Detailed explanation of the use and function of html meter tag-HTML Tutorial-php.cn

Detailed explanation of the use and function of html meter tag

黄舟

Release： 2017-06-29 14:06:49

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Definition and usage:
tag defines the measurement (unit). Use only for measurements with known maximum and minimum values.

Tips and Comments:
Comment: The range of the measure must be defined, either in text or in the min/max attributes.
Example:

<meter min="0" max="20">5</meter>
<meter>2 out of 10</meter>
<meter>30%</meter>

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tag is a new tag in HTML5, which defines weights and measures. Use only for measurements with known maximum and minimum values. That is, the range of the measure must be defined, either in the text of the element or in the min/max attributes.

<meter min="0" max="20">5</meter>
<meter>2 out of 10</meter>
<meter>30%</meter>

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high    number    定义度量的值位于哪个点，被界定为高的值。    
low    number    定义度量的值位于哪个点，被界定为低的值。    
max    number    定义最大值。默认值是 1。    
min    number    定义最小值。默认值是 0。    
optimum    number    定义什么样的度量值是最佳的值。如果该值高于 "high" 属性，则意味着值越高越好。如果该值低于 "low" 属性的值，则意味着值越低越好。    
value    number    定义度量的值。

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You can use CSS pseudo-elements to process the default display mode (because the display methods of each browser may be different):

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Coolwp.net Demo</title>
    <style>
    .deal meter { -webkit-appearance: none; }
.deal ::-webkit-meter-bar {
    height: 1em;
    background: white;
    border: 1px solid black;
}
.deal ::-webkit-meter-optimum-value { background: green; } /* 好 */
.deal ::-webkit-meter-suboptimum-value { background: orange; } /* 凑合 */
.deal ::-webkit-meter-even-less-good-value { background: blue; }   /* 糟糕 */
 
.deal ::-moz-meter-bar {
    background: rgba(0,96,0,.6);
}</style>
</head>
<body>
 
<p>
    默认的：<meter low="69" high="80" max="100" optimum="100" value="92">A</meter>
    <meter low="69" high="80" max="100" optimum="100" value="72">C</meter>
    <meter low="69" high="80" max="100" optimum="100" value="52">E</meter>
</p>
<p class="deal">
    处理后的：<meter low="69" high="80" max="100" optimum="100" value="92">A</meter>
    <meter low="69" high="80" max="100" optimum="100" value="72">C</meter>
    <meter low="69" high="80" max="100" optimum="100" value="52">E</meter>
</p>
</body>
</html>

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Actual display effect:

Detailed explanation of the use and function of html meter tag

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