Add name of user in page

[tifanny034]

Hi, I am trying to add the users name like 

Hi Sylvian,

How can I do this ? 

Thanks for your help!

[#2]

@tifanny034 Do you want to add name of user on all SharePoint pages or single page?

Unfortunately, there is no SharePoint default web part available to show the current logged in user's name OR web part which supports using custom JavaScript.

I have previously achieved this using Script editor web part for modern pages developed by @Mikael Svenson using SPFx. Here's the configuration of web part: 

Output: 

Code used: 

<p id="pWelcomeMsg"></p>

<script type="text/javascript">
	document.getElementById("pWelcomeMsg").innerHTML = "Hey " + _spPageContextInfo.userDisplayName + ", welcome to our site";
</script>

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[#3]

@ganeshsanap this worked well for me but how do I format the text that is produced?

[#4]

@nmjayhawk You can use CSS styles.

For example: You can add below styling block for showing the generated text in red color: 

<style>
    p#pWelcomeMsg { color: red }
</style>

Add such style block before your HTML and JavaScript code given in above response.

Output: 

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