## DelimiterEquationNode class

This class specifies the delimiter equation, consisting of opening and closing delimiters (such as parentheses, braces, brackets, and vertical bars), and a component contained inside. The delimiter may have more than one component, with a designated separator character between each component.

```javascript
class DelimiterEquationNode extends EquationNode;
```


## Constructors

| Name | Description |
| --- | --- |
| [constructor(EquationNode)](#constructor-equationnode-)| Constructs from a parent object convertible to this. |

## Properties

| Property | Type | Description |
| --- | --- | --- |
| [beginChar](#beginChar--)| string | Delimiter beginning character. |
| [endChar](#endChar--)| string | Delimiter ending character. |
| [naryGrow](#naryGrow--)| boolean | Specifies whether the delimiter should automatically expand and contract with the height of the formula. |
| [separatorChar](#separatorChar--)| string | Delimiter separator character. |
| [delimiterShape](#delimiterShape--)| EquationDelimiterShapeType | Specifies the shape of delimiters in the delimiter object. |
| [startIndex](#startIndex--)| number | Readonly. Gets the start index of the characters. |
| [length](#length--)| number | Readonly. Gets the length of the characters. |
| [font](#font--)| Font | Readonly. Returns the font of this object. |
| [textOptions](#textOptions--)| TextOptions | Readonly. Returns the text options. |
| [parentNode](#parentNode--)| EquationNode | Specifies the parent node of the current node |
| [equationType](#equationType--)| EquationNodeType | Readonly. Get the equation type of the current node |

## Methods

| Method | Description |
| --- | --- |
| [setWordArtStyle(PresetWordArtStyle)](#setWordArtStyle-presetwordartstyle-)| Sets the preset WordArt style. |
| [toLaTeX()](#toLaTeX--)| Convert this equtation to LaTeX expression. |
| [toMathML()](#toMathML--)| Convert this equtation to MathML expression. |
| [addChild(EquationNodeType)](#addChild-equationnodetype-)| Insert a node of the specified type at the end of the child node list of the current node. |
| [addChild(EquationNode)](#addChild-equationnode-)| Inserts the specified node at the end of the current node's list of child nodes. |
| [insertChild(number, EquationNodeType)](#insertChild-number-equationnodetype-)| Inserts a node of the specified type at the specified index position in the current node's child node list. |
| [insertAfter(EquationNodeType)](#insertAfter-equationnodetype-)| Inserts the specified node after the current node. |
| [insertBefore(EquationNodeType)](#insertBefore-equationnodetype-)| Inserts the specified node before the current node. |
| [getChild(number)](#getChild-number-)| Returns the node at the specified index among the children of the current node. |
| [remove()](#remove--)| Removes itself from the parent. |
| [removeChild(EquationNode)](#removeChild-equationnode-)| Removes the specified node from the current node's children. |
| [removeChild(number)](#removeChild-number-)| Removes the node at the specified index from the current node's children. |
| [removeAllChildren()](#removeAllChildren--)| Removes all the child nodes of the current node. |
| static [createNode(EquationNodeType, Workbook, EquationNode)](#createNode-equationnodetype-workbook-equationnode-)| Create a node of the specified type. |
| [equals(VObject)](#equals-vobject-)| Determine whether the current equation node is equal to the specified node |
| [getType()](#getType--)| Represents the type of the node. |


### constructor(EquationNode) {#constructor-equationnode-}

Constructs from a parent object convertible to this.

```javascript
constructor(obj: EquationNode);
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| obj | EquationNode | The parent object. |

### beginChar {#beginChar--}

Delimiter beginning character.

```javascript
beginChar : string;
```


**Remarks**

It should be noted that this property only accepts one character, and if multiple characters are passed in, only the first character is accepted.

### endChar {#endChar--}

Delimiter ending character.

```javascript
endChar : string;
```


**Remarks**

It should be noted that this property only accepts one character, and if multiple characters are passed in, only the first character is accepted.

### naryGrow {#naryGrow--}

Specifies whether the delimiter should automatically expand and contract with the height of the formula.

```javascript
naryGrow : boolean;
```


**Remarks**

This property specifies the growth property of the delimiter at the document level. When off, the delimiter will not grow to match the size of its component height. When enabled, the delimiter grows vertically to match its component height.

### separatorChar {#separatorChar--}

Delimiter separator character.

```javascript
separatorChar : string;
```


**Remarks**

It should be noted that this property only accepts one character, and if multiple characters are passed in, only the first character is accepted.

### delimiterShape {#delimiterShape--}

Specifies the shape of delimiters in the delimiter object.

```javascript
delimiterShape : EquationDelimiterShapeType;
```


### startIndex {#startIndex--}

Readonly. Gets the start index of the characters.

```javascript
startIndex : number;
```


### length {#length--}

Readonly. Gets the length of the characters.

