The statements for loops provided in JavaScript are: forstatement Aforloop repeats until a specified condition evaluates tofalse. The JavaScriptforloop is similar to the Java and Cforloop. Aforstatement looks as
你也许可以使用for-in(加上保护措施)来解决问题,但是有更适当的选项可供选择,因此不必尝试。创建真正的数组有时候,你可能想将一个类似数组的对象转换为真正的数组。这样做非常简单:Use Array.from Array.from (spec) | (MDN) (ES2015+, but easily polyfilled) creates an array from an array-like object,...
尝试将您的JavaScript上传到类似jsFiddle或Codepen的地方,看看是否在那里遇到相同的问题。 - Jon P 1 做一个普通的样式元素怎么样,而不是使用fontcolor?来自MDN:String.prototype.fontcolor()已弃用。这个特性不再推荐使用。虽然一些浏览器可能仍然支持它,但它可能已经从相关的Web标准中删除,正在被删除的过程中,或者...
JavaScript provides two ways to verify equality.When you verify equality using double-equals ==, JavaScript performs much of the "type coercion" in the background. As we mentioned above, if the operands have a different type (e.g., the number 1 and the string "1"), JavaScript will ...