chrome 开发工具和 Firefox 开发工具有什么不同？

Question

Im new in JavaScript and I wrote this js code on console:`

    function test (){} 
    var a1 = new test();
     a1;//chrome dev-tool test()
     a1;// firefox dev-tool : object {}
`

and run that on chrome dev-tool and Firefox dev-tool and I saw different results .

1.in chrome w: test{}
2.in Firefox: object{}

Answer 1

chrome is essentially saying {} is an empty object that was constructed by a function with name test.Firefox is saying {} is an empty object of general construction from Object.the subtle difference is that Chrome is actively tracking,as an internal property,the name of the actual function that did the construction, whereas other browses don t track that additional information.