How to change font in javascript-Front-end Q&A-php.cn

Home

Web Front-end

Front-end Q&A

How to change font in javascript

王林

May 27, 2023 am 10:48 AM

First of all, JavaScript is a scripting language mainly used for web development and programming of interactive applications. In web development, JavaScript can change the style of web elements, including fonts, by manipulating the DOM (Document Object Model).

Let’s take a look at how to use JavaScript to change the font.

Method 1: Change fonts through CSS styles

In web pages, we can define different fonts through CSS style sheets, and then use JavaScript to change the style of elements to change the fonts.

1. First, add a CSS style sheet to the head of the HTML document:

<head>
  <style>
    .my-text {
      font-family: 'Arial', sans-serif;
      font-size: 16px;
    }
  </style>
</head>

2. Then, select the element whose font you want to change in JavaScript and modify its class attribute.

var ele = document.getElementById('my-text');
ele.className = 'my-text';

This way you can set the font of the element to Arial font and the size to 16px.

Method 2: Directly change the style of the element

In addition to setting the font through the CSS style sheet, you can also directly modify the style of the element through JavaScript.

1. First, select the element you want to modify.

var ele = document.getElementById('my-text');

2. Then, use the style attribute to set the font style.

ele.style.fontFamily = 'Arial, sans-serif';
ele.style.fontSize = '16px';

This way you can set the font of the element to Arial font and the size to 16px.

It should be noted that when setting the element style directly, use camel case naming rules, such as fontSize instead of font-size.

In summary, using JavaScript to change fonts can be achieved through CSS style sheets or directly modifying element styles. In practical applications, it is necessary to choose the appropriate method to operate according to the specific situation.

The above is the detailed content of How to change font in javascript. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

CSS IDs vs Classes: which is better for accessibility?May 10, 2025 am 12:02 AM

Classesarebetterforaccessibilityinwebdevelopment.1)Classescanbeappliedtomultipleelements,ensuringconsistentstylesandbehaviors,whichaidsuserswithdisabilities.2)TheyfacilitatetheuseofARIAattributesacrossgroupsofelements,enhancinguserexperience.3)Classe

CSS: Understanding the Difference Between Class and ID SelectorsMay 09, 2025 pm 06:13 PM

Classselectorsarereusableformultipleelements,whileIDselectorsareuniqueandusedonceperpage.1)Classes,denotedbyaperiod(.),areidealforstylingmultipleelementslikebuttons.2)IDs,denotedbyahash(#),areperfectforuniqueelementslikeanavigationmenu.3)IDshavehighe

CSS Styling: Choosing Between Class and ID SelectorsMay 09, 2025 pm 06:09 PM

In CSS style, the class selector or ID selector should be selected according to the project requirements: 1) The class selector is suitable for reuse and is suitable for the same style of multiple elements; 2) The ID selector is suitable for unique elements and has higher priority, but should be used with caution to avoid maintenance difficulties.

HTML5: LimitationsMay 09, 2025 pm 05:57 PM

HTML5hasseverallimitationsincludinglackofsupportforadvancedgraphics,basicformvalidation,cross-browsercompatibilityissues,performanceimpacts,andsecurityconcerns.1)Forcomplexgraphics,HTML5'scanvasisinsufficient,requiringlibrarieslikeWebGLorThree.js.2)I

CSS: Is one style more priority than another?May 09, 2025 pm 05:33 PM

Yes,onestylecanhavemoreprioritythananotherinCSSduetospecificityandthecascade.1)Specificityactsasascoringsystemwheremorespecificselectorshavehigherpriority.2)Thecascadedeterminesstyleapplicationorder,withlaterrulesoverridingearlieronesofequalspecifici

What are the significant goals of the HTML5 specification?May 09, 2025 pm 05:25 PM

ThesignificantgoalsofHTML5aretoenhancemultimediasupport,ensurehumanreadability,maintainconsistencyacrossdevices,andensurebackwardcompatibility.1)HTML5improvesmultimediawithnativeelementslikeand.2)ItusessemanticelementsforbetterreadabilityandSEO.3)Its

What are the limitations of React?May 02, 2025 am 12:26 AM

React'slimitationsinclude:1)asteeplearningcurveduetoitsvastecosystem,2)SEOchallengeswithclient-siderendering,3)potentialperformanceissuesinlargeapplications,4)complexstatemanagementasappsgrow,and5)theneedtokeepupwithitsrapidevolution.Thesefactorsshou

React's Learning Curve: Challenges for New DevelopersMay 02, 2025 am 12:24 AM

Reactischallengingforbeginnersduetoitssteeplearningcurveandparadigmshifttocomponent-basedarchitecture.1)Startwithofficialdocumentationforasolidfoundation.2)UnderstandJSXandhowtoembedJavaScriptwithinit.3)Learntousefunctionalcomponentswithhooksforstate

See all articles