DOMTokenList.length

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The length read-only property of the DOMTokenList interface is an integer representing the number of objects stored in the object.

بنية الجملة

tokenList.length;

القيمة العائدة

تُعيد رقم صحيح.

أمثلة

في المثال التالي نقوم بإسترداد قيمة الـ classes الموضوعة داخل <span> element as a DOMTokenList using Element.classList, then write the length of the list to the <span>'s Node.textContent.

أولاً، الـ HTML:

<span class="a b c"></span>

الآن الـ JavaScript:

var span = document.querySelector("span");
var classes = span.classList;
var length = classes.length;

span.textContent = 'classList length = ' + length;

نتيجة الكود ستكون بالشكل التالي:

الخصائص

Specification Status Comment
DOM
The definition of 'length' in that specification.
Living Standard Initial definition

دعم المتصفحات

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
lengthChrome Full support 1Edge Full support 12Firefox Full support 50IE ? Opera Full support YesSafari Full support 5.1WebView Android Full support YesChrome Android Full support YesFirefox Android Full support 50Opera Android Full support YesSafari iOS Full support 5.1Samsung Internet Android Full support Yes

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown