[ACCEPTED]-Programmatically control breakpoints in Javascript?-breakpoints
First you could add a call to a function 16 like __checkDebug(); which will check for 15 a global (or semi-global) variable and when 14 said variable is true, call debugger.
function __checkDebug() {
if (debugme) debugger;
}
all 13 of your functions you're concerned about 12 debugging would be like so:
function foo() {
__checkDebug();
//.... whatever foo was gonna do.
}
You can then 11 take it a little further and dynamically 10 decorate functions while the code is being 9 executed like so:
Function.prototype.debug = function(){
var fn = this;
return function(){
if (debugme) debugger;
return fn.apply(this, arguments);
};
};
foo = foo.debug();
now any time foo is called 8 it will call debugger if the debugme variable 7 is truthy.
Another option would be to build 6 a javascript build system that injects the 5 call after every function declaration - this 4 requires a syntax parser but if you're only 3 looking to modify functions a simple tokenizer 2 for that use case is pretty easy to write 1 - but I'll leave that up to you.
You can use debugger; in code to make breakpoint 2 for firebug. For example:
alert('1');
debugger;
alert('2');
And firebug automatically 1 stops on this keyword.
Have a look at the FireBug functions debug(fn) & undebug(fn) names 2 which set a breakpoint on the first line 1 of the named function.
See point #6:
http://michaelsync.net/2007/09/30/firebug-tutorial-script-tab-javascript-debugging
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