此条件将始终返回"false"，因为类型"SingleDataSet"和"number"没有重叠 ng2chart [角度]

Question

大家好，我正在检查数组是否包含0如果它有0那么我想在0

的位置添加空格

public atDestinationDoughnutChartData: MultiDataSet = [];
for (let i = 0; i < this.atDestinationDoughnutChartData.length; ++i) {
if (this.atDestinationDoughnutChartData[i] == 0 ) {
this.atDestinationDoughnutChartData.push(this.atDestinationDoughnutChartData[i]);
}}

，但我得到的错误条件将永远假如下图所示，请帮助我解决它

截图

Answer 1

数据类型不匹配错误。您正在比较类型MultiDataSet类型number． 因此，一个简单的解决方案是put!在this.atDestinationDoughnutChartData[i]之前。!this.atDestinationDoughnutChartData[i]等于this.atDestinationDoughnutChartData[i] == 0。代码:

public atDestinationDoughnutChartData: MultiDataSet = [];
for (let i = 0; i < this.atDestinationDoughnutChartData.length; ++i) {
if (!this.atDestinationDoughnutChartData[i]) { this.atDestinationDoughnutChartData.push(this.atDestinationDoughnutChartData[i]);}}