
这篇文章主要介绍了解决iview多表头动态更改列元素发生的错误的方法,具有一定借鉴价值,感兴趣的朋友可以参考下,希望大家阅读完这篇文章之后大有收获,下面让小编带着大家一起了解一下。
解决iview 'You may have an infinite update loop in watcher with expression "columns"'
解决方案
单表头是可以动态变化不需要增添什么东西

多表头目前iview尚不能动态变化,会报错You may have an infinite update loop in watcher with expression "columns"解决方法是github大神提供的:需要修改iview.js源码

将iview.js中
columns: {
handler: function handler() {
var colsWithId = this.makeColumnsId(this.columns);
his.allColumns = (0, _util.getAllColumns)(colsWithId);
this.cloneColumns = this.makeColumns(colsWithId);
this.columnRows = this.makeColumnRows(false, colsWithId);
this.leftFixedColumnRows = this.makeColumnRows('left', colsWithId);
this.rightFixedColumnRows = this.makeColumnRows('right', colsWithId);
this.rebuildData = this.makeDataWithSortAndFilter();
this.handleResize();
},
deep: true
},修改为
columns: {
handler: function handler() {
//[Fix Bug]You may have an infinite update loop in watcher with expression "columns"
var tempClonedColumns = (0, _assist.deepCopy)(this.columns);
var colsWithId = this.makeColumnsId(tempClonedColumns);
//[Fix Bug End]
this.allColumns = (0, _util.getAllColumns)(colsWithId);
this.cloneColumns = this.makeColumns(colsWithId);
this.columnRows = this.makeColumnRows(false, colsWithId);
this.leftFixedColumnRows = this.makeColumnRows('left', colsWithId);
this.rightFixedColumnRows = this.makeColumnRows('right', colsWithId);
this.rebuildData = this.makeDataWithSortAndFilter();
this.handleResize();
},
deep: true
},demo
单表头:多表头:
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