DZone
Thanks for visiting DZone today,
Edit Profile
  • Manage Email Subscriptions
  • How to Post to DZone
  • Article Submission Guidelines
Sign Out View Profile
  • Post an Article
  • Manage My Drafts
Over 2 million developers have joined DZone.
Log In / Join
Refcards Trend Reports Events Over 2 million developers have joined DZone. Join Today! Thanks for visiting DZone today,
Edit Profile Manage Email Subscriptions Moderation Admin Console How to Post to DZone Article Submission Guidelines
View Profile
Sign Out
Refcards
Trend Reports
Events
Zones
Culture and Methodologies Agile Career Development Methodologies Team Management
Data Engineering AI/ML Big Data Data Databases IoT
Software Design and Architecture Cloud Architecture Containers Integration Microservices Performance Security
Coding Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks
Partner Zones AWS Cloud
by AWS Developer Relations
Culture and Methodologies
Agile Career Development Methodologies Team Management
Data Engineering
AI/ML Big Data Data Databases IoT
Software Design and Architecture
Cloud Architecture Containers Integration Microservices Performance Security
Coding
Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance
Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks
Partner Zones
AWS Cloud
by AWS Developer Relations
The Latest "Software Integration: The Intersection of APIs, Microservices, and Cloud-Based Systems" Trend Report
Get the report
  1. DZone
  2. Coding
  3. JavaScript
  4. Intercepting onclick event in JavaScript using JQuery

Intercepting onclick event in JavaScript using JQuery

Veera Sundar user avatar by
Veera Sundar
·
Oct. 14, 11 · Interview
Like (0)
Save
Tweet
Share
9.27K Views

Join the DZone community and get the full member experience.

Join For Free

Let’s say you are using some external components in your web page that renders a button as below:

<input type="button" value="Delete" onclick="delete();" />

The above code will call the delete() method when user clicks on the button.

But, what if you want to show a confirmation box before calling the delete()? Since the code is rendered by a external component, most probably you won’t be having control over how its code generated.

So, you have to intercept the onclick event and block it until your method is called and then invoke the original method.

Lets do it..

var btn = $("#btn");
btn.data("funcToCall", btn.attr("onclick"));
$("#btn").removeAttr("onclick");
$("#btn").bind("click", function(e){
    if(confirm("Are you sure?")){
        var func = $(this).data("funcToCall");
        eval(func);
    }
});

As you can see, the onclick function is first stored into that element and then the onclick attribute is removed. Finally when the button in clicked, our custom method is called first and based on the user decision, the delete() method is either called or not called.

From http://veerasundar.com/blog/2011/10/intercepting-onclick-event-in-javascript-using-jquery/

Event JavaScript JQuery

Opinions expressed by DZone contributors are their own.

Popular on DZone

  • Top 5 Data Streaming Trends for 2023
  • Microservices Testing
  • Assessment of Scalability Constraints (and Solutions)
  • What Is Advertised Kafka Address?

Comments

Partner Resources

X

ABOUT US

  • About DZone
  • Send feedback
  • Careers
  • Sitemap

ADVERTISE

  • Advertise with DZone

CONTRIBUTE ON DZONE

  • Article Submission Guidelines
  • Become a Contributor
  • Visit the Writers' Zone

LEGAL

  • Terms of Service
  • Privacy Policy

CONTACT US

  • 600 Park Offices Drive
  • Suite 300
  • Durham, NC 27709
  • support@dzone.com
  • +1 (919) 678-0300

Let's be friends: