如何使用 Array includes() 方法检查数组中是否存在值？

Question

I have the following code which get all the data in kendo grid column Type . how can I check if array contain Type ='Custom Document' ?

I tried the following

function chkCustomDocumentIncluded() {
    var messageText = '';

    var arrayType = [];
    var data = $("#CustomDocumentsGrid").data("kendoGrid").dataSource._data;
    for (i = 0; i < data.length; i++) {
        arrayType.push(data[i].Type);          
    }       
    if (arrayType.includes("Custom SBA")) {
        messageText = '@Localizer["Custom document is required"].Value';
    }

    return messageText;
}

console.log(arrayType) returns expected value but how can i add a condition to check the value exist?

Answer 1

Use the Array.every method to check if every element of the array meets a condition.

function chkCustomDocumentIncluded() {
    var data = $("#CustomDocumentsGrid").data("kendoGrid").dataSource._data;
    if (!data || data.every(d => d.Type == "Custom SBA")) {
        return '@Localizer["Custom document is required"].Value';
    } else {
        return '';
    }
}