Function: 1. Return the element content, the syntax is "element object.html()"; 2. Set the element content, the syntax is "element object.html(element's new content)"; 3. Use functions to set The content of the element, the syntax is "element object.html(function(index position of the selector, current content of the selector))".
The operating environment of this tutorial: windows10 system, jquery3.2.1 version, Dell G3 computer.
What functions are implemented by the html method in jquery
1. Return element content
When using this method to return a value, it will return the The content of a matching element.
Syntax
$(selector).html()
The example is as follows:
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".btn1").click(function(){
alert($("p").html());
});
});
</script>
</head>
<body>
<p>This is a paragraph.</p>
<button class="btn1">改变 p 元素的内容</button>
</body>Output result:
After clicking the button:
2. Set element content
When you use this method to set a value, it will overwrite the content of all matching elements.
Syntax
$(selector).html(content)
content Optional. Specifies the new content of the selected element. This parameter can contain HTML tags.
The example is as follows:
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".btn1").click(function(){
$("p").html("Hello <b>world!</b>");
});
});
</script>
</head>
<body>
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<button class="btn1">改变 p 元素的内容</button>
</body>Output result:
After clicking the button:
3. Use functions to set the content of elements
Use functions to set the contents of all matching elements.
Syntax
$(selector).html(function(index,oldcontent))
Parameter Description
function(index,oldcontent)
Specifies a function that returns the new content of the selected element.
index - Optional. Receives the index position of the selector.
oldcontent - Optional. Receives the current contents of the selector.
The example is as follows:
<head>
<script type="text/javascript" src="/jquery/jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$("p").html(function(n){
return "这个 p 元素的 index 是：" + n;
});
});
});
</script>
</head>
<body>
<p>这是一个段落。</p>
<p>这是另一个段落。</p>
<button>改变 p 元素的内容</button>
</body>Output result:
After clicking the button:
Recommended related video tutorials: jQuery video tutorial
The above is the detailed content of What functions are implemented by the html method in jquery. For more information, please follow other related articles on the PHP Chinese website!
CSS: Can I use multiple IDs in the same DOM?May 14, 2025 am 12:20 AMNo,youshouldn'tusemultipleIDsinthesameDOM.1)IDsmustbeuniqueperHTMLspecification,andusingduplicatescancauseinconsistentbrowserbehavior.2)Useclassesforstylingmultipleelements,attributeselectorsfortargetingbyattributes,anddescendantselectorsforstructure
The Aims of HTML5: Creating a More Powerful and Accessible WebMay 14, 2025 am 12:18 AMHTML5aimstoenhancewebcapabilities,makingitmoredynamic,interactive,andaccessible.1)Itsupportsmultimediaelementslikeand,eliminatingtheneedforplugins.2)Semanticelementsimproveaccessibilityandcodereadability.3)Featureslikeenablepowerful,responsivewebappl
Significant Goals of HTML5: Enhancing Web Development and User ExperienceMay 14, 2025 am 12:18 AMHTML5aimstoenhancewebdevelopmentanduserexperiencethroughsemanticstructure,multimediaintegration,andperformanceimprovements.1)Semanticelementslike,,,andimprovereadabilityandaccessibility.2)andtagsallowseamlessmultimediaembeddingwithoutplugins.3)Featur
HTML5: Is it secure?May 14, 2025 am 12:15 AMHTML5isnotinherentlyinsecure,butitsfeaturescanleadtosecurityrisksifmisusedorimproperlyimplemented.1)Usethesandboxattributeiniframestocontrolembeddedcontentandpreventvulnerabilitieslikeclickjacking.2)AvoidstoringsensitivedatainWebStorageduetoitsaccess
HTML5 goals in comparison with older HTML versionsMay 14, 2025 am 12:14 AMHTML5aimedtoenhancewebdevelopmentbyintroducingsemanticelements,nativemultimediasupport,improvedformelements,andofflinecapabilities,contrastingwiththelimitationsofHTML4andXHTML.1)Itintroducedsemantictagslike,,,improvingstructureandSEO.2)Nativeaudioand
CSS: Is it bad to use ID selector?May 13, 2025 am 12:14 AMUsing ID selectors is not inherently bad in CSS, but should be used with caution. 1) ID selector is suitable for unique elements or JavaScript hooks. 2) For general styles, class selectors should be used as they are more flexible and maintainable. By balancing the use of ID and class, a more robust and efficient CSS architecture can be implemented.
HTML5: Goals in 2024May 13, 2025 am 12:13 AMHTML5'sgoalsin2024focusonrefinementandoptimization,notnewfeatures.1)Enhanceperformanceandefficiencythroughoptimizedrendering.2)Improveaccessibilitywithrefinedattributesandelements.3)Addresssecurityconcerns,particularlyXSS,withwiderCSPadoption.4)Ensur
What are the main areas where HTML5 tried to improve?May 13, 2025 am 12:12 AMHTML5aimedtoimprovewebdevelopmentinfourkeyareas:1)Multimediasupport,2)Semanticstructure,3)Formcapabilities,and4)Offlineandstorageoptions.1)HTML5introducedandelements,simplifyingmediaembeddingandenhancinguserexperience.2)Newsemanticelementslikeandimpr
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Safe Exam Browser
Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.
VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.
SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.
SecLists
SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.
