How many types of output does javascript have?

Javascript has three types of output, namely: 1. "document.write()" output method; 2. "alert()" output method; 3. "console.log()" output method.

The operating environment of this article: windows7 system, javascript version 1.8.5, Dell G3 computer.

document.write()
alert()
console.log()

The first two methods must go back and call toString(), the proximity principle of the prototype chain

[Recommended learning: javascript Advanced Tutorial】

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