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node.js中的console.timeEnd方法使用说明_node.js

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Release： 2016-05-16 16:28:04
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方法说明：

完成时间，执行 console.time 到 console.timeEnd 之间所花费的时间。

语法：

复制代码 代码如下:

console.timeEnd(label)

接收参数：

Label             与开始时间 console.log 的 label 对应

例子：

复制代码 代码如下:

console.time('100-elements');
for (var i = 0; i   ;
}
console.timeEnd('100-elements');

源码：

复制代码 代码如下:

Console.prototype.timeEnd = function(label) {
  var time = this._times[label];
  if (!time) {
    throw new Error('No such label: ' + label);
  }
  var duration = Date.now() - time;
  this.log('%s: %dms', label, duration);
};
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