Introduction to the console. trace () function in JavaScript _ javascript skills

This article mainly introduces the console in JavaScript. trace () function details, console. the trace () function is used to print the stack information of the function call. you can refer to the stack information of the function call when debugging JavaScript programs. trace. The following code is used as an example:

The code is as follows:

Function doTask (){
DoSubTask (1000,10000 );
}

Function doSubTask (countX, countY ){
For (var I = 0; I For (var j = 0; j }
Console. trace ();
}

DoTask ();

A console. trace () statement is inserted at the end of the doSubTask () function execution. This prints the function call stack information on the debugging console. For example, in the Firebug console:

In the Firebug console, console. trace () not only prints the function call stack information, but also displays the values of parameters in the function call.

Browser support

Like console. trace () and console. log (), it is well supported in browsers with debugging tools. all major browsers support this function.