jQuery Convert Text to Uppercase/Lowercase

Easy to convert the case of web page text using jQuery code snippets. This is very useful for changing the web text style without using CSS (although there is also a CSS example below).

Use jQuery for upper and lower case conversion

//小写
$('jqueryselector').val($(this).val().toLowerCase());

//大写
$('jqueryselector').val($(this).val().toUpperCase());

Use CSS for initial letter capitalization

If you want to capitalize the initial letter of each word, you can use CSS:

.capitalise {
    text-transform: capitalize;
}

Then append it to the element:

$('jqueryselector').addClass('capitalise');

jQuery Text Conversion FAQs (FAQs)

How to convert text to uppercase using jQuery?

Converting text to capitalization using jQuery is very simple. You can use the .toUpperCase() method. Here is a simple example:

var text = "hello world";
var upperCaseText = text.toUpperCase();
console.log(upperCaseText); // 输出：HELLO WORLD

In this example, the variable text contains the string "hello world". Then use the .toUpperCase() method to convert it to uppercase.

How to convert text to lowercase using jQuery?

Yes, you can use jQuery to convert text to lowercase. The method to use is .toLowerCase(). Here is an example:

var text = "HELLO WORLD";
var lowerCaseText = text.toLowerCase();
console.log(lowerCaseText); // 输出：hello world

In this example, the variable text contains the string "HELLO WORLD". Then use the .toLowerCase() method to convert it to lower case.

How to convert input value to uppercase using jQuery?

You can use jQuery to convert input values ​​to uppercase by using the .toUpperCase() method and the .val() method. Here is an example:

$('input').on('input', function() {
  this.value = this.value.toUpperCase();
});

In this example, the .on() method is used to attach an event handler function to the "input" event. This function converts the input value to uppercase whenever the user types something in the input field.

How to convert all text in a div to uppercase using jQuery?

Yes, you can convert all text in the div to uppercase using jQuery. Here is an example:

$('div').text(function(i, text) {
  return text.toUpperCase();
});

In this example, the .text() method is used to obtain the combined text content of each element in the matching element set. It is also used to set the contents of the element. The function passed to the .text() method converts the text to uppercase.

(The remaining FAQs are omitted below because the article is too long and is repeated with the pattern of the previous questions. Some FAQs can be selectively retained or removed as needed, and the language is fine-tuned to maintain the simplicity and readability of the article.)

The above is the detailed content of jQuery Convert Text to Uppercase/Lowercase. For more information, please follow other related articles on the PHP Chinese website!