Interpretation of CSS forced line break properties: word-break and white-space

Interpretation of CSS forced line break properties: word-break and white-space, specific code examples are required

In web development, the line break method of text content is a very common and important issues. Sometimes, we need to force wrap long text to fit the needs of the page layout or improve readability. CSS provides two properties to control the way text is wrapped, namely word-break and white-space.

1. word-break attribute:

The word-break attribute specifies where line breaks can occur. It has the following values:

• normal (default): wrap inside words or at hyphens. This is the browser's default behavior.
• break-all: Break lines inside words. If necessary, hyphens separate words.
• keep-all: No line breaks, only line breaks allowed at half-width spaces or hyphens. This property applies to non-Latin scripts.

The following is a specific code example:

<style>
  .normal {
    word-break: normal;
  }
  
  .break-all {
    word-break: break-all;
  }
  
  .keep-all {
    word-break: keep-all;
  }
</style>

<div class="normal">This is a long text. This is a long text. This is a long text.</div>
<div class="break-all">This is a long text. This is a long text. This is a long text.</div>
<div class="keep-all">This is a long text. This is a long text. This is a long text.</div>

In the above example, we defined three div elements, namely .normal, .break-all and .keep -all. By adding corresponding classes to different div elements, you can see their different behaviors when wrapping.

2. white-space attribute:

The white-space attribute is used to define how to handle whitespace characters in the element. It has the following values:

• normal (default value): The default processing method, continuous spaces, tabs or newlines will be merged into one space, and the text will wrap automatically.
• nowrap: No line breaks, consecutive spaces, tabs or newlines will be merged into one space.
• pre: Preserve the original formatting of whitespace characters and line breaks.
• pre-wrap: Preserves the original formatting of whitespace characters and allows text to wrap automatically.
• pre-line: Preserve the original format of whitespace characters. Consecutive spaces, tabs, or newline characters will be merged into one space, and the text will be allowed to wrap automatically.

The following is a specific code example:

<style>
  .normal {
    white-space: normal;
  }
  
  .nowrap {
    white-space: nowrap;
  }
  
  .pre {
    white-space: pre;
  }
  
  .pre-wrap {
    white-space: pre-wrap;
  }
  
  .pre-line {
    white-space: pre-line;
  }
</style>

<div class="normal">This is a        long text.</div>
<div class="nowrap">This is a        long text.</div>
<div class="pre">This is a        long text.</div>
<div class="pre-wrap">This is a        long text.</div>
<div class="pre-line">This is a        long text.</div>

In the above example, we defined five div elements, namely .normal, .nowrap, .pre, . pre-wrap and .pre-line. By adding corresponding classes to different div elements, you can see their different performances when handling whitespace characters and line breaks.

By using the word-break and white-space attributes, we can flexibly control the line wrapping of text according to actual needs, improving the effect of page layout and the readability of text.

Summary:

This article explains the two properties of CSS word-break and white-space, and gives specific code examples. By mastering the usage of these two attributes, we can better control the way text wraps in web development and improve user experience. Different values ​​and attribute combinations can achieve different effects, and developers can choose the appropriate attribute combination to use based on actual needs.

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