


Implementation method of iframe window height adaption_javascript skills
There is a page index.html in domainA, and a page other.html in domainB is nested through an iframe.
Since the other.html page is displayed in an iframe, and its page content will dynamically increase or decrease, now The scroll bar of the iframe needs to be removed
Due to the restrictions of the JavaScript same-origin policy, cross-domain operations cannot be performed, which makes the problem more difficult
After referring to the online practice, an agent page, or agent.html, was introduced. Belongs to domainA
Then, in other.html in domainB, use iframe to nest agent.html
Okay, now the situation is like this:
index.html uses iframe to nest other.html
other.html uses iframe to nest agent.html
The reason why we need to introduce the third page agent .html is to comply with the rules of the "same origin policy" and complete the transfer of parameters under different domains!
Our ultimate goal is to remove the scroll bar and ensure that all embedded page contents are displayed
1. Get the actual height of the other.html page
2. Set the height to its embedded
on the src attribute of the iframe 3. Intercept the height value in the src attribute of the iframe to which it belongs in agent.html
In the following example, a trick is used to avoid using setInterval() to continuously set the height of the iframe.
The method is to append a timestamp to the src of the iframe to allow the browser to reload the agent every time. .html
and then let the js function invokeMethodInTopWindow() in agent.hml be executed
2 html
index.html
#{extends 'main.html' /}
#{set title:'Home' /}
agent.html
I am an agent page!
other.html in domainB
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。
比如一个黑客程序,他利用IFrame把真正的银行登录页面嵌到他的页面上,当你使用真实的用户名,密码登录时,
他的页面就可以通过Javascript读取到你的表单中input中的内容,这样用户名,密码就轻松到手了。

JavaScript runs in browsers and Node.js environments and relies on the JavaScript engine to parse and execute code. 1) Generate abstract syntax tree (AST) in the parsing stage; 2) convert AST into bytecode or machine code in the compilation stage; 3) execute the compiled code in the execution stage.

The future trends of Python and JavaScript include: 1. Python will consolidate its position in the fields of scientific computing and AI, 2. JavaScript will promote the development of web technology, 3. Cross-platform development will become a hot topic, and 4. Performance optimization will be the focus. Both will continue to expand application scenarios in their respective fields and make more breakthroughs in performance.

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JavaScript is widely used in websites, mobile applications, desktop applications and server-side programming. 1) In website development, JavaScript operates DOM together with HTML and CSS to achieve dynamic effects and supports frameworks such as jQuery and React. 2) Through ReactNative and Ionic, JavaScript is used to develop cross-platform mobile applications. 3) The Electron framework enables JavaScript to build desktop applications. 4) Node.js allows JavaScript to run on the server side and supports high concurrent requests.

Python is more suitable for data science and automation, while JavaScript is more suitable for front-end and full-stack development. 1. Python performs well in data science and machine learning, using libraries such as NumPy and Pandas for data processing and modeling. 2. Python is concise and efficient in automation and scripting. 3. JavaScript is indispensable in front-end development and is used to build dynamic web pages and single-page applications. 4. JavaScript plays a role in back-end development through Node.js and supports full-stack development.


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