HTML Style flexBasis用法及代碼示例

DOM風格的flexBasis屬性用於設置或返回彈性項目的初始長度。注意：如果元素不是彈性項目，則此屬性無效。

用法:

它返回flexBasis屬性：
```
object.style.flexBasis
```

它用來設置flexBasis屬性：

object.style.flexBasis = "number | auto | initial | inherit"

屬性值：

number:用於以固定長度單位或百分比來指定初始長度。
auto:用於根據柔性物品的長度設置長度。但是，如果未指定長度，則長度將取決於內容。這是默認值。
initial:這用於將此屬性設置為其默認值。
inherit:這將從其父項繼承該屬性。

示例1：使用數字值。

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        DOM Style flexBasis property 
    </title> 
  
    <style> 
        .main { 
            width:300px; 
            height:150px; 
            border:1px solid; 
            display:flex; 
        } 
          
        .main div { 
            width:250px; 
            height:150px; 
            font-size:2rem; 
            text-align:center; 
        } 
    </style> 
</head> 
  
<body> 
    <h1 style="color:green"> 
      GeeksforGeeks 
  </h1> 
    <b>DOM Style flexBasis</b> 
  
    <p> 
      Click the button to change the value 
      of the flexBasis to "100px" 
    </p> 
  
    <div class="main"> 
        <div style="background-color:green;"> 
            Geeks</div> 
        <div id="div1"
             style="background-color:lightgreen;"> 
            For</div> 
        <div style="background-color:green;"> 
            Geeks</div> 
    </div> 
  
    <button onclick="changeFlexBasis()"> 
        Change flexBasis 
    </button> 
  
    <script> 
        function changeFlexBasis() { 
            document.querySelector( 
                '#div1').style.flexBasis = "100px"; 
        } 
    </script> 
  
</body> 
  
</html>

輸出：

在單擊按鈕之前：
length-before

單擊按鈕後：
length-after

示例2：使用自動值。

<!DOCTYPE html> 
<html> 
<head> 
    <title> 
        DOM Style flexBasis property 
    </title> 
  
    <style> 
        .main { 
            width:300px; 
            height:150px; 
            border:1px solid; 
            display:flex; 
        } 
          
        .main div { 
            width:250px; 
            height:150px; 
            font-size:2rem; 
            text-align:center; 
        } 
          
        #div1 { 
            flex-basis:50px; 
        } 
    </style> 
</head> 
  
<body> 
    <h1 style="color:green"> 
      GeeksforGeeks 
  </h1> 
    <b>DOM Style flexBasis</b> 
  
    <p> 
      Click the button to change the 
      value of the flexBasis to "auto" 
    </p> 
  
    <div class="main"> 
        <div style="background-color:green;"> 
            Geeks</div> 
        <div id="div1" 
             style="background-color:lightgreen;"> 
            For</div> 
        <div style="background-color:green;"> 
            Geeks</div> 
    </div> 
  
    <button onclick="changeFlexBasis()"> 
        Change flexBasis 
    </button> 
  
    <script> 
        function changeFlexBasis() { 
            document.querySelector( 
                '#div1').style.flexBasis = "auto"; 
        } 
    </script> 
  
</body> 
  
</html>

輸出：

在單擊按鈕之前：
auto-before

單擊按鈕後：
auto-after

示例3：使用初始值。

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        DOM Style flexBasis property 
    </title> 
  
    <style> 
        .main { 
            width:300px; 
            height:150px; 
            border:1px solid; 
            display:flex; 
        } 
          
        .main div { 
            width:250px; 
            height:150px; 
            font-size:2rem; 
            text-align:center; 
        } 
          
        #div1 { 
            flex-basis:50px; 
        } 
    </style> 
</head> 
  
<body> 
    <h1 style="color:green"> 
      GeeksforGeeks 
  </h1> 
    <b>DOM Style flexBasis</b> 
  
    <p> 
      Click the button to change the  
      value of the flexBasis to "initial" 
    </p> 
  
    <div class="main"> 
        <div style="background-color:green;"> 
            Geeks</div> 
        <div id="div1" style="background-color:lightgreen;"> 
            For</div> 
        <div style="background-color:green;"> 
            Geeks</div> 
    </div> 
  
    <button onclick="changeFlexBasis()"> 
        Change flexBasis 
    </button> 
  
    <script> 
        function changeFlexBasis() { 
            document.querySelector( 
                '#div1').style.flexBasis = "initial"; 
        } 
    </script> 
  
</body> 
  
</html>

輸出：

在單擊按鈕之前：
initial-before

單擊按鈕後：
initial-after

示例4：使用繼承值。

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        DOM Style flexBasis property 
    </title> 
  
    <style> 
        #parent { 
            flex-basis:50%; 
        } 
          
        .main { 
            width:300px; 
            height:150px; 
            border:1px solid; 
            display:flex; 
        } 
          
        .main div { 
            width:250px; 
            height:150px; 
            font-size:2rem; 
            text-align:center; 
        } 
          
        #div1 { 
            flex-basis:50px; 
        } 
    </style> 
</head> 
  
<body> 
    <h1 style="color:green"> 
      GeeksforGeeks 
  </h1> 
    <b>DOM Style flexBasis</b> 
  
    <p> 
      Click the button to change the value 
      of the flexBasis to "inherit" 
    </p> 
    <div id="parent"> 
        <div class="main"> 
            <div style="background-color:green;"> 
                Geeks</div> 
            <div id="div1" 
                 style="background-color:lightgreen;"> 
                For</div> 
            <div style="background-color:green;"> 
                Geeks 
            </div> 
        </div> 
    </div> 
    <button onclick="changeFlexBasis()"> 
        Change flexBasis 
    </button> 
  
    <script> 
        function changeFlexBasis() { 
            document.querySelector( 
                '#div1').style.flexBasis = "inherit"; 
        } 
    </script> 
  
</body> 
  
</html>

輸出：
在單擊按鈕之前：
inherit-before

單擊按鈕後：
inherit-after

支持的瀏覽器：下麵列出了flexBasis屬性支持的瀏覽器：

穀歌瀏覽器
Internet Explorer 11.0
Firefox
Opera
蘋果Safari 6.1

相關用法

注：本文由純淨天空篩選整理自sayantanm19大神的英文原創作品 HTML | DOM Style flexBasis Property。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。