Created
August 23, 2017 11:22
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| <html> | |
| <head> | |
| <style> | |
| .shadow-input { opacity: 0; } | |
| .prompt { font-family: monospace; } | |
| .cursor { | |
| display: flex; | |
| flex-direction: row; | |
| position: absolute; | |
| } | |
| .cursor .offset { opacity: 0; } | |
| .cursor .caret { | |
| background-color: green; | |
| display: inline-block; | |
| height: 1em; | |
| opacity: .5; | |
| width: 8px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div class="prompt"> | |
| <div class="cursor"> | |
| <span class="offset"></span> | |
| <span class="caret"></span> | |
| </div> | |
| <div class="content"></div> | |
| </div> | |
| <input type="text" class="shadow-input" /> | |
| <script> | |
| (function() { | |
| let shadow_input = document.querySelector(".shadow-input"), | |
| prompt_text = document.querySelector(".prompt .content"), | |
| cursor_offset = document.querySelector(".cursor .offset"); | |
| shadow_input.addEventListener("keydown", function handle_prompt_keydown() { | |
| setTimeout(render_prompt, 15); | |
| }); | |
| function render_prompt() { | |
| let buffer = shadow_input.value, | |
| cursor_position = shadow_input.selectionStart; | |
| prompt_text.textContent = buffer; | |
| let positioning_text = buffer.slice(0, cursor_position); | |
| cursor_offset.textContent = positioning_text; | |
| } | |
| shadow_input.focus(); | |
| render_prompt(); | |
| })(); | |
| </script> | |
| </body> | |
| </html> | |
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