Web Front-end
JS Tutorial
Detailed explanation of iframe cross-domain communication encapsulation_jquery
Detailed explanation of iframe cross-domain communication encapsulation_jquery
iframe cross-domain communication
View the demo Source code download
As we all know, due to the security restrictions imposed by front-end javascript on cross-domain access, javascript can only access content in the same domain as the document containing it.
Usage example:
The requirement is to embed http://www.iframe.com/iframe.html through iframe in http://www.demo.org/top.html, In the iframe page, you want to call a js method on the top page by clicking a button.
1. Create a method in the top page for use by internal pages
function testFun (text) {
alert(text);
}
2. Embed iframe in http://www.demo.org/top.html
3. Create a proxy page under the www.demo.org domain http://www.demo.org/proxy.htmlfor cross-domain communication
4. Add the logic for the proxy page in http://www.demo.org/proxy.html
5. Configure the proxy page address through js in the http://www.iframe.com/iframe.html page
TopProxyConfig = {url:'http://www.demo.org/proxy.html'};
6. Load communication module through kissy
KISSY.use('topproxy', function(S, TopProxy){
//Execute code
});
7. Directly access http://www.demo.org/top.html through TopProxy.call at http://www.iframe.com/iframe.html Methods in , such as
KISSY.use('topproxy', function(S, TopProxy){
TopProxy.call('testFun', '这是一个真实的故事');
});The first parameter of the call method is the global method name of the external web page, which supports ".". There are unlimited following parameters, all of which are passed to the target method.
Note:
1. It may not be executed immediately after being called. It will be triggered after the iframe is loaded. If you want to preload, you can execute a useless method in advance.
2. If TopProxyConfig is not set, it will be considered that the referenced iframe and the parent iframe are in the same domain (large domain) and the top object will be called directly.
3. Under IE678, an error may be reported if you directly call the system method in top, because the system method does not support apply.
Principle:
Page A is embedded in iframe page B. If B wants to call A's method and pass data, then B can embed an iframe page C in the same domain as page A. C can access A through window.top window. Then in B, you can change the hash of C's href to pass some information to C, and then C passes the information to A, thus indirectly achieving the purpose of B transmitting information to A
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1377
52
How do I create and publish my own JavaScript libraries?
Mar 18, 2025 pm 03:12 PM
Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.
How do I optimize JavaScript code for performance in the browser?
Mar 18, 2025 pm 03:14 PM
The article discusses strategies for optimizing JavaScript performance in browsers, focusing on reducing execution time and minimizing impact on page load speed.
What should I do if I encounter garbled code printing for front-end thermal paper receipts?
Apr 04, 2025 pm 02:42 PM
Frequently Asked Questions and Solutions for Front-end Thermal Paper Ticket Printing In Front-end Development, Ticket Printing is a common requirement. However, many developers are implementing...
How do I debug JavaScript code effectively using browser developer tools?
Mar 18, 2025 pm 03:16 PM
The article discusses effective JavaScript debugging using browser developer tools, focusing on setting breakpoints, using the console, and analyzing performance.
How do I use source maps to debug minified JavaScript code?
Mar 18, 2025 pm 03:17 PM
The article explains how to use source maps to debug minified JavaScript by mapping it back to the original code. It discusses enabling source maps, setting breakpoints, and using tools like Chrome DevTools and Webpack.
Who gets paid more Python or JavaScript?
Apr 04, 2025 am 12:09 AM
There is no absolute salary for Python and JavaScript developers, depending on skills and industry needs. 1. Python may be paid more in data science and machine learning. 2. JavaScript has great demand in front-end and full-stack development, and its salary is also considerable. 3. Influencing factors include experience, geographical location, company size and specific skills.
Getting Started With Chart.js: Pie, Doughnut, and Bubble Charts
Mar 15, 2025 am 09:19 AM
This tutorial will explain how to create pie, ring, and bubble charts using Chart.js. Previously, we have learned four chart types of Chart.js: line chart and bar chart (tutorial 2), as well as radar chart and polar region chart (tutorial 3). Create pie and ring charts Pie charts and ring charts are ideal for showing the proportions of a whole that is divided into different parts. For example, a pie chart can be used to show the percentage of male lions, female lions and young lions in a safari, or the percentage of votes that different candidates receive in the election. Pie charts are only suitable for comparing single parameters or datasets. It should be noted that the pie chart cannot draw entities with zero value because the angle of the fan in the pie chart depends on the numerical size of the data point. This means any entity with zero proportion
TypeScript for Beginners, Part 2: Basic Data Types
Mar 19, 2025 am 09:10 AM
Once you have mastered the entry-level TypeScript tutorial, you should be able to write your own code in an IDE that supports TypeScript and compile it into JavaScript. This tutorial will dive into various data types in TypeScript. JavaScript has seven data types: Null, Undefined, Boolean, Number, String, Symbol (introduced by ES6) and Object. TypeScript defines more types on this basis, and this tutorial will cover all of them in detail. Null data type Like JavaScript, null in TypeScript
