在线手册

  • jsref obj array

    ... multiple values in a single variable: var cars = ["Saab", "Volvo", "BMW"]; Array indexes are zero-based: The first element in the array is 0, the second is 1, and so on. For a tutorial about Arrays, read our ...

  • jsref prototype array

    ... Try it yourself » Definition and Usage The prototype constructor allows you to add new properties and methods to the Array() object. When constructing a property, ALL arrays will be given the property, and it's value, as default. When ...

  • jsref lastindexof array

    ... at the specified position, or at the end if no start position is specified, and end the search at the beginning of the array. Returns -1 if the item is not found. If the item to search for is present more than once, the lastIndexOf method returns ...

  • jsref slice array

    ... starting at the given start argument, and ends at, but does not include, the given end argument. Note: The original array will not be changed. Browser Support The numbers in the table specify the first browser version that fully supports the ...

  • jsref valueof array

    ... and Usage The valueOf() method returns the array. This method is the default method of the array object. Array.valueOf() will return the same as Array Note: This method will not change the original array. Browser Support The numbers in the ...

  • jsref obj array

    ... var cars = ["Saab", "Volvo", "BMW"]; 第一个数组元素的索引值为 0,第二个索引值为 1,以此类推。 更多有关JavaScript Array参考手册请参考 JavaScript Array 对象手册。 Array 对象属性 方法 描述 concat() 连接两个或更多的数组,并返回结果。 every() 检测数值元素的每个元素是否都符合条件 ...

  • jsref indexof array

    ... at the specified position, or at the beginning if no start position is specified, and end the search at the end of the array. Returns -1 if the item is not found. If the item is present more than once, the indexOf method returns the position of ...

  • jsref length array

    ... length Yes Yes Yes Yes Yes Syntax Return the length of an array: array.length Set the length of an array: array.length=number Technical Details Return Value: A Number, representing the number ...

  • jsref valueof array

    ... ", "Mango"]; var v=fruits.valueOf();  fruits.valueOf()与 fruits返回值一样。 v输出结果为: Banana,Orange,Apple,Mango 尝试一下 » 定义和用法 valueOf() 方法返回 Array 对象的原始值。 该原始值由 Array 对象派生的所有对象继承。 valueOf() 方法通常由 JavaScript 在后台自动调用,并不显式地出现在代码中。 注意: ...

  • jsref constructor array

    ... to the function, not the name of the function: For JavaScript arrays the constructor property returns function Array() { [native code] } For JavaScript numbers the constructor property returns function Number() { [native code] } For JavaScript ...

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