Jquery function $.post executes an unresponsive solution under javasciprt

In the process of writing javascirpt program, the $. Post method is used to send data if the characters in the data contain '< 'will cause $.post to fail to execute successfully.

 
var jsonstr='{"value":"abcd<efg"}'; 
$.post( 
url, 
{ "jsonstr": jsonstr }, 
function (data, status) { 
}); 

It needs to be escaped before it can be used. Once escaped using the following transferredChars function, it can be executed by passing the data $.post.

This function USES '< 'and' > 'respectively replaced by '< 'and' > '.

 
transferredChars=function (htmlChars) { 
var tcs = htmlChars.replace(/</g, "<"); 
tcs = tcs.replace(/>/g, ">"); 
return tcs; 
} 

 
var jsonstr='{"value":"abcd<efg"}'; 
jsonstr=transferredChars(jsonstr); 
$.post( 
url, 
{ "jsonstr": jsonstr }, 
function (data, status) { 
}); 

The jquery version used is 1.7.1.min