What is the code for Vue to implement the shuttle box function?
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Vue-implements the shuttle box function, as shown in the following figure:
Css
.transfer {display: flex; justify-content: center; align-items: center;} .transfer > .list {width: 200px; height: 300px; border: 1px solid # 000; list-style: none;} .content {font-size: 30px; margin: 020px;} .list > li {padding: 5px; box-sizing: border-box;}
HTML
{{item.name}} >
{/ / execute the data whose select is true if (item.select) {that.info = that.info.concat (item). Sort ((return a.id b) = > {return a.id-b.id}); / / add to the new data box, sort delete info [index]; / / delete the data item.select = false }}) info = info.filter (function (val) {return val}); / / filter undefined that.new_info = info; / / update the original data},}, mounted () {let that = this / / add a select field to the original data to determine whether to select that.info.map ((val,key) = > {that.$set (val,'select',false)});}
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There is a problem using splice to delete data here this.info.splice (index,1); when multiple elements are selected, you will find that only some of the elements have been deleted, while some of the selected elements still exist because of the change in the index of the array when an element is deleted, resulting in a program exception. So I use delete to clear the data, and then filter to filter the undefined. The general idea is to add a select field to the data, bind it with the checked of multi-checkboxes, and when the field is click, only execute the data whose select is true, add it to the new data box, and then delete the original one.
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