In This Topic ▼
LTHelper Class Members
Summary
The following tables list the members exposed by LTHelper.
Public Methods
| Name | Description | |
|---|---|---|
  |
addClass | Adds the specified class string to the HTML or SVG element's current class list. |
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base64Decode | Decodes a Base 64 encoded string and returns the result as a byte array. |
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base64DecodeToArrayBuffer | Decodes a Base 64 encoded string and returns the result as an array buffer. |
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base64DecodeToByteArray | Decodes a Base 64 encoded string and returns the result as a byte array. |
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base64Encode | Encodes a byte array as Base 64 and returns the result. |
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base64EncodeFromArrayBuffer | Encodes an array buffer as Base 64 and returns the result. |
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cancelAnimationFrame | Cancels an animation frame, with a fallback for older browsers. |
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ensureUsableCanvas | Helper method to ensure that a canvas of a given size is usable. |
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hasClass | Checks an HTML or SVG element for the given class string. |
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loadJS | Helper method to dynamically load a JS file and add it to the script section of the current document. |
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log | Logs messages to the console without causing errors on older browsers. |
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logError | Logs errors to the console without causing errors on older browsers. |
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logWarning | Logs warnings to the console without causing errors on older browsers. |
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newGuid | Creates a new GUID. |
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removeClass | Removes the specified class string from the HTML or SVG element's current class list. |
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removeJS | Helper method to dynamically remove a JS file previously loaded from the script section of the current document. |
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requestAnimationFrame | Requests an animation frame, with a fallback for older browsers. |
Public Fields
| Name | Description | |
|---|---|---|
 |
browser | Gets or sets the current browser. |
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device | Gets or sets the current device. |
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licenseDirectory | The directory path where LEADTOOLS looks for the license file (Deprecated). |
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msPointerEnabled | Gets or sets a value indicating whether the current browser supports the Windows 8 style touch input. |
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OS | Gets or sets the current operating system. |
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requestCustomHeaders | An object to set custom headers to for use when requesting the LEADTOOLS license files. |
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supportsAnimationFrame | Gets or sets a value indicating whether the current browser supports the HTML 5 animation frame. |
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supportsCanvas | Gets or sets a value indicating whether the current browser supports HTML 5 Canvas element. |
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supportsCSSTransitions | Gets or sets a value indicating whether the current browser supports CSS3 Transitions, either through the normal transitionrule or a vendor prefix such as webkitTransition/webkit-transition. |
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supportsFileReader | Gets or sets a value indicating whether the current browser supports the File/FileReader API, including the File, FileReader, URL, and Blob objects. |
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supportsHTMLPointerEvents | Gets or sets a value indicating whether the current browser supports the CSS rule pointer-events for HTML elements. |
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supportsMouse | Gets or sets a value indicating whether the current browser supports mouse input. |
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supportsMultiTouch | Gets or sets a value indicating whether the current browser supports multi-touch input. |
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supportsScroll | Gets or sets a value indicating whether the current browser supports scrollbars. |
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supportsTouch | Gets or sets a value indicating whether the current browser supports touch input. |
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supportsTransform | Gets or sets a value indicating whether the current browser supports HTML transformation. |
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supportsTypedArray | Gets or sets a value indicating whether the current browser supports HTML typed arrays. |
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supportsWebGL | Gets or sets a value indicating whether the current browser supports WebGL. |
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supportsWebWorker | Gets or sets a value indicating whether the current browser supports HTML 5 Web Workers. |
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vendor | Gets or sets the current browser vendor. |
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version | Gets or sets the current browser version. |
