Jquery trigger with call function

Question

I have button with onclick :

 <button   class="tablinks" onclick="openDiv(event, 'default')">{'TEXT_DEFAULT_SETTINGS'|tr}</button>

openDiv function:

function openDiv(evt, cityName) {
  // Declare all variables
  var i, tabcontent, tablinks;
  // Get all elements with class="tabcontent" and hide them
  tabcontent = document.getElementsByClassName("tabcontent");
  for (i = 0; i < tabcontent.length; i++) {
    tabcontent[i].style.display = "none";
  }
  // Get all elements with class="tablinks" and remove the class "active"
  tablinks = document.getElementsByClassName("tablinks");
  for (i = 0; i < tablinks.length; i++) {
    tablinks[i].className = tablinks[i].className.replace(" active", "");
  }

  // Show the current tab, and add an "active" class to the button that opened the tab
  document.getElementById(cityName).style.display = "block";
  evt.currentTarget.className += " active";
}

How can I trigger this onclick?

Answer 1

尝试：

document.getElementsByClassName("tablinks")[0].click()

Answer 2

Your code working fine unless you dont have element with default as id. Else your code ll break & give error as Uncaught TypeError: Cannot read property 'style' of null for this statement document.getElementById(cityName).style.display = "block";

See the below working example of your code:

 function openDiv(evt, cityName) { // Declare all variables var i, tabcontent, tablinks; // Get all elements with class="tabcontent" and hide them tabcontent = document.getElementsByClassName("tabcontent"); for (i = 0; i < tabcontent.length; i++) { tabcontent[i].style.display = "none"; } // Get all elements with class="tablinks" and remove the class "active" tablinks = document.getElementsByClassName("tablinks"); for (i = 0; i < tablinks.length; i++) { tablinks[i].className = tablinks[i].className.replace(" active", ""); } // Show the current tab, and add an "active" class to the button that opened the tab document.getElementById(cityName).style.display = "block"; evt.currentTarget.className += " active"; } 

 #default { display:none } 

  <button class="tablinks" onclick="openDiv(event, 'default')">{'TEXT_DEFAULT_SETTINGS'|tr}</button> <div id="default"> This is a default div </div>