Web development, coding & SEO


Code. Form Elements.

w3.org - Forms in HTML documents

w3schools.com - HTML FORM TAG

Form

<form action="#" method="post">
..................
</form>

A form requires attribute 'action' together with a value. If 'method' is declared, it requires a value.

Textbox, textfield

<input name="#" onfocus="if(this.value==this.defaultValue){this.value='';}" size="15" type="text" value="foo-boo" />
<input maxlength="6" name="#" style="width:222px;" type="password" value="1234567890" />

Maxlength limits the amount of characters. Size sets the width of the textbox and is overriden by the style.

Select drop-down

<select name="#">
	<option value="1">01</option>
	<option value="2" selected="selected">02</option>
	<option value="3">03</option>
</select>

hold down 'ctrl' to select more than one

<select multiple="multiple" name="#">
	<option value="1">tea</option>
	<option value="2">coffee</option>
	<option value="3">cacao</option>
</select>

Button

Button minimal

<input type="submit" value="Click Here" />

Button with hover effect

<input class="button-2" type="submit" value="Click!" />

body{
	behavior:url("ie-hover.htc");
}
.button-2{
	background:#ccc;
}
.button-2:hover{
	background:#bbb;
}

File ie-hover.htc in body selector makes IE6 respond to any hovers, otherwise it recognises link hovers (a:hover) only. ie6 hover htc download

Button with moving effect

<input class="button width" title="click here!" type="submit" value="Submit" />

.button-3{
	background:#bad;
	border:none;
	color:#ff0;
	height:22px;
	padding-bottom:2px;
	*padding-top:2px;
	width:100px;
}
.button-3:hover{/*button animation, optionally play with top-left and bottom-right borders*/
	left:1px;
	position:relative;
	top:1px;
}
input{/*trims elements horisontally*/
	vertical-align:baseline;
}

Button with image

<input alt="button beer" src="beer.gif" title="Click for Beer" type="image" />

Checkbox

A simple checkbox

A: B:

A: <input type="checkbox" />
B: <input type="checkbox" />

Clear ticked checkboxes, JavaScript

Clicking on the link clears ticked checkboxes. The thing requires <form> with name="foo", and can't have any checked="checked"

... ... ... ... ... clear all ticked boxes

<form name="foo" action="#">
<input type="checkbox" />...
<input type="checkbox" />...
<input type="checkbox" />...
<input type="checkbox" />...
<input type="checkbox" />...
<a href="javascript:document.foo.reset()">clear all ticked boxes</a>
</form>

Clear preselected checkboxes, JavaScript

All checkboxes are preselected, clicking on the link clears them all.

... ... ... ... ... clear all boxes

<input type="checkbox" id="check0" checked="checked" />...
<input type="checkbox" id="check1" checked="checked" />...
<input type="checkbox" id="check2" checked="checked" />...
<input type="checkbox" id="check3" checked="checked" />...
<input type="checkbox" id="check4" checked="checked" />...
<a href="#" onclick="uncheck()">clear all boxes</a>

<script type="text/javascript">
//<![CDATA[
function uncheck(){
	for (i = 0; i <= 4; i++){
		document.getElementById('check'+ i).checked = false;
	}
}
//]]>
</script>

Radio

Has to have attribute "name" with some value in order to work, name="foo" name="#" whatever.

Tea
Coffee
Cacao

<input name="foo" type="radio" value="a" /> Tea
<input checked="checked" name="foo" type="radio" value="b" /> Coffee
<input name="foo" type="radio" value="c" /> Cacao

Label

Encapsuling radio or checkbox in between <label> and </label> enables to check them even by clicking on text.

For IE6 add both for="foo1" and id="foo1".

<label for="foo3"><input id="foo3" type="radio" name="#" />Herradura Mango Mojito</label>

Good Practice - don't piggyback label tags for positioning.

Textarea

<textarea cols="50" rows="8">Hallooo....</textarea>

For Safari, set rows="6" at least, if less, the scrollbar does not fit in.

While placing a textarea somewhere in to a fixed-width thing, (and using overflow:auto;), reserve some space for the scrollbar. I.e. set the width of the textarea less for 2 cols.

Textarea requires cols and rows. Width and height set in style sheet override them.

<textarea cols="9" name="#" rows="3" style="background-color:#ff0;background-image:url(beer.gif);color:#00f;padding:11px;border:1px solid red;"></textarea>

Scrollbar color. The CSS colored scrollbars are visible in IE, not in FF.

If the content of an element overflows its area.

2008