我有一个文本输入和一个按钮(见下文)。当在文本框内按Enter键时,如何使用 JavaScript 触发按钮的单击事件 ?
我当前页面上已经有一个不同的提交按钮,所以我不能简单地将按钮设置为提交按钮。并且,如果从这个文本框中按下该按钮,我只希望Enter键单击此特定按钮,没有别的。
<input type="text" id="txtSearch" />
<input type="button" id="btnSearch" value="Search" onclick="doSomething();" />
在 jQuery 中,以下内容可行:
$("#id_of_textbox").keyup(function(event) {
if (event.keyCode === 13) {
$("#id_of_button").click();
}
});
$("#pw").keyup(function(event) {
if (event.keyCode === 13) {
$("#myButton").click();
}
});
$("#myButton").click(function() {
alert("Button code executed.");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Username:<input id="username" type="text"><br>
Password: <input id="pw" type="password"><br>
<button id="myButton">Submit</button>
或者在纯 JavaScript 中,以下内容可行:
document.getElementById("id_of_textbox")
.addEventListener("keyup", function(event) {
event.preventDefault();
if (event.keyCode === 13) {
document.getElementById("id_of_button").click();
}
});
document.getElementById("pw")
.addEventListener("keyup", function(event) {
event.preventDefault();
if (event.keyCode === 13) {
document.getElementById("myButton").click();
}
});
function buttonCode()
{
alert("Button code executed.");
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Username:<input id="username" type="text"><br>
Password: <input id="pw" type="password"><br>
<button id="myButton" onclick="buttonCode()">Submit</button>
然后只需编入代码即可!
<input type = "text"
id = "txtSearch"
onkeydown = "if (event.keyCode == 13)
document.getElementById('btnSearch').click()"
/>
<input type = "button"
id = "btnSearch"
value = "Search"
onclick = "doSomething();"
/>
想出这个:
<input type="text" id="txtSearch" onkeypress="return searchKeyPress(event);" />
<input type="button" id="btnSearch" Value="Search" onclick="doSomething();" />
<script>
function searchKeyPress(e)
{
// look for window.event in case event isn't passed in
e = e || window.event;
if (e.keyCode == 13)
{
document.getElementById('btnSearch').click();
return false;
}
return true;
}
</script>