Chrome devtools

There are elements in the function modules of Google developer tools （ELements）、 Console （Console）, Source code （Sources）, The Internet （Network）,Performance（ Performance panel ）,Memory（ Memory panel ）,Application（ Application panel ）,Security（ Security panel ）

 

open Chrome browser , Press F12 or Ctrl+Shift+i open

 

Elements Shows the various components of the page , The main contents are HTML+CSS+JavaScript

Network（ Network panel ）： Request from launch web page Request The information of each request resource obtained after （ Including status 、 The resource type 、 size 、 Time spent, etc ）, According to this, network performance can be optimized .Network The panel records information about each network operation on the page , Including detailed time-consuming data 、HTTP Request and response headers and Cookie.

1 controls Control from left to right （1） Monitoring network requests ;（2） Clear the network request list ;（3） Filter network resource requests ;Preserve log Log saving ;Disable cache Turn off caching information ;

 

3 Overview： Display the timeline information of the obtained resource

 

5 Summary： Displays the total number of requests 、 Data transmission volume 、 Load time information etc.

4 Requests Table： Display all the acquired resource information in the sequence of resource acquisition , The list is Name（ Resource name ）,Status（ Response state ）,Type（ Response data type ）,Size（ Response data size ）,Time（ response time ）

Click the resource name to view the details of the resource .

Preview： Preview Pane , Preview for resources ;Response： The response information panel contains the content that the resource has not been formatted ;Timing： The details of the resource request take time ;