javascript复习1：基础
[html]<input type="button" onclick="disp_alert()" value="显示警告框" /><br />
<input type="button" value="View message" onclick="message()" /><br />
<input type="button" value="th" onclick="th()" /><br />
[javascript] view plaincopyprint?
function disp_alert()
{
alert("再次向您问好！在这里，我们向您演示" + '\n' + "如何向警告框添加折行。")
}
[javascript]
var i=0
for (i=0;i<=6;i++)
{
if (i==3){continue}
document.write("The number is " + i)
document.write("<br />")
}
[javascript]
var x
var mycars = new Array()
mycars[0] = "Saab"
mycars[1] = "Volvo"
mycars[2] = "BMW"
for (x in mycars)
{ www.zzzyk.com
document.write(mycars[x] + "<br />")
}
[javascript]
var txt=""
function message()
{
try
{
adddlert("Welcome guest!")
}
catch(err)
{
txt="此页面存在一个错误。\n\n"
txt+="错误描述: " + err.description + "\n\n"
txt+="点击OK继续。\n\n"
alert(txt)
}
}
[javascript]
function th()
{
var x=prompt("Enter a number between 0 and 10:","")
try
{
if(x>10)
throw "Err1"
else if(x<3)
throw "Err2"
}
catch(er)
{
if(er=="Err1")
alert("Error! The value is too high")
if(er == "Err2") www.zzzyk.com
alert("Error! The value is too low")
}
}
补充：web前端 , JavaScript ,