```javascript
length : number;
```


### font {#font--}

Readonly. Returns the font of this object.

```javascript
font : Font;
```


### textOptions {#textOptions--}

Readonly. Returns the text options.

```javascript
textOptions : TextOptions;
```


### parentNode {#parentNode--}

Specifies the parent node of the current node

```javascript
parentNode : EquationNode;
```


### equationType {#equationType--}

Readonly. Get the equation type of the current node

```javascript
equationType : EquationNodeType;
```


### setWordArtStyle(PresetWordArtStyle) {#setWordArtStyle-presetwordartstyle-}

Sets the preset WordArt style.

```javascript
setWordArtStyle(style: PresetWordArtStyle) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| style | [PresetWordArtStyle](../presetwordartstyle/) | The preset WordArt style. |

**Remarks**

Only for the text of shape/chart.

### toLaTeX() {#toLaTeX--}

Convert this equtation to LaTeX expression.

```javascript
toLaTeX() : string;
```


### toMathML() {#toMathML--}

Convert this equtation to MathML expression.

```javascript
toMathML() : string;
```


### addChild(EquationNodeType) {#addChild-equationnodetype-}

Insert a node of the specified type at the end of the child node list of the current node.

```javascript
addChild(equationType: EquationNodeType) : EquationNode;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| equationType | [EquationNodeType](../equationnodetype/) | Types of Equation Nodes |

**Returns**

If the specified type exists, the corresponding node is returned, and if the type does not exist, a node of unknown type is returned.

### addChild(EquationNode) {#addChild-equationnode-}

Inserts the specified node at the end of the current node's list of child nodes.

```javascript
addChild(node: EquationNode) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| node | [EquationNode](../equationnode/) | The specified node |

### insertChild(number, EquationNodeType) {#insertChild-number-equationnodetype-}

Inserts a node of the specified type at the specified index position in the current node's child node list.

```javascript
insertChild(index: number, equationType: EquationNodeType) : EquationNode;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | index value |
| equationType | [EquationNodeType](../equationnodetype/) | Types of Equation Nodes |

**Returns**

If the specified type exists, the corresponding node is returned, and if the type does not exist, a node of unknown type is returned.

### insertAfter(EquationNodeType) {#insertAfter-equationnodetype-}

Inserts the specified node after the current node.

```javascript
insertAfter(equationType: EquationNodeType) : EquationNode;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| equationType | [EquationNodeType](../equationnodetype/) | Types of Equation Nodes |

**Returns**

If the specified type exists, the corresponding node is returned, and if the type does not exist, a node of unknown type is returned.

### insertBefore(EquationNodeType) {#insertBefore-equationnodetype-}

Inserts the specified node before the current node.

```javascript
insertBefore(equationType: EquationNodeType) : EquationNode;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| equationType | [EquationNodeType](../equationnodetype/) | Types of Equation Nodes |

**Returns**

If the specified type exists, the corresponding node is returned, and if the type does not exist, a node of unknown type is returned.

### getChild(number) {#getChild-number-}

Returns the node at the specified index among the children of the current node.

```javascript
getChild(index: number) : EquationNode;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | Index of the node |

**Returns**

Returns the corresponding node if the specified node exists, otherwise returns null.

### remove() {#remove--}

Removes itself from the parent.

```javascript
remove() : void;
```


### removeChild(EquationNode) {#removeChild-equationnode-}

Removes the specified node from the current node's children.

```javascript
removeChild(node: EquationNode) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| node | [EquationNode](../equationnode/) | Node to be deleted. |

### removeChild(number) {#removeChild-number-}

Removes the node at the specified index from the current node's children.

```javascript
removeChild(index: number) : void;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | Index of the node |

### removeAllChildren() {#removeAllChildren--}

Removes all the child nodes of the current node.

```javascript
removeAllChildren() : void;
```


### createNode(EquationNodeType, Workbook, EquationNode) {#createNode-equationnodetype-workbook-equationnode-}

Create a node of the specified type.

```javascript
static createNode(equationType: EquationNodeType, workbook: Workbook, parent: EquationNode) : EquationNode;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| equationType | [EquationNodeType](../equationnodetype/) | Types of Equation Nodes |
| workbook | [Workbook](../workbook/) | The workbook object associated with the equation |
| parent | [EquationNode](../equationnode/) | The parent node where this node is located |

**Returns**

If the specified type exists, the corresponding node is returned, and if the type does not exist, a node of unknown type is returned.

### equals(VObject) {#equals-vobject-}

Determine whether the current equation node is equal to the specified node

```javascript
equals(obj: VObject) : boolean;
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| obj | VObject | The specified node |

### getType() {#getType--}

Represents the type of the node.

```javascript
getType() : TextNodeType;
```


**Returns**

[TextNodeType](../textnodetype/)