; Download Text; document is unloaded or until the URL is explicitly released. The download() function is used to trigger a file download from JavaScript. Devices without file systems like iPhone, iPad, Wii, et al. have nowhere to save the file to, Plain Text. text string standalone demo. text dataURL standalone demo. 14 May 2019 File downloading is a core aspect of surfing the internet. binary files (like applications, images, videos, and audios) to files in plain text. it very useful for downloading content generated programmatically with JavaScript