JS saving, reading, line wrapping, Json conversion error handling methods_javascript skills

Exception information: Unexpected token ILLEGAL

Let’s talk about the processing method first:
1. Save:

Copy code The code is as follows:

varcont=encodeURI($("#txtMessage_Content").val()).replace(/ /g,"brHH");

2. Read:

Copy code The code is as follows :

entity[i].Contents.replace(//,">").replace(/brHH/g ,"
")

Explanation:
The main idea is the substitution method.
JS seems to be unable to capture the text directly. Press Enter and encodeURI to capture it.

Copy code The code is as follows:

replace(//,">")

This sentence deals with JS injection

Copy code The code is as follows:

replace(/brHH/g,"
")

Here is replacing the above with Enter Replace and display