📄 5.3.html
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<html>
<title>增量运算</title>
<head>
<script>
var num1=1,num2=2;
var result1,result2,result3,result4;
result1=num1++;
result2=++num2;
result3=num1+num2;
result4=++num1+num2;
document.write("num1++=",result1,"<br>","++num2=",result2,"<br>","num1+num2=",result3,"<br>","++num1+num2=",result4,"<br>");
</script>
</head>
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