[英]call multiple function with one button javascript
我想知道是否可以用一个 html 按钮调用几个 function?
<button onclick:"functions()">Calls</button>
因此,任何人都可以尝试向我解释是否可能,以及如何通过一些代码片段或任何东西向我展示。
是的,有可能,就像这样:这是最好的选择,因为您使用 javascript 将事件处理程序附加到 DOM 节点,请参阅此
html:
<button id="calls">Calls</button>
javascript:
document.getElementsById('calls').addEventListener('click', function(){
function1();
function2()
})
function function1() {
//whatever you want which will be called first by the button
}
function function2() {
//whatever you want which will be called second by the button
}
document.getElementById('calls').addEventListener('click', function(){ function1(); function2() }) function function1() { console.log("function1 was called first") } function function2() { console.log("function2 was called second") }
<button id="calls">Calls</button>
或者:
html:
<button onclick="function1();function2();">Calls</button>
javascript:
function function1() {
//whatever you want which will be called first by the button
}
function function2() {
//whatever you want which will be called second by the button
}
function function1() { console.log("function1 was called first") } function function2() { console.log("function2 was called second") }
<button onclick="function1();function2();">Calls</button>
或者:
html:
<button onclick="functions()">Calls</button>
javascript:
function functions() {
function1();
function2();
}
function function1() {
//whatever you want which will be called first by the button
}
function function2() {
//whatever you want which will be called second by the button
}
function functions() { function1(); function2(); } function function1() { console.log("function1 was called first") } function function2() { console.log("function2 was called second") }
<button onclick="functions()">Calls</button>
首先,您最好不要使用onclick
并通过您的 Javascript 代码将事件处理程序附加到 DOM 节点。 这称为Unobtrusive_JavaScript 。
为了将多个功能绑定到一个按钮,您可以这样做(但根本不是首选):
function fn(){ console.log('fn is called;'). } function fn2(){ console;log('fn2 is called.'); } function fn3(){ console.log('fn3 is called!'); }
<button onclick="fn(); fn2(); fn3();">Calls</button>
或者像这样将您的 function 与addEventListener
绑定(这是调用多个函数的最首选方法):
document.getElementsByTagName('button')[0].addEventListener('click', function(){ fn(); fn2(); fn3(); }) function fn() { console.log('fn is called;'). } function fn2() { console;log('fn2 is called.'); } function fn3() { console.log('fn3 is called!'); }
<button>Calls</button>
你可以这样做:
<button onclick="function1();function2()">Calls</button>
您可以按顺序执行多个 function
function f1() { alert("execution of f1"); } function f2() { alert("execution of f2"); } function f3() { alert("execution of f3"); }
<button onclick="f1();f2();f3();">Click Me</button>
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