Question

How to check if a string starts with another string in JavaScript

Answer 1

const s = "javascript php c++ c";
   
if (s.startsWith("java"))
    console.log("yes");
else
    console.log("no");
  
     
     
     
     
/*
run:
      
yes
      
*/

 

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Answer 2

if ("javascript html php".startsWith("java")) {
    console.log("yes");
}    
else {
    console.log("no");
}

      
      
      
/*
run:
       
yes
       
*/

 

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Answer 3

const s = "javascript css php Html";
 
if (s.lastIndexOf("java", 0) === 0) {
    console.log("yes");
}    
else {
    console.log("no");
}
      
      
      
/*
run:
       
yes
       
*/

 

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Answer 4

const s = "javascript css php Html";
 
if (s.substring(0, s.length) === s) {
    console.log("yes");
}    
else {
    console.log("no");
}

      
      
      
/*
run:
       
yes
       
*/

 

70+ SQL courses for beginners and professionals