The less than operator << a=""> evaluates to true if the left value is less than the right value.
示例
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相关参考
stringify
From the MDN entry: The JSON.stringify() method converts a JavaScript object or value to a JSON string.
log
Prints a message to your browser's web console.
===
The strict equality operator === checks to see if two values are equal and of the same type.
console
Prints a message to the web browser's console.