"JS Debug" F12 Console Learning

Http://www.cnblogs.com/52cik/p/js-console-acquaintance.html

1.  console.log Output information
2. http://javascript.ruanyifeng.com/tool/console.html---console object
3. Pre class= "Hljs JavaScript" >$ //simple understanding is document.queryselector. $$ //simple understanding is document.queryselectorall. $_ //is the value of the previous expression, console object # # #. The command-line API is described. $0-$4 //is the DOM element selected in the last 5 elements panels, I'll talk about it later. Dir //is actually console.dirkeys //take the key name of the object, return the name of the array of keys values //the value of the object, the array of return values

4. breakpoints This column is to manage all breakpoints 

5. Press once F10 executes a statement