JS replaces characters in a string by replacing all characters instead of the first one_javascript tips

Sometimes when replacing a string with JS, replyText= replyText.replace("aa","");

This can only replace the first aa in the string. Sometimes it is necessary to replace all aa. This method cannot be used. .

You can use the following method for reference:

Copy the code The code is as follows:

function del_html_tags(str,reallyDo,replaceWith) {
var e=new RegExp(reallyDo,"g");
words = str.replace(e, replaceWith);
return words;
}

str is the target string

reallyDo is who to replace

replaceWith is what to replace with.

var replyText="

Respectfully, respectfully, respectfully, respectfully, respectfully

Respectfully, respectfully Respectfully, respectfully, respectfully, respectfully

";

eg:

Copy code The code is as follows:

replyText= del_html_tags(replyText,"
"," ");

replyText= del_html_tags(replyText,"

","");

replyText= del_html_tags(replyText,"

","");

You can get

"Respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, respectfully, and respectfully"