Question

想知道是否可以将以下内容简化为一个变量定义：

var gpaEarned = '%%PATTERN:gpa%%'; //value for gpa is passed in dynamically
var gpa = gpaEarned.replace("Less than 2.0","1.9").replace("2.0-2.4","2.0").replace("2.5-2.74","2.5").replace("2.74-2.9","2.74").replace("3.0-3.4","3.0").replace("3.5 or Higher","3.5");

我希望做到这样的事情，如果有可能的话：

var gpa = '%%PATTERN:gpa%%'.replace("Less than 2.0","1.9");

其中'%% PATTERN：gpa %%'是动态传递的值，该值的输出是字符串。此代码位于DFP广告管理系统中的广告素材内。

Answer 1

可以在JavaScript中的一个语句中声明多个变量。

var one = 1;
var two = 2;
var three = 3;

与

相同

var one = 1, two = 2, three = 3;

...所以在你的情况下你可以用一个声明声明：

var gpaEarned = '%%PATTERN:gpa%%', gpa = gpaEarned.replace("Less than 2.0","1.9").replace("2.0-2.4","2.0").replace("2.5-2.74","2.5").replace("2.74-2.9","2.74").replace("3.0-3.4","3.0").replace("3.5 or Higher","3.5");

如果你不需要任何gpaEarned var，你也可以通过声明一个变量来做到这一点。这也是有效的：

var gpa = '%%PATTERN:gpa%%'.replace("Less than 2.0","1.9").replace("2.0-2.4","2.0").replace("2.5-2.74","2.5").replace("2.74-2.9","2.74").replace("3.0-3.4","3.0").replace("3.5 or Higher","3.5");

将Javascript变量简化为单个语句？

1 个答案: