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IsRequired

检查当前表单是否为必填项。

继承自 ApiFormBase.IsRequired。

语法​

expression.IsRequired();

expression - 表示 ApiDateForm 类的变量。

参数​

此方法没有任何参数。

返回值​

boolean

示例​

检查文档中的日期表单是否被标记为必填。

// How do I determine if a date form must be filled out in a document?

// Confirm that a required date form reports its mandatory status correctly in a document.

let doc = Api.GetDocument();
let dateForm = Api.CreateDateForm({"key": "Nowadays", "tip": "Enter current date", "required": true, "placeholder": "Your date here", "format": "mm.dd.yyyy", "lang": "en-US"});
let paragraph = doc.GetElement(0);
paragraph.AddElement(dateForm);
let required = dateForm.IsRequired();
paragraph = Api.CreateParagraph();
paragraph.AddText("The first form from this document is required: " + required);
doc.Push(paragraph);