WMLScript abs() º¯Êý

abs() º¯Êý·µ»ØÒ»¸öÊýµÄ¾ø¶ÔÖµ¡£

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n = Lang.abs(x)
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n ´Óº¯Êý·µ»ØµÄ¾ø¶ÔÖµ¡£
x ¼ÆËãÕâ¸öÊýµÄ¾ø¶ÔÖµ¡£

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var a = Lang.abs(-5);
var b = Lang.abs(-3.4);

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a = 5
b = 3.4
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