如何使用jQuery将字符串的首字母转换为大写（） _前端开发

任务是大写字符串的第一个字母而不使用toUpperCase()方法借助jQuery。下面讨论了两种方法：
方法1：在此示例中, css()方法用于设置文字转换属性重视大写.
例子：

< !DOCTYPE HTML> < html > < head > < title > How to convert first letter of a string to upper case using jQuery? < / title > < script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js" > < / script > < / head > < body style = "text-align:center; " > < h1 style = "color:green; " > lsbin < / h1 > < p > Click on the button to perform the operation. < / p > Type Here: < input id = "input" /> < br > < br > < button onclick = "GFG_Fun()" > Click Here < / button > < p id = "GFG" > < / p > < script > var geeks = document.getElementById('GFG'); function GFG_Fun() { $('#input').css('textTransform', 'capitalize'); geeks.innerHTML = "Text is capitalized"; } < / script > < / body > < / html >

输出如下：

文章图片
方法二：在此示例中, 我们使用CSS属性执行操作。新的ID已添加到设置属性的元素中文字转换to大写.
例子：

< !DOCTYPE HTML> < html > < head > < title > How to convert first letter of a string to upper case using jQuery? < / title > < script src = "https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js" > < / script > < style > #capital { text-transform: capitalize; } < / style > < / head > < body style = "text-align:center; " > < h1 style = "color:green; " > lsbin < / h1 > < p > Click on the button to perform the operation. < / p > Type Here: < input id = "input" /> < br > < br > < button onclick = "GFG_Fun()" > Click Here < / button > < p id = "GFG" > < / p > < script > var geeks = document.getElementById('GFG'); function GFG_Fun() { $('#input').attr('id', 'capital'); geeks.innerHTML = "Text is capitalized"; } < / script > < / body > < / html >

【如何使用jQuery将字符串的首字母转换为大写（）】输出如下：