Can id have spaces in html

Can CSS ids have spaces?

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits (1), hyphens (“-“), underscores (“_”), colons (“:”), and periods (“.”). As you can see, spaces are not valid.

How should CSS classes be named?

Using the BEM naming convention, element class names are derived by adding two underscores, followed by the element name.

Can classes have spaces HTML?

A class name can’t have spaces. When you have a space-separated string in your class attribute, you’re always giving your element several classes.

Can a div ID have spaces?

Like others said, you cannot use spaces for the id, but you can for the class. You should not use whitespace in the ID element, as whitespace is generally accepted as a selector combinator.

How do I name my CSS?

1. Before to think about class name, choose a good name for HTML elements.
2. Put the class name at the lowest possible level.
3. Use content to find a name.
4. Don’t use content, if the picture speaks louder.
5. Try -like suffix for better reuse.
6. Don’t use camelCase.
7. Try BEM.
8. Try more uglier.

Is Bem good for CSS?

BEM (which stands for Block-Element-Modifier) is a naming convention standard for CSS class names. It has fairly wide adoption and is immensely useful in writing CSS that is easier to read, understand, and scale.

Can you have two classes in HTML?

HTML elements can be assigned multiple classes by listing the classes in the class attribute, with a blank space to separate them. The order of classes in the class attribute is not relevant.

How do I style an ID in CSS?

A CSS ID selector uses the ID attribute of an HTML element to select one unique element on a page. To use an ID selector in CSS, you simply write a hashtag (#) followed by the ID of the element. Then put the style properties you want to apply to the element in brackets.

What is a class name in CSS?

CSS Class Names allow you to set up a CSS Class on a specific question (or action) that you can then apply CSS to in your survey’s theme settings. More technically speaking, a class is a text string that is added to the question’s outer-most div that you can then use to apply CSS to anything inside the question.

How to add a class name?

How do I use id in CSS?

Using The id Attribute. The id attribute specifies a unique id for an HTML element (the value must be unique within the HTML document). The id value can be used by CSS and JavaScript to perform certain tasks for the element with the specific id value. In CSS, to select an element with a specific id, write a hash (#) character, followed by the id of the element:

What is a div class in CSS?

The div in your code is a part of selector in CSS. In plain English it would mean select any element/tag that has a class of .form-inline and than select all div’s which are the decendants of that element and apply the following rules.

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Can IDs have spaces CSS?

Like others said, you cannot use spaces for the id, but you can for the class. You should not use whitespace in the ID element, as whitespace is generally accepted as a selector combinator.

Can element IDs have spaces?

id ‘s value must not contain whitespace (spaces, tabs etc.). Browsers treat non-conforming IDs that contain whitespace as if the whitespace is part of the ID. In contrast to the class attribute, which allows space-separated values, elements can only have one single ID value.

How do I style an ID in CSS?

To use an ID selector in CSS, you simply write a hashtag (#) followed by the ID of the element. Then put the style properties you want to apply to the element in brackets.

What is an ID selector in CSS?

The CSS id Selector The id selector uses the id attribute of an HTML element to select a specific element. The id of an element is unique within a page, so the id selector is used to select one unique element! To select an element with a specific id, write a hash (#) character, followed by the id of the element.

What is an ID attribute?

The id attribute is a unique identifier that is used to specify the document. It is used by CSS and JavaScript to perform a certain task for a unique element. In CSS, the id attribute is used using # symbol followed by id.

How do you choose a class with space?

They are called multiple class selectors. You basically just need to make sure all the class names are connected (no spaces between them) and separated with a dot. Classes will never actually have spaces in their name. In your example, that is actually two classes; boolean and optional .

Can CSS class name have space?

A class name can’t have spaces. When you have a space-separated string in your class attribute, you’re always giving your element several classes.

What elements can you add an ID to?

IDs should be unique within a page, and all elements within a page should have an ID even though it is not necessary. You can add an ID to a new JavaScript Element or a pre-existing HTML Element.

What is class and ID in CSS?

When comparing CSS class vs ID, the difference is that CSS class applies a style to multiple elements. ID, on the other hand, applies a style to one unique element. ID is also special in that you can use a special URL to link directly to an element and it’s used by JavaScript.

What is the syntax for ID attribute in CSS?

The syntax for id is: write a hash character (#), followed by an id name. Then, define the CSS properties within curly braces <>.

How to use the background property in CSS?

Why is there a space between two classes in my CSS?

Are spaces allowed in the HTML5 id attribute?

What is the background shorthand in CSS?

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Can CSS ids have spaces?

