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August 29, 2015 13:56
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htc script based placeholder polyfill for IE9
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| <html> | |
| <head> | |
| <link href="placeholder-fix.css" rel="stylesheet"> | |
| </head> | |
| <body> | |
| <div class="Control"> | |
| <input type="text" placeholder="123"> | |
| </div> | |
| </body> | |
| </html> |
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| .Control { | |
| display: inline-block; | |
| position: relative; | |
| } | |
| input, textarea { | |
| behavior: url("placeholder-fix.htc")\9; | |
| } | |
| .Placeholder { | |
| position: absolute; | |
| left: 0; | |
| top: 0; | |
| right: 0; | |
| } |
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| <PUBLIC:PROPERTY NAME="elPlaceholder" /> | |
| <PUBLIC:ATTACH EVENT="oncontentready" ONEVENT="generate()" /> | |
| <PUBLIC:ATTACH EVENT="onkeyup" ONEVENT="update()" /> | |
| <PUBLIC:ATTACH EVENT="onchange" ONEVENT="update()" /> | |
| <PUBLIC:ATTACH EVENT="onresize" ONEVENT="updateStyle()" FOR="window" /> | |
| <SCRIPT LANGUAGE="JScript"> | |
| function generate() { | |
| var content = element.getAttribute('placeholder'); | |
| if (!content) | |
| return; | |
| elPlaceholder = document.createElement('span'); | |
| elPlaceholder.className = 'Placeholder'; | |
| elPlaceholder.appendChild(document.createTextNode(content)); | |
| updateStyle(); | |
| element.parentNode.insertBefore(elPlaceholder, element.nextSibling); | |
| elPlaceholder.addEventListener('click', function(evt) { | |
| element.focus(); | |
| evt.preventDefault(); | |
| evt.stopPropagation(); | |
| }, false); | |
| } | |
| function updateStyle() { | |
| var computedStyle = window.getComputedStyle(element); | |
| var style = elPlaceholder.style; | |
| var scrollbarWidth = element.offsetWidth - element.clientWidth; | |
| if (scrollbarWidth) | |
| style.right = scrollbarWidth + 'px'; | |
| style.paddingLeft = computedStyle.paddingLeft; | |
| style.paddingRight = computedStyle.paddingRight; | |
| style.paddingTop = computedStyle.paddingTop; | |
| style.lineHeight = computedStyle.lineHeight; | |
| style.fontSize = computedStyle.fontSize; | |
| } | |
| function update() { | |
| elPlaceholder.style.display = element.value ? 'none' : 'inherit'; | |
| } | |
| </SCRIPT> |
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