JS string operation method example analysis

This article describes the operation method of js strings. Share it for your reference. The details are as follows:

var str="This is my first Script code.";
("The original string is:"+str+"&lt;br&gt;")
("The part after the fifth character:"+(5,-1)+"&lt;br&gt;");
("15 characters after the fifth character:"+(5,15)+"&lt;br&gt;");
("Fifth character to 15th character:"+(5,15)+"&lt;br&gt;");

I hope this article will be helpful to everyone's JavaScript programming.