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits (4), hyphens (“-“), underscores (“_”), colons (“:”), and periods (“.”). As you can see, spaces are not valid.

Can IDS have spaces?

id ‘s value must not contain whitespace (spaces, tabs etc.). In contrast to the class attribute, which allows space-separated values, elements can only have one single ID value. Note: Using characters except ASCII letters, digits, ‘_’ , ‘-‘ and ‘.

Can an ID be a number CSS?

Since HTML5 it’s been valid to start an HTML element ID with a number. CSS simply doesn’t allow selectors to begin with a number.

Can you have spaces in class names?

A class name can’t have spaces. When you have a space-separated string in your class attribute, you’re always giving your element several classes.

What does space mean in CSS selector?

A space in a CSS selector has very special meaning. It means that the part of the selector that occurs right of the space is within (a child of) the part of the selector to the left.

Can ID attribute be a number?

Rules for Using the ID Attribute The ID must start with a letter (a-z or A-Z). All subsequent characters can be letters, numbers (0-9), hyphens (-), underscores (_), colons (:), and periods (.). Each ID must be unique within the document.

Can HTML id contain?

The HTML 4.01 spec states that ID tokens must begin with a letter ( [A-Za-z] ) and may be followed by any number of letters, digits ( 4 ), hyphens ( – ), underscores ( _ ), colons ( : ), and periods ( . ). Classnames can contain any character, and they don’t have to start with a letter to be valid.

Can CSS class have number?

It cannot start with a digit, starting with the digit is acceptable by HTML5 but not acceptable by CSS. Two hyphens followed by a number is valid.

What is an ID in CSS?

In CSS, a class is used to group more than one element, whereas an ID is used to identify a single element. A class selector is therefore used to style multiple HTML elements of the same class, while an ID selector is used to style one HTML element.

What is CSS ID selector?

The CSS id Selector The id selector uses the id attribute of an HTML element to select a specific element. The id of an element is unique within a page, so the id selector is used to select one unique element! To select an element with a specific id, write a hash (#) character, followed by the id of the element.

Do you need a space for an ID in CSS?

Are there spaces in the id attribute in HTML5?

How is the id attribute used in CSS?

Where can I apply for an ID card in Georgia?

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Can id have spaces in html

The id global attribute defines an identifier (ID) which must be unique in the whole document. Its purpose is to identify the element when linking (using a fragment identifier), scripting, or styling (with CSS).

Try it

Warning: This attribute’s value is an opaque string: this means that web authors should not rely on it to convey human-readable information (although having your IDs somewhat human-readable can be useful for code comprehension, e.g. consider ticket-18659 versus r45tgfe-freds&$@ ).

An id ‘s value must not contain whitespace (spaces, tabs, etc.). Browsers treat non-conforming IDs that contain whitespace as if the whitespace is part of the ID. In contrast to the class attribute, which allows space-separated values, elements can only have one single ID value.

Technically, the value for an id attribute may contain any character, except whitespace characters. However, to avoid inadvertent errors, only ASCII letters, digits, ‘_’ , and ‘-‘ should be used, and the value for an id attribute should start with a letter.

For example, . has a special meaning in CSS (it starts a class selector). While valid, unless you are careful to escape it when used as part of a CSS selector, it won’t be recognized as part of the element’s id . The same applies to the querySelector() and querySelectorAll() parameters, which use the same selector syntax. It is easy to forget to do this, resulting in bugs in your code that could be hard to detect.

Similarly, an id starting with a digit (E.g., 1234-322-678 ) or a hyphen followed by a digit (E.g., -123 ), though valid in HTML, may lead to problems when used in CSS, JavaScript, and Web APIs:

• CSS ID selectors accept any CSS identifier. If the id starts with a digit or one hyphen immediately followed by a digit, both the hyphen and digit must be escaped in CSS. For example, while id=»544-383-3388″ and id=»-3Pi» are valid in HTML, the id selectors must be escaped. The element with these id values can be targeted in CSS with #\35 44-383-3388 and #\2D \33 pi .
• Any valid HTML id value is valid as an attribute selector in CSS and JavaScript. The selectors [id=»544-383-3388″] and [id=»-3Pi»] are valid.
• Document.querySelector() and similar methods using CSS-selector-style queries will not find them unless you escape them. (See this page for an example.)
• Such an id is not a valid JavaScript identifier. Elements with IDs become global properties, but you cannot use non-identifier global properties as global variables — 1234 is not a global variable, and you have to use window[1234] instead to get the element with id=»1234″ . This is slightly inconvenient as you have to create the variable with an extra step: const element = window[1234] .

Specifications

Browser compatibility

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See also

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