First to network location to download the Xpath - helper plug-in:
Xpath - helper plug-in network backup download address
The extracted code: 4 wk6
And then download the xpath - helper. Contents file suffix to xpath - helper. Zip, into Google browser extensions,
Extension in the Google browser corner - & gt; Click on the three points - & gt; More tools - & gt; Add-in
Restart the Google browser (also need to restart the page), started in the shortcut Ctrl + Shift + X Xpath - helper (note is X), if use shortcuts no reaction may be a shortcut conflicts, need to manually change,
Open and close the xpath helper shortcuts are: Ctrl + Shift + X,
After open as shown: is a form of black, on the left shows the query, display the result on the right,
Hold down CTRL + shift, and then move the mouse can choose elements on a page, the selected element will show different color, is the value of an xpath query window display, choose after let go of the CTRL and shift keys,
Xpath helper in addition to being able to get the page elements xpath address, also can validate user write xpath address is correct, the query window can manually input and modify the xpath addresses,
How to determine the input address is correct:

1, result window displays the corresponding content, rather than null

2, the corresponding element in the page will turn into yellow

Instructions for the composite above two points, xpath by the way,