Persistent Systems UI Developer Interview Questions and Answers

Q1. Reverse a String in Javascript
Ans. 
To reverse a string in Javascript, we can use the built-in reverse() method.
• Convert the string to an array using split() method

• Use the reverse() method to reverse the array

• Convert the reversed array back to a string using join() method
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Q1. Explain difference between inline and inline block
Ans. 
Inline elements do not start on a new line and only take up as much width as necessary, while inline-block elements can have a width and height set.
• Inline elements do not start on a new line and only take up as much width as necessary

• Inline-block elements can have a width and height set

• Inline elements ignore top and bottom margins and padding, while inline-block elements respect them
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Q2. Described semantic html
Ans. 
Semantic HTML is a way of writing HTML that focuses on the meaning of the content rather than its appearance.
• Semantic HTML uses tags that clearly define the purpose of the content, such as <header>, <footer>, <nav>, <article>, <section>, <aside>, <main>.

• It helps improve accessibility for users with disabilities by providing more context to screen readers and other assistive tec...read more
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Q1. Indroduction
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Q1. React State Management
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Q2. State vs Props, Redux, Routing
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Q1. For loop fine the array value
Ans. 
Using a for loop to find a specific value in an array of strings.
• Use a for loop to iterate through the array

• Check each element to see if it matches the desired value

• Return the index of the matching element or -1 if not found
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Q2. For loop fine the array valu
Ans. 
To find array values using for loop
• Declare a variable to store the sum of array values

• Use a for loop to iterate through the array

• Access each element using array[index] syntax

• Add the element value to the sum variable

• Return the sum variable
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Q1. Diff. between let var const
Ans. 
let, var, and const are all used to declare variables in JavaScript, but they have different scopes and behaviors.
• let: block-scoped variable, can be reassigned

• var: function-scoped variable, can be reassigned

• const: block-scoped variable, cannot be reassigned, but its properties can be modified
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Q1. What's your father do..
Ans. 
My father is a software engineer who works for a tech company.
• Father is a software engineer

• Works for a tech company
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Q2. Tell me family details
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