How to change the onclick of a button to another function using JavaScript?

Question

This is my first question I'm asking. Is it possible to change the onclick="change()" to another function like onclick="change1()"

My code is like this:

<a href="#" onclick="changeSrc()" id="a1"><img src="images/transparent-arrow-hi.png" style="position:absolute; top:525px; left:1000px; height:50px; width:50px;" ></a>
<img src="images/keyboard.png" id="pic1">
<img src="images/mouse1.png" id="pic2">
<img src="images/PCstand.png" id="pic3">
<img src="images/monitor.png" id="pic4">

My Javascript is as follows:

<script>
function changeSrc() {
document.getElementById('pic1').src="images/robber1.jpg";
document.getElementById('pic2').src="images/guarding entrance 1.jpg";
document.getElementById('pic3').src="images/Lock.ico";
document.getElementById('pic4').src="images/Number pads.jpg";
}
</script>

This works so far in changing the img src , But I want to click the same button many times to change the img src to others.

So its like this button that when onclick , can call the first function to change the img src and at the same time prepare the onclick to call the second funtion.

Is that even possible?

I can add more code if needed.

Answer 1

you can have counter and every time call your function increase number of counter and select what actions you need.or you can use switch in changeSrc function

<script>
var counter = 0;
function changeSrc() {
 if(counter==0){
    document.getElementById('pic1').src="images/robber1.jpg";
    document.getElementById('pic2').src="images/guarding entrance 1.jpg";
    document.getElementById('pic3').src="images/Lock.ico";
    document.getElementById('pic4').src="images/Number pads.jpg";
}
 if(counter==1){
    document.getElementById('pic1').src="images/robber2.jpg";
    document.getElementById('pic2').src="images/guarding entrance 2.jpg";
    document.getElementById('pic3').src="images/Lock2.ico";
    document.getElementById('pic4').src="images/Number pads2.jpg";
}
    counter++;
}
</script>

if your images have pattern like numbers you can do this

<script>
var counter = 0;
function changeSrc() {
    document.getElementById('pic1').src="images/robber"+counter+".jpg";
    document.getElementById('pic2').src="images/guarding entrance "+counter+".jpg";;
    document.getElementById('pic3').src="images/Lock "+counter+".ico";;
    document.getElementById('pic4').src="images/Number pads"+counter+".jpg";;    
 counter++;
}
</script>

Answer 2

You can use this code snippet to dynamically associate and change the onclick function of the element.

 function changeSrc(_this){ //associate function change1 inside changeSrc $(_this).attr('onclick','change1(this)'); } function change1(_this){ //associate function change2 inside change1 $(_this).attr('onclick','change2(this)'); console.log('Iniside Change1()') } function change2(_this){ //associate function change3 inside change2 $(_this).attr('onclick','change3(this)'); console.log('Iniside Change2()') } function change3(_this){ console.log('Iniside Change3()') } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <a href="#" onclick="changeSrc(this)" id="a1"><img src="images/transparent-arrow-hi.png" style="position:absolute; top:525px; left:1000px; height:50px; width:50px;" >click</a>