| [整理]间接实现javascript以byref形式调用vbscript的function | ||
上一篇:[整理]vbscript中头疼的参数传递方式 |
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| 添加日期：2010/4/8 7:58:04 | 快速返回 返回列表 | 阅读4731次 |
参数和返回值以数组的形式传递。 简单来说，javascript中的数组不是真正的数组，它是Object。 传到vbscript中，不认为它是数组，不能用下标的形式引用。 所以，给Array追加了get和set方法。 同时，在vbscript中用vbs变量接收数组的值，用它执行vbs的function， 然后，再将vbs变量值set回数组。 由于数组在javascript中是引用传递，即byRef的， 所以javascript中能看到改变后的值。 <script language="vbscript"> sub xx(ax) ax=100 end sub aa=1 call xx(aa) msgbox("vb call:" & aa) function exeFunc(funcName,jsArray) msgbox "js array type:" & typename(jsArray) msgbox "array(0):" & jsArray.get(0) dim abc abc = jsArray.get(0) execute "call " & funcName & "(abc)" msgbox "vb return value:" & abc jsArray.set 0,abc end function </script> <script language="javascript"> var bb=2 xx(bb) alert("js call:" + bb) Array.prototype.get = function(prop) { return this[prop]; } Array.prototype.set = function(prop,value) { this[prop]=value; } var yy=new Array() yy[0]=2 yy[1]=3 exeFunc("xx",yy) alert("js return value:" + yy[0]) </script> ============================ 以下是javascript和vbscript中Array的对比： Earlier I alluded to the fact that JScript arrays are objects but VBScript arrays are not. What's up with that? It's kind of strange. Consider the properties of a JScript array. A Jscript array is * one dimensional. * associative; JScript arrays are indexed by strings. Numeric indices are actually converted to strings internally. * sparse: arr[1] = 123; arr[1000000] = 456; gives you a two-member array, not a million-member array. * an object with properties and methods. Whereas a VBScript array is * multi-dimensional * indexed by integer tuples * dense * not an object It is hard to come up with two things that could be more different and yet both called "array". |
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