var num = document.getElementById
时间: 2023-10-26 13:24:28 浏览: 46
根据代码中的引用[2],"var num = document.getElementById"是JavaScript中获取特定ID元素的方法。这段代码中通过使用getElementById方法,将ID为"zhi"的input元素赋值给变量num。也就是说,通过这段代码可以获取到ID为"zhi"的input元素对象。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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