在线手册

  • met document getelementsbytagname

    HTML DOM getElementsByTagName() Method Document Object Example Get all elements in the document with the specified tag name: var x = document.getElementsByTagName("LI"); Try it yourself » More "Try it ...

  • met document queryselector

    HTML DOM querySelector() Method Document Object Example Get the first element in the document with class="example": document.querySelector(".example"); Try it yourself » More "Try it Yourself" examples ...

  • met document queryselectorall

    HTML DOM querySelectorAll() Method Document Object Example Get all elements in the document with class="example": var x = document.querySelectorAll(".example"); Try it yourself » More "Try it Yourself ...

  • met document removeeventlistener

    HTML DOM removeEventListener() Method Document Object Example Remove a "mousemove" event that has been attached with the addEventListener() method: // Attach an event handler to the documentdocument.addEventListener(& ...

  • met element addeventlistener

    HTML DOM addEventListener() Method Element Object Example Attach a click event to a <button> element. When the user clicks on the button, output "Hello World" in a <p> element with id="demo": ...

  • met element getelementsbytagname

    HTML DOM getElementsByTagName() Method Element Object Example Change the HTML content of the first <li> element (index 0) in a list: var list = document.getElementsByTagName("UL")[0]; list.getElementsByTagName(" ...

  • met element queryselector

    HTML DOM querySelector() Method Element Object Example Change the text of the first child element with class="example" in a <div> element: var x = document.getElementById("myDIV");x.querySelector(".example& ...

  • met element queryselectorall

    HTML DOM querySelectorAll() Method Element Object Example Set the background color of the first element with class="example" inside of a <div> element: // Get the element with id="myDIV" (a div), then get ...

  • met element removeeventlistener

    HTML DOM removeEventListener() Method Element Object Example Remove a "mousemove" event that has been attached with the addEventListener() method: // Attach an event handler to <div>document.getElementById(" ...

  • prop anchor href

    ... Get the URL of a link: var x = document.getElementById("myAnchor").href; The result of x will be: //www.w3schools.com/js/ Try it yourself » Example Another example of how to get the URL of a link (a relative URL): var x ...

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