HTML onchange (this.value)

javascript html onchange
e.klara.k picture e.klara.k · Sep 9, 2015 · Viewed 69.7k times · Source

We found this in our code (we haven't written it by our selfs, and we are new to programmng), can anyone explain what this.value means and how you change it?

<select id="sel_target" onchange="paint(this.value);sendid(value); highlight(value);move_to(value)">

Thank you!

Answer

SVK picture SVK · Sep 9, 2015

this.value represents the selected value.

Example:

function getComboA(sel) {
    var value = sel.value;  
}

<select id="comboA" onchange="getComboA(this)">
<option value="">Select combo</option>
<option value="Value1">Text1</option>
<option value="Value2">Text2</option>
<option value="Value3">Text3</option>
</select>

The above example gets you the selected value OnChange event.

Related questions

How to pass parameters on onChange of html select

I am a novice at JavaScript and jQuery. I want to show one combobox-A, which is an HTML <select> with its selected id and contents at the other place on onChange(). How can I pass the complete combobox …

Read More
onchange event on input type=range is not triggering in firefox while dragging

When I played with <input type="range">, Firefox triggers an onchange event only if we drop the slider to a new position where Chrome and others triggers onchange events while the slider is dragged. How can I make …

Read More
onChange and onSelect in DropDownList

I have a DropDownList that asks the user if he want to join the club: Do you want to join the club Yes No Under this list there is another list that is set to disabled as a default. This …

Read More