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Get checked checkboxes trigger event on sibling elements

Time:03-27

I have these buttons and want to click the selected ones at one time

<div >
  <input type="checkbox">
  <label><button onclick="alert('a')">button1</button></label>
</div>
<div >
  <input type="checkbox">
  <label><button onclick="alert('b')">button2</button></label>
</div>
<div >
  <input type="checkbox">
  <label><button onclick="alert('c')">button3</button></label>
</div>
<button>go</button>

I tried some jquery stuff but not made it

CodePudding user response:

Try this. In JS we are selected button with checkbox status checked and then triggering click event.

function go() {
  document.querySelectorAll('input[type="checkbox"]:checked ~ label > button').forEach(function(element){
    element.click();
  })
}
<div >
   <input type="checkbox" >
   <label ><button onclick="alert('a')">button1</button></label>
</div>
<div >
   <input type="checkbox" >
   <label ><button onclick="alert('b')">button2</button></label>
</div>
<div >
   <input type="checkbox" >
   <label ><button onclick="alert('c')">button3</button></label>
</div>
<br>
<button onclick="go()">go</button>

CodePudding user response:

Instead of just giving you some code:

  • You're not assigning any click to your GO button (Why?)
  • Add an ID to your GO button to help you query it in JS
  • Assign a class to your checkboxes as well. Like:
  • Don't use unsafe inline on* handlers. JS should be in one place only, and that's its respective tag or file. Use addEventListener instead
  • Makes no sense to use <button> inside <label> since it will steal the focus.
  • Your checkboxes are missing the value attribute. Use that attribute to store the desired value.
  • You're missing for attributes. Either add id to your INPUTs and for to your labels, or just wrap everything inside the LABEL
  • You're missing type="button" on your buttons
  • Avoid the use of prompt, alert. Replace those with a proper UI. For testing purpose use console

// DOM utility functions:

const EL = (sel, par) => (par || document).querySelector(sel);
const ELS = (sel, par) => (par || document).querySelectorAll(sel);

// Task:

const doSomething = (EL_chk) => {
  // Do something...
  console.log(EL_chk.value);
};

// Add change events to each checkbox
ELS(".chk").forEach((EL_chk) => {
   EL_chk.addEventListener("input", () => doSomething(EL_chk));
});

// On button GO click, target the checked ones
EL("#go").addEventListener("click", () => {
  ELS(".chk:checked").forEach(doSomething);
});
.btn {
  display: inline-block;
  background: #eee;
  padding: 0.3rem 0.5rem;
  border-radius: 0.2rem;
  border: 0;
}
<div >
  <label>
    <input  type="checkbox" value="a">
    <!-- DON'T USE <button> INSIDE A LABEL -->
    <span >button A</span>
  </label>
</div>

<div >
  <label>
    <input  type="checkbox" value="b">
    <span  data-click="a">button B</span>
  </label>
</div>

<div >
  <label>
    <input  type="checkbox" value="c">
    <span >button C</span>
  </label>
</div>

<button id="go"  type="button">GO</button>

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