Trigger javascript with button

How to use an HTML button to call a JavaScript function?

We use the onclick event attribute property of the HTML button to call a JavaScript function. The JavaScript code provided in the onclick attribute executes when the button is clicked. There are various attributes provided with the button tag in HTML that allows us to customize the button’s functionality and also let us decide how and what the button triggers.

Approach 1: Using the onclick event in JavaScript

The onclick event of the button element expects JavaScript code that is triggered when the button is clicked upon. So we put the function that needs to be called in the onclick property as well.

Syntax

This creates an HTML button with the name «click me» and triggers the «fun()» function.

Example 1

Here we will use an HTML button to call a JavaScript function. The associated function body executes when the button is clicked. Let’s look at the code for same.

!DOCTYPE html> html> title>Online Javascript Editor/title> head> /head> body> script> function fun()  document.getElementById("result").innerHTML = "The function fun() is triggered !"; > /script> Calling js function using HTML button br>br> button onclick = "fun()"> click me !/button> p> div id = "result"> /div> /p> /body> /html> 
 

In the above code, The function fun() is triggered when the button is clicked.

Approach 2: Using the ondblclick event in JavaScript

More options are provided to customize the execution of the JavaScript functions in different ways. for example, we can also set the function to be called only when the button is double-clicked. This can be done with the «ondblclick» event of the button tag.

Syntax

This creates an HTML button with the name «Button_Name» and triggers the «fun()» function when the button is double-clicked.

Example 2

Here we will use an HTML button to call a JavaScript function. The associated function body executes when the button is double-clicked.

!DOCTYPE html> html> title>Online Javascript Editor/title> head> /head> body> script> function fun()  document.getElementById("result").innerHTML = "The function fun() is triggered !"; > /script> h3>Calling js function using HTML button br>/h3> p> Double click "click me!" button /p> button ondblclick = "fun()"> click me ! /button> p> div id = "result"> /div> /p> /body> /html> 
 

In the above code, we have the «click me» button that triggers the fun() function when it is double clicked.

Approach 3: Using the onclick event of an input button

Buttons can also be part of forms that do some sort of validation and form submission. Buttons can also be created using the input tag provided by HTML. The onclick event attribute is again configured to handle the behavior of the button.

Syntax

This creates an HTML button with the name «Button_Name» and triggers the «fun()» function.

Let us look at an example to see this use case.

Example 3

We will create a button for submitting a mock form, this button triggers the JavaScript function provided in the onclick property.

!DOCTYPE html> html> title>Online Javascript Editor/title> head> /head> body> script> function fun()  document.getElementById("result").innerHTML = "The function fun() is triggered !"; > /script> Calling js function using HTML button br>br> form> label> Name : /label> input type = "text"> /input>br>br> input type = "button" onclick = "fun()" value = "submit"> /form> p> div id = "result"> /div> /p> /body> /html> 
 

In the above code, The function fun() is triggered when the submit button is clicked.

Approach 4: Using jQuery

As an alternative we can also use jQuery to attach the function to the button programmatically.

Syntax

This jQuery script checks for the readiness of the document and then attaches the function fun() to the click of the button having id as «Your_Button».

Let us look at an example to see this use case.

Example 4

We will create a HTML button and attach an event handler «onclick» to it programmatically using jQuery. Note that this attachment happens after the complete document has been rendered successfully.

The script in head tag imports the jQuery.

!DOCTYPE html> html> title>Online Javascript Editor/title> head> script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js">/script> /head> body> Calling js function using HTML button br>br> button id="button"> click me !/button> p> div id="result"> /div> /p> script> $(document).ready(function()  $('#button').click(function()  fun(); >); >); function fun()  document.getElementById("result").innerHTML = "The function fun() is triggered !"; > /script> /body> /html> 
 

Conclusion

The onclick property of HTML buttons are a fast and effective way of attaching JavaScript functions to them.

