javascript - 仅在选中复选框“打开”时触发 javascript 函数

Question

无论复选框是打开还是关闭，此脚本都会显示警报。它如何仅在单击复选框时显示？

$("#x").click(function() {
    alert("Ticker is has been clicked on!");
});

score 2 · Accepted Answer

您可以在函数内添加一条if语句来测试：

$("#x").click(function() {
    if (this.checked) alert("Ticker is has been clicked on!");
});

score 1 · Accepted Answer

// 使用 .is(':checked') 来检查它是否被检查！

$("#x").click(function() {
    if($(this).is(':checked')){
        alert("Ticker is has been clicked on!");
    }
});

score 0 · Accepted Answer

一个简单的if条件将为您解决问题：

$("#x").click(function(){
    if($(this).is(":checked")) {
        alert("Ticker is has been clicked on!");
    }
});

3 回答 3