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JavaScript for/in 语句循环遍历对象的属性:
var person={fname:"John",lname:"Doe",age:25}; for (xin
person) { txt=txt + person[x]; }
JavaScript try catch 的应用:
<script>
function myFunction()
{
try
{
var x=document.getElementById("demo").value;
if(x=="") throw "值为空";
if(isNaN(x)) throw "不是数字";
if(x>10) throw "太大";
if(x<5) throw "太小";
}
catch(err)
{
var y=document.getElementById("mess");
y.innerHTML="错误:" + err + "。";
}
}
</script>
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原文地址:http://www.cnblogs.com/sdya/p/4343983.html