将Button onClick函数转换为jQuery

Question

Currently have code in HTML, but would like to convert it to JavaScript. You can see the codes below:

I'd like to convert the following to JQuery (instead of in HTML):

<button id="1" onclick="swapStyleSheet('style1.css')">Button1</button>
<button id="2" onclick="swapStyleSheet('style2.css')">Button2</button>
<button id="3" onclick="swapStyleSheet('style3.css')">Button3</button>

The above code triggers this:

var swapStyleSheet = function (sheet) {
  document.getElementById('pagestyle').setAttribute('href', sheet);
  storebackground(sheet);
}

var storebackground = function (swapstylesheet) {
  localStorage.setItem("sheetKey", swapstylesheet); //you need to give a key and value
}

var loadbackground = function () {
  document.getElementById('pagestyle').setAttribute('href', localStorage.getItem('sheetKey'));
}

window.onload = loadbackground();

Thanks!

Answer 1

You could try something like this..

 // Here we get all the buttons var button = document.getElementsByTagName('button'); // We loop the buttons for (var i=0; i<button.length; i++){ // Here we add a click event for each buttons button[i].onclick = function() { alert("style"+this.id+".css"); //swapStyleSheet("style"+this.id+".css"); you can do it something like that; } } var swapStyleSheet = function (sheet) { //document.getElementById('pagestyle').setAttribute('href', sheet); //storebackground(sheet); } var storebackground = function (swapstylesheet) { // localStorage.setItem("sheetKey", swapstylesheet); //you need to give a key and value } var loadbackground = function () { //document.getElementById('pagestyle').setAttribute('href', localStorage.getItem('sheetKey')); } //window.onload = loadbackground(); 

 <button id="1">Button1</button> <button id="2" >Button2</button> <button id="3" >Button3</button> 

No need for JQuery

Answer 2

Looks like you are just looking for click event handlers. Here's a version using jQuery. I commented out the code dealing with the missing 'pagestyle' element and localstorage to prevent js errors in the StackOverflow snippet.

 var swapStyleSheet = function (sheet) { console.log( 'sheet: ' + sheet ); // look at the console when you press a button //document.getElementById('pagestyle').setAttribute('href', sheet); //storebackground(sheet); } var storebackground = function (swapstylesheet) { //localStorage.setItem("sheetKey", swapstylesheet); //you need to give a key and value } var loadbackground = function () { //document.getElementById('pagestyle').setAttribute('href', localStorage.getItem('sheetKey')); } window.onload = loadbackground(); $( '#1' ).on( 'click', function() { swapStyleSheet('style1.css'); }); $( '#2' ).on( 'click', function() { swapStyleSheet('style2.css'); }); $( '#3' ).on( 'click', function() { swapStyleSheet('style3.css'); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <button id="1">Button1</button> <button id="2">Button2</button> <button id="3">Button3</button> 

Answer 3

<button id="1" class='changestyle' data-stylesheet = "style1.css">Button1</button>
<button id="2" class='changestyle' data-stylesheet = "style2.css">Button2</button>
<button id="3" class='changestyle' data-stylesheet = "style3.css">Button3</button> 

jQuery

$(function(){
    $(".changestyle").on("click", function(){
        $("#pagestyle").attr("href", $(this).data('stylesheet'));
    })
})