" v-show="readonly"/>
<Icon type="md-checkmark" class="menuItem-icon" v-show="!readonly" @click="save" />
<Icon type="md-close" class="menuItem-icon" v-show="!readonly"/>
</span>
</div>
<template v-if="item.children && item.children.length > 0">
<ul class="drag-subMenu">
<Draggable>
<li v-for="(child, index) in item.children" :key="index">
<div class="menu-header">
<span class="header-left">
<Icon type="md-menu" class="menuItem-icon"/>
<span class="menuItem-title">{{child.button_string}}</span>
</span>
<span class="header-right">
<Icon type="md-add" class="menuItem-icon"/>
<Icon type="ios-create-outline" class="menuItem-icon"/>
<Icon type="ios-trash-outline" class="menuItem-icon"/>
</span>
</div>
</li>
</Draggable>
</ul>
</template>
</li>
</Draggable>
</ul>
|
2020-04-20
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