Option index attribute

Mfano wa Option wa DOM wa HTML

Definition and Usage

index Sets or returns the index position of the option in the dropdown list.

Indexes (indices) start from 0.

See also:

HTML Reference Manual:Tafuta <option> ya HTML

Instance

Example 1

Show the index and text of the selected option in the dropdown list:

var x = document.getElementById("mySelect").selectedIndex;
var y = document.getElementById("mySelect").options;
alert("Index: " + y[x].index + " is " + y[x].text);

Kufaa kwa uwanza

Example 2

Show all text and index of options in the dropdown list:

var x = document.getElementById("mySelect");
var txt = "All options: ";
var i;
for (i = 0; i < x.length; i++) {
    txt = txt + "\n" + x.options[i].text + " has index: " + x.options[i].index;
}

Kufaa kwa uwanza

Inayofanywa kwa

Kutumia index ya muundo:

optionObject.index

Mtuwa kwa index ya muundo:

optionObject.index = integer

Muundo wa kiwango

Wakati Utafiti
integer Inashughulikia indidi ya kitambaa cha kizito cha chagua.

Vitambaa vya teknolojia

Wakati: Wakati, inaangazia indidi ya kitambaa cha kizito cha chagua. Indidi inatufika kuanzia 0.

Muunaji wa kifungu

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Mfano wa Option wa DOM wa HTML