Javascript 数组警报-前端问题

Javascript Array Alert(Javascript 数组警报)

本文介绍了Javascript 数组警报的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是 Javascript 新手.

Im new to Javascript.

我正在尝试编写这四个按钮.我目前在做第二个.我编写了一个数组.但是当我点击按钮时，它会替换页面.我想在警告框中显示数组.

Im trying to code these four buttons. I'm currently on the second one. I've coded an array. But when I click on the button, it replaces the page. I want to display the array in an alert box.

<html>
<head>
<script type="text/javascript">

function SayHello()
{
    alert("Hello World!");
}

function DumpCustomers()
{

    var aCustomers=new Array();
    aCustomers[0]="Frank Sinatra ";
    aCustomers[1]="Bob Villa ";
    aCustomers[2]="Kurt Cobain ";
    aCustomers[3]="Tom Cruise ";
    aCustomers[4]="Tim Robbins ";
    aCustomers[5]="Santa Claus ";
    aCustomers[6]="Easter Bunny ";
    aCustomers[7]="Clark Kent ";
    aCustomers[8]="Marry Poppins ";
    aCustomers[9]="John Wayne ";

    document.write(aCustomers[0]);
    document.write(aCustomers[1]);
    document.write(aCustomers[2]);
    document.write(aCustomers[3]);
    document.write(aCustomers[4]);
    document.write(aCustomers[5]);
    document.write(aCustomers[6]);
    document.write(aCustomers[7]);
    document.write(aCustomers[8]);
    document.write(aCustomers[9]);
}

function DisplayFishCounts()
{

}
function FindJonGalt()
{

}

</script>
</head>

<body>
<form name="Main">
<input type="button" id=1 onclick="SayHello();" value="Say Hi"/>
<input type="button" id=1 onclick="DumpCustomers();" value="Dump Customers"/>
<input type="button" id=1 onclick="DisplayFishCounts();" value="Display Fish Counts"/>
<input type="button" id=1 onclick="FindJonGalt();" value="Where is Jon Galt?"/>

</form>
</body>
</html>

推荐答案

如果想把数组看成数组，可以说

If you want to see the array as an array, you can say

alert(JSON.stringify(aCustomers));

而不是所有那些 document.writes.

http://jsfiddle.net/5b2eb/

但是，如果您想在弹出窗口中清晰地显示它们，每行一个，请执行以下操作:

However, if you want to display them cleanly, one per line, in your popup, do this:

alert(aCustomers.join("
"));

http://jsfiddle.net/5b2eb/1/

这篇关于Javascript 数组警报的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！