Options button in html

How TO — Custom Select Box

Learn how to create custom select boxes with CSS and JavaScript.

Custom Select Box

Create a Custom Select Menu

Step 1) Add HTML:

Example

Step 2) Add CSS:

Example

/* The container must be positioned relative: */
.custom-select position: relative;
font-family: Arial;
>

.custom-select select display: none; /*hide original SELECT element: */
>

.select-selected background-color: DodgerBlue;
>

/* Style the arrow inside the select element: */
.select-selected:after position: absolute;
content: «»;
top: 14px;
right: 10px;
width: 0;
height: 0;
border: 6px solid transparent;
border-color: #fff transparent transparent transparent;
>

/* Point the arrow upwards when the select box is open (active): */
.select-selected.select-arrow-active:after border-color: transparent transparent #fff transparent;
top: 7px;
>

/* style the items (options), including the selected item: */
.select-items div,.select-selected color: #ffffff;
padding: 8px 16px;
border: 1px solid transparent;
border-color: transparent transparent rgba(0, 0, 0, 0.1) transparent;
cursor: pointer;
>

/* Style items (options): */
.select-items position: absolute;
background-color: DodgerBlue;
top: 100%;
left: 0;
right: 0;
z-index: 99;
>

/* Hide the items when the select box is closed: */
.select-hide display: none;
>

.select-items div:hover, .same-as-selected background-color: rgba(0, 0, 0, 0.1);
>

Step 3) Add JavaScript:

Example

var x, i, j, l, ll, selElmnt, a, b, c;
/* Look for any elements with the class «custom-select»: */
x = document.getElementsByClassName(«custom-select»);
l = x.length;
for (i = 0; i < l; i++) selElmnt = x[i].getElementsByTagName("select")[0];
ll = selElmnt.length;
/* For each element, create a new DIV that will act as the selected item: */
a = document.createElement(«DIV»);
a.setAttribute(«class», «select-selected»);
a.innerHTML = selElmnt.options[selElmnt.selectedIndex].innerHTML;
x[i].appendChild(a);
/* For each element, create a new DIV that will contain the option list: */
b = document.createElement(«DIV»);
b.setAttribute(«class», «select-items select-hide»);
for (j = 1; j < ll; j++) /* For each option in the original select element,
create a new DIV that will act as an option item: */
c = document.createElement(«DIV»);
c.innerHTML = selElmnt.options[j].innerHTML;
c.addEventListener(«click», function(e) /* When an item is clicked, update the original select box,
and the selected item: */
var y, i, k, s, h, sl, yl;
s = this.parentNode.parentNode.getElementsByTagName(«select»)[0];
sl = s.length;
h = this.parentNode.previousSibling;
for (i = 0; i < sl; i++) if (s.options[i].innerHTML == this.innerHTML) s.selectedIndex = i;
h.innerHTML = this.innerHTML;
y = this.parentNode.getElementsByClassName(«same-as-selected»);
yl = y.length;
for (k = 0; k < yl; k++) y[k].removeAttribute("class");
>
this.setAttribute(«class», «same-as-selected»);
break;
>
>
h.click();
>);
b.appendChild(c);
>
x[i].appendChild(b);
a.addEventListener(«click», function(e) /* When the select box is clicked, close any other select boxes,
and open/close the current select box: */
e.stopPropagation();
closeAllSelect(this);
this.nextSibling.classList.toggle(«select-hide»);
this.classList.toggle(«select-arrow-active»);
>);
>

function closeAllSelect(elmnt) /* A function that will close all select boxes in the document,
except the current select box: */
var x, y, i, xl, yl, arrNo = [];
x = document.getElementsByClassName(«select-items»);
y = document.getElementsByClassName(«select-selected»);
xl = x.length;
yl = y.length;
for (i = 0; i < yl; i++) if (elmnt == y[i]) arrNo.push(i)
> else y[i].classList.remove(«select-arrow-active»);
>
>
for (i = 0; i < xl; i++) if (arrNo.indexOf(i)) x[i].classList.add("select-hide");
>
>
>

/* If the user clicks anywhere outside the select box,
then close all select boxes: */
document.addEventListener(«click», closeAllSelect);

Источник

HTML Form Elements

This chapter describes all the different HTML form elements.

The HTML Elements

The HTML element can contain one or more of the following form elements:

The Element

One of the most used form element is the element.

The element can be displayed in several ways, depending on the type attribute.

Example

All the different values of the type attribute are covered in the next chapter: HTML Input Types.

The Element

The element defines a label for several form elements.

The element is useful for screen-reader users, because the screen-reader will read out loud the label when the user focus on the input element.

The element also help users who have difficulty clicking on very small regions (such as radio buttons or checkboxes) — because when the user clicks the text within the element, it toggles the radio button/checkbox.

The for attribute of the tag should be equal to the id attribute of the element to bind them together.

The Element

The element defines a drop-down list:

Example

The elements defines an option that can be selected.

By default, the first item in the drop-down list is selected.

To define a pre-selected option, add the selected attribute to the option:

Example

Visible Values:

Use the size attribute to specify the number of visible values:

Example

Allow Multiple Selections:

Use the multiple attribute to allow the user to select more than one value:

Example

The Element

The element defines a multi-line input field (a text area):

Example

The rows attribute specifies the visible number of lines in a text area.

The cols attribute specifies the visible width of a text area.

This is how the HTML code above will be displayed in a browser:

You can also define the size of the text area by using CSS:

Example

The Element

The element defines a clickable button:

Example

This is how the HTML code above will be displayed in a browser:

Note: Always specify the type attribute for the button element. Different browsers may use different default types for the button element.

The and Elements

The element is used to group related data in a form.

The element defines a caption for the element.

Example

This is how the HTML code above will be displayed in a browser:

The Element

The element specifies a list of pre-defined options for an element.

Users will see a drop-down list of the pre-defined options as they input data.

The list attribute of the element, must refer to the id attribute of the element.

Example

The Element

The element represents the result of a calculation (like one performed by a script).

Example

Perform a calculation and show the result in an element:

HTML Exercises

HTML Form Elements

Tag	Description
	Defines an HTML form for user input
	Defines an input control
	Defines a multiline input control (text area)
	Defines a label for an element
	Groups related elements in a form
	Defines a caption for a element
	Defines a drop-down list
	Defines a group of related options in a drop-down list
	Defines an option in a drop-down list
	Defines a clickable button
	Specifies a list of pre-defined options for input controls
	Defines the result of a calculation

For a complete list of all available HTML tags, visit our HTML Tag Reference.

Источник