SOURCE

var str = "aHR0cHM6Ly9qZXN0dXIuaXRjaC5pby9yaXBwbGVzCmh0dHBzOi8vZGV2aWxzZGFkLml0Y2guaW8vbXVybXVyCmh0dHBzOi8vZmVzc2l4Lml0Y2guaW8vY29ycnVwdGVkLXdvcmxkCgpodHRwczovL2NuLmFyMTAxLmN5b3Uv";

var param = atob(window.location.search.substring(1))

function decode(s){
    console.log("Original: " + s);
    console.log("Decoded: " + atob(s));
}

decode(str);
console 命令行工具 X clear

                    
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console