单击按钮时如何运行脚本 [英] How to run script when a button is clicked
问题描述
您好,我正在为我制作的表单运行一些字段输入值的总和和乘法脚本。我怎样才能让这个脚本在点击按钮上运行,以便在用户输入新值后,他们可以点击更新表单按钮来运行计算脚本并更新总金额。
< script>
$ b var $ form = $('#contactForm'),
$ summands = $ form.find('。sum1'),
$ sumDisplay = $('#itmttl );
$ b $ form.delegate('。sum1','change',function()
{
var sum = 0;
$ summands.each(function( )
{
var value = Number($(this).val());
if(!isNaN(value))sum + = value;
});
$ sumDisplay.val(sum);
});
函数乘(一,二){
if(one&& two){
this.form。 elements.tax.value = 1 * 2;
} else {
this.style.color ='blue';
}
}
< / script>
定义一个函数并将您想运行的代码在里面。
var doStuff = function(){
//在这里做一些事
};
选择您的按钮并在点击时调用该功能。如果您使用的是 A
或 BUTTON
标签,您可能想要阻止默认操作在这个例子中。
$ b $ pre $ $('。button')。on('click',function(event){
doStuff();
event.preventDefault();
});
这假设您使用的是jQuery 1.7 +。
Hi I'm running a sum and multiplication script for some field input values to a form i made. How can I get this script to run on a button click so that after a user enters a new value they can click a update form button to run the calculations script and update the total sum.
<script>
var $form = $('#contactForm'),
$summands = $form.find('.sum1'),
$sumDisplay = $('#itmttl');
$form.delegate('.sum1', 'change', function ()
{
var sum = 0;
$summands.each(function ()
{
var value = Number($(this).val());
if (!isNaN(value)) sum += value;
});
$sumDisplay.val(sum);
});
function multiply(one, two) {
if(one && two){
this.form.elements.tax.value = one * two;
} else {
this.style.color='blue';
}
}
</script>
Define a function and put the code you want to run inside it.
var doStuff = function () {
// do some stuff here
};
Select your button and call that function on click. If you're using an A
or BUTTON
tag you may want to prevent the default action, which I've included in this example.
$('.button').on('click', function (event) {
doStuff();
event.preventDefault();
});
This assumes that you're using jQuery 1.7+.
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