More on Strings

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Transcript

We are going to learn more operations that we can do on strings. So for example, if you want to print strings on different lines, so suppose that we have a variable called message. And it's equal to i programmer, prog grammar, right? And you want high to be on the first line and programmer on the next line. So what would you do? First of all, if I just bring this console dot log, if I print this normally using this console log, I am going to get a high time programmer on one line on the same line.

What if I want to print hi on the first line and programmer on the next line, what they would do is they would use backslash and then n. Now if I save and run, I am going to get high programmer. And of course here the there is some space here. I can just Do like this if I save again and run, I am going to get high programmer. So, this is how you can print strings on different lines. But there is a problem if you want to continue adding three strings for this message valuable. So for example, suppose that your string, this message is very long, and you want to continue adding gear on on here, line 345 you want to add texts, you cannot just add your text because if you do add some text here and save you and run you are going to get an error the correct way to do so is that you just close this Kurtz and then use plus sign and then on the next line you open a new codes and inside then you type whatever you want to type.

So for example, I programmer, this is a message or two You write in here semicolon and I'm going to delete all of this. Now if I save and run, I am going to get high programmer, this is a message to you. And of course you can here add a new line again, backslash n. Now if I save and run again, I'm going to get high and then programmer and then this is a message to you. And if I want to add more text on the next line, I could just use again backslash and in and add whatever I want. And also if I want to add more text here, in the in these lines, I need to use the plus and the new line I open chords and add whatever I want to add. Also there is an important important concept in strings that you need to understand which is if you are using double quotations and you want to add here single quotation so for example, You want to add hi programmer, john, instead of programmer Hi, john, you would just add single quotes or quotations here, and type john or Kate, with us, john.

And if I save and run, I'm going to get Hi, john, right. But the problem is that if I am using single quotations for the opening and closing of this string, I can I am going to be, I'm going to run into errors because let's try it. If I add single quotations at the beginning, and at the end, if now I save and run, I am going to get an error. In order to fix that error, what you would do is that I am going to use something called escaping strings, which is adding backslash before the single quote or quotation here and here as well. Now if I save and run, I am going to get hi john. So this is how you You have to add escapes, you have to escape strings in order to not run into errors.

And also there is a good way to escape strings without using this backslash is by always use double quotations at the beginning and at the end, double quotations. And in the in the inside just use single quotations. So here I'm going to use again double quotations and here double quotations. If I do so, I will I will not have to use the the escaping string by using the backslash before before the single quotations

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