測試javascript中函式中有return關鍵字
阿新 • • 發佈:2018-12-14
測試javascript中函式中有return關鍵字
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>測試javascript中函式中有return關鍵字</title> <link rel="stylesheet" type="text/css" href="body.css"> </head> <body> <div align="center"> <h2>測試javascript中函式中有return關鍵字</h2> <input id="number" type="text" value="0"><br><br> <input type="button" value="點選我(測試javascript中函式中有return)" onclick="test2()"> </div> <script type="text/javascript"> function test1(number) { if (number == 0) { alert("number = " + number); return; } alert("我是" + number); } function test2(){ test1(document.getElementById("number").value); document.getElementById("number").value = 'ss'; alert("我是函式test2()"); } </script> </body> </html>