The secret revolves around a simple property of XMLHttpRequest called onreadystatechange.
秘密就在于XMLHttpRequest的一个简单属性onreadystatechange。
As with expressions, avoid writing complex template statements. A method call or simple property assignment should be the norm.
和表达式一样，避免写复杂的模板语句。常规是函数调用或者属性赋值。
The results indicate that the process of copper autocatalytic plating on plastics is simple. Property of plating is stable.
结果表明：塑料自催化镀铜的工艺简单，镀层的性能稳定。
The results indicate that the process of copper autocatalytic plating on plastics is simple. Property of plating is stable.
结果表明：塑料自催化镀铜的工艺简单，镀层的性能稳定。
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