ClearContent

清除当前文本块中的内容。

语法

expression.ClearContent();

expression - 表示 ApiRun 类（文本块）的变量。

参数

此方法没有任何参数。

返回值

boolean

示例

从 PDF 中的文本元素删除所有文本。

// How do I remove text from a text run in a PDF?

// Erase content from text in a PDF.

const doc = Api.GetDocument();
const page = doc.GetPage(0);

const fill = Api.CreateSolidFill(Api.RGB(255, 111, 61));
const stroke = Api.CreateStroke(0, Api.CreateNoFill());
const shape = Api.CreateShape("flowChartMagneticTape", 150 * 36000, 65 * 36000, fill, stroke);
shape.SetPosition(608400, 1267200);

const docContent = shape.GetContent();
let paragraph = docContent.GetElement(0);
let run = Api.CreateRun();
run.SetFontSize(30);
run.AddText("This is just a sample text. ");
run.AddText("But you will not see it in the resulting document, as it will be cleared.");
paragraph.AddElement(run);
run.ClearContent();

paragraph = Api.CreateParagraph();
run = Api.CreateRun();
run.AddText("The text in the previous paragraph cannot be seen, as it has been cleared.");
paragraph.AddElement(run);
docContent.Push(paragraph);
page.AddObject(shape);