| Breakpoint Type | Use This When You Want To Pause... | 
|---|---|
| Line-of-code | On an exact region of code. | 
| Conditional line-of-code | On an exact region of code, but only when some other condition is true. | 
| DOM | On the code that changes or removes a specific(特殊的) DOM node, or its children. | 
| XHR | When an XHR URL contains a string pattern. | 
| Event listener | On the code that runs after an event, such as click, is fired. | 
| Exception | On the line of code that is throwing a caught or uncaught exception(例外). | 
| Function | Whenever a specific function is called. | 
 
        