Question

如何解决此代码，现在工具提示部分起作用，工具提示显示但不跟随鼠标。在jsfiddle上正常工作。

在此处https://jsfiddle.net/mgbv5tzx/212/和 HTML-Tooltip position relative to mouse pointer

<!DOCTYPE html>
<html>
<head>
  <title>Tooltip</title>
  <meta charset="UTF-8">
  <script>
function showTooltip(e) {
  var tooltip = e.target.classList.contains("coupontooltip")
      ? e.target
      : e.target.querySelector(":scope .coupontooltip");
  tooltip.style.left =
      (e.pageX + tooltip.clientWidth + 10 < document.body.clientWidth)
          ? (e.pageX + 10 + "px")
          : (document.body.clientWidth + 5 - tooltip.clientWidth + "px");
  tooltip.style.top =
      (e.pageY + tooltip.clientHeight + 10 < document.body.clientHeight)
          ? (e.pageY + 10 + "px")
          : (document.body.clientHeight + 5 - tooltip.clientHeight + "px");
}

var tooltips = document.querySelectorAll('.couponcode');
for(var i = 0; i < tooltips.length; i++) {
  tooltips[i].addEventListener('mousemove', showTooltip);
}
</script>
<style type="text/css">
.couponcode {
    color: red;
    cursor: pointer;
}

.couponcode:hover .coupontooltip {
    display: block;
}

.coupontooltip {
    position: absolute;
    white-space: nowrap;
    display: none;
    background: #ffffcc;
    border: 1px solid black;
    color: black;
    padding: 5px;
    z-index: 1000;
}
</style>

</head>
<body>
Lorem ipsum dolor sit amet, <span class="couponcode">consectetur
adipiscing<span class="coupontooltip" style="overflow: hidden;">This is a tooltip</span></span>
elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi
ut aliquip ex ea commodo consequat. Duis aute irure dolor in <span
class="couponcode">reprehenderit<span class="coupontooltip">This is
another tooltip</span></span> in voluptate velit esse cillum dolore eu
fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident,
sunt in culpa qui officia deserunt mollit anim id est <span
class="couponcode">laborum<span class="coupontooltip">This is yet
another tooltip</span></span>.
</body>
</html>

感谢帮助

Answer 1

您应该参考如何将html文件中的javascript理解：

https://www.w3schools.com/js/js_whereto.asp

我编辑您的样本，您可以参考解决方案1：使用onload调用脚本后，我将脚本放在首位

<!DOCTYPE html>
<html>
<head>
  <title>Tooltip</title>
  <meta charset="UTF-8">
  <script>
  
function showTooltip(e) {
  var tooltip = e.target.classList.contains("coupontooltip")
      ? e.target
      : e.target.querySelector(":scope .coupontooltip");
  tooltip.style.left =
      (e.pageX + tooltip.clientWidth + 10 < document.body.clientWidth)
          ? (e.pageX + 10 + "px")
          : (document.body.clientWidth + 5 - tooltip.clientWidth + "px");
  tooltip.style.top =
      (e.pageY + tooltip.clientHeight + 10 < document.body.clientHeight)
          ? (e.pageY + 10 + "px")
          : (document.body.clientHeight + 5 - tooltip.clientHeight + "px");
}

function init() {
  var tooltips = document.querySelectorAll('.couponcode');
  for(var i = 0; i < tooltips.length; i++) {
    tooltips[i].addEventListener('mousemove', showTooltip);
  }
}
</script>
<style type="text/css">
.couponcode {
    color: red;
    cursor: pointer;
}

.couponcode:hover .coupontooltip {
    display: block;
}

.coupontooltip {
    position: absolute;
    white-space: nowrap;
    display: none;
    background: #ffffcc;
    border: 1px solid black;
    color: black;
    padding: 5px;
    z-index: 1000;
}
</style>

</head>
<body onload="init();">
Lorem ipsum dolor sit amet, <span class="couponcode">consectetur
adipiscing<span class="coupontooltip" style="overflow: hidden;">This is a tooltip</span></span>
elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi
ut aliquip ex ea commodo consequat. Duis aute irure dolor in <span
class="couponcode">reprehenderit<span class="coupontooltip">This is
another tooltip</span></span> in voluptate velit esse cillum dolore eu
fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident,
sunt in culpa qui officia deserunt mollit anim id est <span
class="couponcode">laborum<span class="coupontooltip">This is yet
another tooltip</span></span>.
</body>
</html>

解决方案2：我将脚本放在正文中

<!DOCTYPE html>
<html>
<head>
  <title>Tooltip</title>
  <meta charset="UTF-8">

<style type="text/css">
.couponcode {
    color: red;
    cursor: pointer;
}

.couponcode:hover .coupontooltip {
    display: block;
}

.coupontooltip {
    position: absolute;
    white-space: nowrap;
    display: none;
    background: #ffffcc;
    border: 1px solid black;
    color: black;
    padding: 5px;
    z-index: 1000;
}
</style>

</head>
<body>
Lorem ipsum dolor sit amet, <span class="couponcode">consectetur
adipiscing<span class="coupontooltip" style="overflow: hidden;">This is a tooltip</span></span>
elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi
ut aliquip ex ea commodo consequat. Duis aute irure dolor in <span
class="couponcode">reprehenderit<span class="coupontooltip">This is
another tooltip</span></span> in voluptate velit esse cillum dolore eu
fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident,
sunt in culpa qui officia deserunt mollit anim id est <span
class="couponcode">laborum<span class="coupontooltip">This is yet
another tooltip</span></span>.
  <script>
  
function showTooltip(e) {
  var tooltip = e.target.classList.contains("coupontooltip")
      ? e.target
      : e.target.querySelector(":scope .coupontooltip");
  tooltip.style.left =
      (e.pageX + tooltip.clientWidth + 10 < document.body.clientWidth)
          ? (e.pageX + 10 + "px")
          : (document.body.clientWidth + 5 - tooltip.clientWidth + "px");
  tooltip.style.top =
      (e.pageY + tooltip.clientHeight + 10 < document.body.clientHeight)
          ? (e.pageY + 10 + "px")
          : (document.body.clientHeight + 5 - tooltip.clientHeight + "px");
}


  var tooltips = document.querySelectorAll('.couponcode');
  for(var i = 0; i < tooltips.length; i++) {
    tooltips[i].addEventListener('mousemove', showTooltip);
  }

</script>
</body>
</html>

JavaScript工具提示未随鼠标移动而移动

1 个答案: