Expert Developer JavaScript Question: Download Expert JavaScript Developer PDF
Explain with an example the use of event handlers in JavaScript?
Answer:
The events in JavaScript are the actions in a document that result from user activity. The actions are like clicking on a button or typing a character in the form. JavaScript object in a document that receives events of different kinds. To handle the events that are taking place requires an even handler that can handle the execution of the events. Event acts like an added attribute that is entered in object's HTML. The attribute is consisting of event name, sign like (=), instructions. The following code shows the event handler as :
<HTML>
<BODY>
<FORM>
<INPUT TYPE="button" VALUE="Hello" onClick="window.alert ('HELLO WORLD')">
</FORM>
</BODY>
</HTML>
<HTML>
<BODY>
<FORM>
<INPUT TYPE="button" VALUE="Hello" onClick="window.alert ('HELLO WORLD')">
</FORM>
</BODY>
</HTML>
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