如何在单击“提交”按钮时在网页上显示文本

我已经有了表单设置和所有内容。如何在单击“提交”按钮时在网页上显示文本

<head> 
<script language="javascript"> 
var i; 
function fill_Cities(i){ 
var form1 = document.getElementById("form1a"); 
document.form1aa.Cities.options.length=0; 
switch(i) 
{ 
case 0: 
form1.Cities.options[0] =new Option('calcutta','calcutta'); 
form1.Cities.options[1] =new Option('Delhi','Delhi'); 
form1.Cities.options[2] =new Option('Bombay','Bombay'); 
break; 
case 1: 
form1.Cities.options[0] =new Option('Alabama','Alabama'); 
form1.Cities.options[1] =new Option('Alaska','Alaska'); 
form1.Cities.options[2] =new Option('Arizona','Arizona'); 
form1.Cities.options[3] =new Option('Arkansas','Arkansas'); 
form1.Cities.options[4] =new Option('California','California'); 
form1.Cities.options[5] =new Option('Colorado','Colorado'); 
form1.Cities.options[6] =new Option('Connecticut','Connecticut'); 
form1.Cities.options[7] =new Option('Delaware','Delaware'); 
form1.Cities.options[8] =new Option('District of Columbia','District of Columbia'); 
form1.Cities.options[9] =new Option('Florida','Florida'); 
form1.Cities.options[10] =new Option('Georgia','Georgia'); 
form1.Cities.options[11] =new Option('Hawaii','Hawaii'); 
form1.Cities.options[12] =new Option('Idaho','Idaho'); 
form1.Cities.options[13] =new Option('Illinois','Illinois'); 
form1.Cities.options[14] =new Option('Indiana','Indiana'); 
form1.Cities.options[15] =new Option('Iowa','Iowa'); 
form1.Cities.options[16] =new Option('Kansas','Kansas'); 
form1.Cities.options[17] =new Option('Kentucky','Kentucky'); 
form1.Cities.options[18] =new Option('Louisiana','Louisiana'); 
form1.Cities.options[19] =new Option('Maine','Maine'); 
form1.Cities.options[20] =new Option('Maryland','Maryland'); 
form1.Cities.options[21] =new Option('Massachusetts','Massachusetts'); 
form1.Cities.options[22] =new Option('Michigan','Michigan'); 
form1.Cities.options[23] =new Option('Minnesota','Minnesota'); 
form1.Cities.options[24] =new Option('Mississippi','Mississippi'); 
form1.Cities.options[26] =new Option('Montana','Montana'); 
form1.Cities.options[27] =new Option('Nebraska','Nebraska'); 
form1.Cities.options[28] =new Option('Nevada','Nevada'); 
form1.Cities.options[29] =new Option('New Hampshire','New Hampshire'); 
form1.Cities.options[30] =new Option('New Jersey','New Jersey'); 
form1.Cities.options[31] =new Option('New Mexico','New Mexico'); 
form1.Cities.options[32] =new Option('New York','New York'); 
form1.Cities.options[33] =new Option('North Carolina','North Carolina'); 
form1.Cities.options[34] =new Option('North Dakota','North Dakota'); 
form1.Cities.options[35] =new Option('Ohio','Ohio'); 
form1.Cities.options[36] =new Option('Oklahoma','Oklahoma'); 
form1.Cities.options[37] =new Option('Oregon','Oregon'); 
form1.Cities.options[38] =new Option('Pennsylvania','Pennsylvania'); 
form1.Cities.options[39] =new Option('Rhode Island','Rhode Island'); 
form1.Cities.options[40] =new Option('South Carolina','South Carolina'); 
form1.Cities.options[41] =new Option('South Dakota','South Dakota'); 
form1.Cities.options[42] =new Option('Tennessee','Tennessee'); 
form1.Cities.options[43] =new Option('Texas','Texas'); 
form1.Cities.options[44] =new Option('Utah','Utah'); 
form1.Cities.options[45] =new Option('Vermont','Vermont'); 
form1.Cities.options[46] =new Option('Virginia','Virginia'); 
form1.Cities.options[47] =new Option('Washington','Washington'); 
form1.Cities.options[48] =new Option('West Virginia','West Virginia'); 
form1.Cities.options[49] =new Option('Wisconsin','Wisconsin'); 
form1.Cities.options[50] =new Option('Wyoming','Wyoming'); 

break; 
case 2: 
form1.Cities.options[0] =new Option('Essex','Essex'); 
form1.Cities.options[1] =new Option('London','London'); 
form1.Cities.options[2] =new Option('Perth','Perth'); 
} 
} 
</script> 
</head> 

<form name="form1aa" method="post" action="" id="form1a" > 
<select name="country" onchange=" fill_Cities (document.form1aa.country.selectedIndex); "> 
<option value="India">India</option> 
<option value="U.S.A">U.S.A</option> 
<option value="United Kingdom">United Kingdom</option> 
</select> 
<select name="Cities"> 
</select> 
</form>

我想点击一个提交按钮，用户选择一个城市来呈现一些文本后。优选地，在网页而不是单独的对话框中。

<input type="submit" />

我知道如何创建一个提交按钮，但我不知道如何将其链接到城市形式和显示文本。

来源

2011-09-18 SS'

你想显示什么短信？你的问题有太多我们不需要的代码，我们没有足够的信息。 –

只有一行文字，如Pikmin。不过，这对每个城市都是独一无二的。 –

添加到您现有的JS代码：

form1.addEventListener('submit', function() { 
    // Here you can add success message showing-code 
    // like: document.getElementById("div_with_message").style.display = 'block'; 
    return false; // return false to prevent the browser from submitting. Assuming that is what you want. 
});

来源

2011-09-18 20:40:02 Znarkus

你可以使用以下方法来获得城市的选定值保持下拉，然后根据需要在应用程序/页面使用此值：

var selectedValue = form1.Cities.options[form1.Cities.selectedIndex].value;

而且这是可以做到的onsubmit的形式。事情是这样的：

注册提交功能： form1.onsubmit=submitForm;

函数定义：

function submitForm() 
{ 
var selectedValue = form1.Cities.options[form1.Cities.selectedIndex].value; 
alert('value = ' + selectedValue); // for sample. change as you like 
}

来源

2011-09-18 20:44:15 Saket

如何在单击“提交”按钮时在网页上显示文本

回答

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