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JavaScript基础教程
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<!DOCTYPE html> <html> <title>JavaScript typeof 示例 - 基础教程(div.cn)</title> <body> <p id="output"></p> <script> let x1 = {}; let x2 = ""; let x3 = 0; let x4 = false; let x5 = []; let x6 = /()/; let x7 = function(){}; document.getElementById("output").innerHTML = "x1: " + typeof x1 + "<br>" + "x2: " + typeof x2 + "<br>" + "x3: " + typeof x3 + "<br>" + "x4: " + typeof x4 + "<br>" + "x5: " + typeof x5 + "<br>" + "x6: " + typeof x6 + "<br>" + "x7: " + typeof x7; </script> </body> </html>
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