How to make the placeholder not fade out of focus

Question

I'm trying to emphasize the background of the text area, so I made the placeholder value equal to '__', this will make the text area like this

<textarea placeholder="____________________________________________"></textarea>

I tried this, but the lines disappeared when I change the value of the text area, so how can I fix it?

 var textarea=document.getElementById("textarea"); var value=""; for(var i=textarea.getAttribute("rows"); i > 1;i--) for(var j=textarea.getAttribute("cols"); j >=0 ;j--) value+="_"; $('#textarea').attr('placeholder',value); 

Answer 1

Here you have a solution: How to scroll a background image along with text in textarea?

Two options...

• background-image should be for one line (with repetition)
• A contenteditable div .

Credits are sent to @ana for her original answer.

Answer 2

As others have said, you should use the background to display constant lines under the text. The only problem is that the background is attached to the element, and not to the text, so scrolling the text does not move the background; and in fact, it is impossible to block scrolling only to full lines.

Therefore, instead, we should make a full text area, so the background is always correct. Then we put this textarea inside the shell element, which determines the height and puts additional content in the overflow. In order for the text area to automatically use the required height, we do not use the textarea element, but instead a contenteditable div.

The background comes from the CSS3 linear gradient, which is designed to set the line height inside:

 .textbox { border: 1px solid #CCC; margin: auto; width: 600px; height: 100px; overflow-y: auto; } .textbox div[contenteditable] { font: 16px/18px monospace; padding: 0px 10px; min-height: 100%; /* line-height - 1px for 1px high lines */ background-image: linear-gradient(to bottom, transparent 17px, #CCC 0px); /* height is equal to line-height */ background-size: 100% 18px; } 

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