Heim >Web-Frontend >js-Tutorial >Beispiel für das Zusammenführen und Sortieren von Arrays in JavaScript_Grundkenntnisse
Zwei Arrays kombinieren – concat()
Quellcode:
<!DOCTYPE html> <html> <body> ​ <p id="demo">点击按钮合并数组。</p> ​ <button onclick="myFunction()">点我</button> ​ <script> function myFunction() { var hege = ["Cecilie", "Lone"]; var stale = ["Emil", "Tobias", "Linus"]; var children = hege.concat(stale); var x=document.getElementById("demo"); x.innerHTML=children; } </script> ​ </body> </html>
Testergebnisse:
Cecilie,Lone,Emil,Tobias,Linus
Drei Arrays kombinieren – concat()
Quellcode:
<!DOCTYPE html> <html> <body> <script> var parents = ["Jani", "Tove"]; var brothers = ["Stale", "Kai Jim", "Borge"]; var children = ["Cecilie", "Lone"]; var family = parents.concat(brothers, children); document.write(family); </script> </body> </html>
Testergebnisse:
Jani,Tove,Stale,Kai Jim,Borge,Cecilie,Lone
Array-Sortierung (alphabetisch aufsteigend) - sort()
Quellcode:
<!DOCTYPE html> <html> <body> ​ <p id="demo">Click the button to sort the array.</p> ​ <button onclick="myFunction()">Try it</button> ​ <script> function myFunction() { var fruits = ["Banana", "Orange", "Apple", "Mango"]; fruits.sort(); var x=document.getElementById("demo"); x.innerHTML=fruits; } </script> ​ </body> </html>
Testergebnisse:
Apple,Banana,Mango,Orange
Numerische Sortierung (aufsteigende numerische Reihenfolge) – sort()
Quellcode:
<!DOCTYPE html> <html> <body> ​ <p id="demo">Click the button to sort the array.</p> ​ <button onclick="myFunction()">Try it</button> ​ <script> function myFunction() { var points = [40,100,1,5,25,10]; points.sort(function(a,b){return a-b}); var x=document.getElementById("demo"); x.innerHTML=points; } </script> ​ </body> </html>
Testergebnisse:
1,5,10,25,40,100
Numerische Sortierung (absteigende numerische Reihenfolge) – sort()
Quellcode:
<!DOCTYPE html> <html> <body> ​ <p id="demo">Click the button to sort the array.</p> ​ <button onclick="myFunction()">Try it</button> ​ <script> function myFunction() { var points = [40,100,1,5,25,10]; points.sort(function(a,b){return b-a}); var x=document.getElementById("demo"); x.innerHTML=points; } </script> ​ </body> </html>
Testergebnisse:
100,40,25,10,5,1
Kehren Sie die Reihenfolge der Elemente in einem Array um – reverse()
Quellcode:
<!DOCTYPE html> <html> <body> ​ <p id="demo">Click the button to reverse the order of the elements in the array.</p> ​ <button onclick="myFunction()">Try it</button> ​ <script> var fruits = ["Banana", "Orange", "Apple", "Mango"]; ​ function myFunction() { fruits.reverse(); var x=document.getElementById("demo"); x.innerHTML=fruits; } </script> ​ </body> </html>
Testergebnisse:
Mango,Apple,Orange,Banana