Show a div onclick and hide the image that trigger

问题:

I would like to use the following code to display a hidden div onclick, but then when the it is displayed, I want the image that I used to trigger it to disappear. Here is what I have so far:

HTML:

<img src="Icons/note_add.png" onclick="show('comment')"/>&nbsp;&nbsp;<div id="comment" style="float:left;display:none;"><textarea name="textfield6" cols="30" rows="2" id="textfield4" class="text"></textarea>&nbsp;<a href="#" class="buttonintable">Submit</a></div>

JS:

function show(target){
document.getElementById(target).style.display = 'block';
}
function hide(target){
document.getElementById(target).style.display = 'none';
}

How do adjust this to hide the element that fired it?

回答1:

Jimmy's answer will work, however to get it to show back up (I assume you want that) you should add an id to the image tag... The following should work.

<img id="clickMeId" src="Icons/note_add.png" onclick="show('comment')"/>&nbsp;&nbsp;<div id="comment" style="float:left;display:none;"><textarea name="textfield6" cols="30" rows="2" id="textfield4" class="text"></textarea>&nbsp;<a href="#" class="buttonintable">Submit</a></div>

function show(target){
document.getElementById(target).style.display = 'block';
document.getElementById("clickMeId").style.display = 'none';
}
function hide(target){
document.getElementById(target).style.display = 'none';
document.getElementById("clickMeId").style.display = 'block';
}

回答2:

[edited]

Change the function to this:

function show(this, target){
    document.getElementById(target).style.display = 'block';
    this.style.display = 'none';
}

And the onclick attribute to this:

<img onclick="show(this, 'comment')" />

回答3:

I rather simplify the context to highlight what matters, inspired by Chris's answer:

<img id="clickMeId" onclick="show('comment'); hide('clickMeId')" alt="click me">

<div id="comment" style="display:none;"> yada yada </div>

<script>
  function show (toBlock){
    setDisplay(toBlock, 'block');
  }
  function hide (toNone) {
    setDisplay(toNone, 'none');
  }
  function setDisplay (target, str) {
    document.getElementById(target).style.display = str;
  }
</script>

回答4:

Send a second parameter (this) on the "onclick", that would be the image element itself

<img src="Icons/note_add.png" onclick="show('comment', this)"/>

then the function would apply a "display none" to it:

function show(target, trigger){
   document.getElementById(target).style.display = 'block';
   trigger.style.display = "none"
}

But all of this is obtrusive Javascript code, I would recommend you use unobtrusive JS code.

回答5:

Using jquery this is easy. $("#yourdivid").hide();