Javascript 如何通过单击输入按钮触发函数
我想知道如何让我的输入字段在点击输入按钮后提交它们的数据,我现在已经设置好了,这样当你输入enter时它就可以工作了 jsJavascript 如何通过单击输入按钮触发函数,javascript,button,input,meteor,Javascript,Button,Input,Meteor,我想知道如何让我的输入字段在点击输入按钮后提交它们的数据,我现在已经设置好了,这样当你输入enter时它就可以工作了 js Messages = new Meteor.Collection('messages'); if (Meteor.is_client){ ////////// Helpers for in-place editing ////////// // Returns an event_map key for attaching "ok/cancel" events
Messages = new Meteor.Collection('messages');
if (Meteor.is_client){
////////// Helpers for in-place editing //////////
// Returns an event_map key for attaching "ok/cancel" events to
// a text input (given by selector)
var okcancel_events = function (selector) {
return 'keyup '+selector+', keydown '+selector+', focusout '+selector;
};
// Creates an event handler for interpreting "escape", "return", and "blur"
// on a text field and calling "ok" or "cancel" callbacks.
var make_okcancel_handler = function (options) {
var ok = options.ok || function () {};
var cancel = options.cancel || function () {};
return function (evt) {
if (evt.type === "keydown" && evt.which === 27) {
// escape = cancel
cancel.call(this, evt);
} else if (evt.type === "keyup" && evt.which === 13) {
// blur/return/enter = ok/submit if non-empty
var value = String(evt.target.value || "");
if (value)
ok.call(this, value, evt);
else
cancel.call(this, evt);
}
};
};//added as test
Template.entry.events = {};
Template.entry.events[okcancel_events('#messageBox')] = make_okcancel_handler({
ok:function(text, event){
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: text, time: ts});
event.target.value = "";
}//if statment ends
}
});
Template.messages.messages = function () {
return Messages.find({}, { sort: {time: -1} });
};
}
html
<head>
<title>tutorial</title>
</head>
<body>
{{> entry}}
{{> messages}}
</body>
<template name="entry">
<p>
<input type="text" id="name" placeholder="your name">
<input type="text" id="messageBox" placeholder="your message">
<input type="button" id="submit">
</p>
</template>
<template name="messages">
{{#each messages}}
{{> message}} <!--echo of message template-->
{{/each}}
</template>
<template name="message">
<p><strong>{{name}}:</strong>{{message}}</p>
</template>
我做了以下操作,但仍然得到一个错误
if (Meteor.isServer) {
Template.entry.events({
'click #submit': function() {
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: $('#messageBox').val(), time: ts});
}
}
}
}
错误
这是整个js文件
Messages = new Meteor.Collection('messages');
if (Meteor.is_client){
////////// Helpers for in-place editing //////////
// Returns an event_map key for attaching "ok/cancel" events to
// a text input (given by selector)
var okcancel_events = function (selector) {
return 'keyup '+selector+', keydown '+selector+', focusout '+selector;
};
// Creates an event handler for interpreting "escape", "return", and "blur"
// on a text field and calling "ok" or "cancel" callbacks.
var make_okcancel_handler = function (options) {
var ok = options.ok || function () {};
var cancel = options.cancel || function () {};
return function (evt) {
if (evt.type === "keydown" && evt.which === 27) {
// escape = cancel
cancel.call(this, evt);
} else if (evt.type === "keyup" && evt.which === 13) {
// blur/return/enter = ok/submit if non-empty
var value = String(evt.target.value || "");
if (value)
ok.call(this, value, evt);
else
cancel.call(this, evt);
}
};
};//added as test
Template.entry.events = {};
Template.entry.events[okcancel_events('#messageBox')] = make_okcancel_handler({
ok:function(text, event){
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: text, time: ts});
event.target.value = "";
}//if statment ends
}
});
if (Meteor.isServer) {
Template.entry.events({
'click #submit': function() {
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: $('#messageBox').val(), time: ts});
}
}
});
}
Template.messages.messages = function () {
return Messages.find({}, { sort: {time: -1} });
};
}
这是整个html文件
辅导的
{{>条目}
{{>消息}
{{{#每条消息}
{{>消息}
{{/每个}}
{{name}}:{{message}
只需为单击添加一个事件处理程序(在Meteor.isClient之间)
只需为单击添加一个事件处理程序(在Meteor.isClient之间)
写这篇文章最干净的方法(如果你没有使用coffeescript,你应该这样做),是 在JavascScript中
Template.entry.events({
'click #submit' : function(event) {
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: $('#messageBox').val(), time: ts});
}
}
})
咖啡脚本
Template.entry.events
"click #submit": (event) ->
nameEntry = document.getElementById("name")
unless nameEntry.value is ""
ts = Date.now() / 1000
Messages.insert
name: nameEntry.value
message: $("#messageBox").val()
time: ts
写这篇文章最干净的方法(如果你没有使用coffeescript,你应该这样做),是 在JavascScript中
Template.entry.events({
'click #submit' : function(event) {
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: $('#messageBox').val(), time: ts});
}
}
})
咖啡脚本
Template.entry.events
"click #submit": (event) ->
nameEntry = document.getElementById("name")
unless nameEntry.value is ""
ts = Date.now() / 1000
Messages.insert
name: nameEntry.value
message: $("#messageBox").val()
time: ts
当我尝试使用您的代码时,我在上面遇到了以下错误。我将其包装在Meteor.is_client()中,但我仍然遇到了一个错误,现在是另一个错误。您上面的代码在Meteor.isServer中显示了它?很抱歉,我忘了关闭括号,现在更正了。好的,现在它的功能与以前相同,但单击按钮没有任何作用。很抱歉,文档中有一个轻微的语法更改,我已经更新了它并自己测试了它,请确保您在
Template.entry.events={}之后添加它代码>在您的代码中我在尝试使用您的代码时遇到以下错误。我将其包装在Meteor.is_client()中,但我仍然遇到一个错误,现在是另一个错误。您上面的代码在Meteor.isServer
中显示了它?很抱歉,我忘了关闭括号,现在更正了。好的,现在它的功能与以前相同,但单击按钮没有任何作用。很抱歉,文档中有一个轻微的语法更改,我已经更新了它并自己测试了它,请确保您在Template.entry.events={}之后添加它代码>在您的code@CodefendatCoffeeScript肯定在我的待办事项列表中,但我想先熟悉javascript。代码行数较少,但CoffeeScript编译器在出现错误时提供了非常基本的诊断信息。@Codefendat CoffeeScript肯定在我的待办事项列表中,但是我想让自己先熟悉javascript更多。更少的代码行,但是CoffeeScript编译器在出现错误时提供了非常基本的诊断信息。
Template.entry.events({
'click #submit' : function(event) {
var nameEntry = document.getElementById('name');
if(nameEntry.value != ""){
var ts = Date.now() / 1000;
Messages.insert({name: nameEntry.value, message: $('#messageBox').val(), time: ts});
}
}
})
Template.entry.events
"click #submit": (event) ->
nameEntry = document.getElementById("name")
unless nameEntry.value is ""
ts = Date.now() / 1000
Messages.insert
name: nameEntry.value
message: $("#messageBox").val()
time: ts