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Javascript how to trigger javascript from a button

In javascript add an event handler: Solution 2: Add a button in your HTML like this one: Then retrieve this button in your script and use an event listener to listen the click events: Solution 3: While both of the other answers are correct, and are a very good way to do it, I’ll try to answer using an object Edit: https://jsfiddle.net/u1yfsp4z/4/ Solution 1: Use in the client.js and place your code to Solution 2: If this console is printed, console.log(‘Client-side code running’); Try to add your button event inside a function. If you want to use vanilla javaScript onlt then include the following code after you set the inner html, Solution 2: You can try something like that : Solution 3: You need to move the selector inside the function: EDIT: using your second technic:

How to make an HTML button trigger a Javascript function

You’re pretty close, just a couple of fixes.

First, you’re not including jQuery in your JS fiddle. Secondly, your toggleCheckbox function is not in the global scope, so it can’t be accessed inline. Lastly, you’d need to update your appear/disappear functions. It seemed like they weren’t toggling both the checkbox and the button in the same way.

Updated Code

function toggleCheckbox() < //moved function to global scope, if you wanted to add the listner inline you'd do it this way. if($("#toggle").is(':checked')) < SurveyAppear(); >else < SurveyDisappear(); >> var SurveyAppear = function() < $("#surveyButton").prop('value', 'Open'); //switched from Close $("#toggle").prop('checked', false); //changed to false >var SurveyDisappear = function() < $("#surveyButton").prop('value', 'Close'); //switched from Open $("#toggle").prop('checked', true); >document.getElementById("surveyButton").addEventListener("click", toggleCheckbox, false); 

See it working in the updated fiddle. https://jsfiddle.net/igor_9000/mL0uLx81/2/

Please find below plunker link https://plnkr.co/edit/vYvi4F45s6PpKrRvwqsA?p=preview

There might be spelling mistakes

        // Code goes here function sampleFun()

If you’re using jQuery, you can select the input tag that specifies the button, and attach a .click() listener to it, like this:

Otherwise, I think you have done the right thing. Hope my above solution helps!

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Javascript trigger request with a button?

In your html create a button

In javascript add an event handler:

document.getElementById('btn').addEventListener("click", function()< var question = prompt("What is the meaning of life?"); //do whatever you want to do with the answer >); 

Add a button in your HTML like this one:

Then retrieve this button in your script and use an event listener to listen the click events:

var button = document.getElementById('clickMe'); button.addEventListener('click', trigger); function trigger() < // all your code :) >

While both of the other answers are correct, and are a very good way to do it, I’ll try to answer using an object

  Input Output 

Edit: https://jsfiddle.net/u1yfsp4z/4/

Using an HTML button to call a JavaScript function, 1: There’s defining it in the HTML: · 2: There’s adding it to the

How do I trigger javascript from a button click

window.addEventListener("load", myFunction); 

and place your code to myFunction

If this console is printed, console.log(‘Client-side code running’);

Try to add your button event inside a function.

let say you have two files, client.js and server.js You can use socket.io for quicker response as apposed to HTTP request You just need to emit a key to the server and the server will respond to that emit. Client.js

let socket = io(); socket.emit('start') 

Javascript create button and trigger onclick function on HTML, I don’t see myModal used anywhere! Check if you are setting the id of modal div properly. · @SudhansuChoudhary, a sec let me paste the full code.

Javascript create button and trigger onclick function on HTML

As you are using jQuery, you can achieve hiding of modal as per below steps,

1. Remove binding of click event, onclick=’clear()’ . This is not needed.
2. Bind listener to the element with id as vicious using,

Alternatively try the following approach,

Stop the event from bubbling up.

If you want to use vanilla javaScript onlt then include the following code after you set the inner html,

var btn = document.getElementById("vicious"); btn.onclick = function()

You can try something like that :

You need to move the selector inside the function:

EDIT: using your second technic:

div.innerHTML = . ; var vicious = document.getElementById("vicious"); vicious.onclick = clear; 

Calling a button click from a javascript, document.getElementById(‘<%=bttnadd.ClientID%>‘).fireEvent(«onclick»);. Marked as answer by Anonymous Thursday

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