移动端HTML5模拟长按删除事件（附代码）-

HTML:

    
    
    
    
    


    

        
长按我
        
删除
    
    

JS

let timer = null
let startTime = &＃39;&＃39;
let endTime = &＃39;&＃39;
const label = document.querySelector(&＃39;.label&＃39;)
const deleteBtn = document.querySelector(&＃39;.delete_btn&＃39;)

label.addEventListener(&＃39;touchstart&＃39;, function () {
  startTime = +new Date()
  timer = setTimeout(function () {
    deleteBtn.style.display = &＃39;block&＃39;
  }, 700)
})

label.addEventListener(&＃39;touchend&＃39;, function () {
  endTime = +new Date()
  clearTimeout(timer)
  if (endTime - startTime <700) {
    // 处理点击事件
    label.classList.add(&＃39;selected&＃39;)
  }
})

CSS

.container {
    position: relative;
    display: inline-block;
    margin-top: 50px;
}

.label {
    display: inline-block;
    box-sizing: border-box;
    width: 105px;
    height: 32px;
    line-height: 32px;
    background-color: #F2F2F2;
    color: #5F5F5F;
    text-align: center;
    border-radius: 3px;
    font-size: 14px;
}

.label.selected {
    background-color: #4180cc;
    color: white;
}

.delete_btn {
    display: none;
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%) translateY(-100%);
    color: white;
    padding: 10px 16px;
    background-color: rgba(0, 0, 0, .7);
    border-radius: 6px;
    line-height: 1;
    white-space: nowrap;
    font-size: 12px;
}

.delete_btn::after {
    content: &＃39;&＃39;;
    width: 0;
    height: 0;
    border-width: 5px;
    border-style: solid;
    border-color: rgba(0, 0, 0, .7) transparent transparent transparent;
    position: absolute;
    bottom: -9px;
    left: 50%;
    transform: translateX(-50%);
}

ps: touchstart和touchend只有在移动端设备上才有用，如果要看代码示例的话请:

• 用chrome

• F12打开调时窗

• 切换到模拟移动设备

即点击如下图:

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