In a piece of html code,
How to use js or jquey to change it into
Reply to discussion (solution)
Add an ID to the button
Js--JQ:
$("#bt1").attr("onclick",function (){
alert("111");
})
About this
As long as you can find this element, the event is still easy to add
$('button').click(function(){
});
Add an ID to the button
Js--JQ:
$("#bt1").attr("onclick",function(){
alert("111");
})
About like this
Using this method, why does alert execute when I append this html code segment, but the "click" button after appending does not execute
Add an ID to the button
Js--JQ:
$("#bt1").attr("onclick",function(){
alert("111");
})
About like this
Use this Method, why does alert execute when I append this html code segment, but the "click" button after appending does not execute?
Then you can check which version of jq you are using. Please read the documentation for details
Low version can use
$("#bt1").live("click",function(){});
High version can use:
$("body").on("click","#bt1",function(){});
Add an ID to the button
Js--JQ:
$("#bt1").attr("onclick",function(){
alert("111");
})
Probably like this
Using this method, why does alert execute when I append this html code segment, but after appending " Clicking the " button will not execute
Then you can check which version of jq you are using. Please read the documentation for details
You can use lower versions
$("#bt1").live("click",function(){});
Use higher versions:
$("body").on("click","#bt1",function(){});
Why is it called when the event is bound instead of when the button is clicked?
Add an ID to the button
click
Js--JQ:
$("#bt1").attr("onclick",function() {
alert("111");
})
Probably like this
Using this method, why does alert execute when I append this html code segment, and append The "Click" button after that will not be executed
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档</title></head><script type="text/javascript" src="jquery-1.js"></script><script type="text/javascript"> var sa = $("#bt1"); function ale(){ //alert(sa) document.getElementById('bt1').setAttribute('onclick','gogogo()') } function gogogo(){ alert("ou yeah"); }</script><body><input type="button" id="bt1" value="123"/><input type="button" id="bt2" value="123312" onclick="ale()" /></body></html>It has been tested and can be used. Remember to import JQ

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.


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