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I have javascript code on my web page, It works for desktop, android,
However it's not working for some iPhones, each part of my code, input events, click event

Works for this iPhone models and versions:

1. Iphone 13 safari version 16.6

2. Iphone 12 safari version 16.6

3. Iphone 13 safari version 16.5.1

4. Iphone 11 safari version 16.5

But my code doesn't work for this types of iPhone:

1. Iphone 11 safari version 16.1

2. Iphone 11 safari version 16.3.1

3. Iphone  XS Max safari version 16.5.1

4. Iphone  Xr safari version 16.5.1

5. Iphone XR safari version 16.3.1

**This is my code:**


JavaScript
document.addEventListener("DOMContentLoaded", function() {
    const header = document.querySelector(".header");
    const langSelect = document.querySelector("#lang_select");
    const langList = document.querySelector(".lang_list");

    header.addEventListener("click", function(event) {
      langList.style.display = langList.style.display === "none" ? "block" : "none";
      event.stopPropagation();
    });

    document.addEventListener("click", function(event) {
      if (!langSelect.contains(event.target)) {
        langList.style.display = "none";
      }
    });

    const fieldInputs = document.querySelectorAll(".field input");

fieldInputs.forEach(function(input) {
  input.addEventListener("focus", function() {
    this.parentElement.classList.add("active");
  });

  input.addEventListener("blur", function() {
    if (this.value === "") {
      this.parentElement.classList.remove("active");
    }
  });
});

let isFirstOpen = false;
  const firstBtn = document.querySelector("#firstBtn");
  const firstDrop = document.querySelector("#firstDrop");

  firstBtn.addEventListener("click", function(event) {
    isFirstOpen = !isFirstOpen;

    if (isFirstOpen) {
      firstDrop.style.display = "block";
    } else {
      firstDrop.style.display = "none";
    }

    event.stopPropagation();
  });

  document.addEventListener("click", function(event) {
  if (
    !event.target.closest("#firstBtn") &&
    !event.target.closest("#firstDrop")
  ) {
    const firstDropElement = document.querySelector("#firstDrop");
    if (firstDropElement.style.display !== "none") {
      firstDropElement.style.display = "none";
      isFirstOpen = false;
    }
  }
});

  



 

      

  document.querySelector("#firstInput input").addEventListener("input", function() {
  const inputVal = this.value;
  let num = inputVal.replace(/[^0-9.]+/g, "");
  let regex = /^[+-]?(\d*\.\d+|\d+\.\d*)([eE][+-]?\d+)?$/;

  if (!regex.test(num)) {
    if (num === ".") {
      num = "";
    } else {
      num = num.replace(/(?<=\..*)\./, "");
    }
  }

  this.value = num;

  const firstCryptoCurrencySymbol = document.querySelector("#currency1 a").dataset.cur;
  const secondCryptoCurrencySymbol = document.querySelector("#currency2 a").dataset.cur;

  fetch("/calculateExchangeRate", {
    method: "POST",
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      firstCryptoCurrencySymbol: firstCryptoCurrencySymbol,
      secondCryptoCurrencySymbol: secondCryptoCurrencySymbol
    })
  })
  .then(res => res.json())
  .then(data => {
    const exchangeRate = data.rate;
    document.querySelector("#secondInput input").value = num * exchangeRate;
  });
});



document.querySelector("#secondInput input").addEventListener("input", function() {
  const inputVal = this.value;
  let num = inputVal.replace(/[^0-9.]+/g, "");
  let regex = /^[+-]?(\d*\.\d+|\d+\.\d*)([eE][+-]?\d+)?$/;

  if (!regex.test(num)) {
    if (num === ".") {
      num = "";
    } else {
      num = num.replace(/(?<=\..*)\./, "");
    }
  }

  this.value = num;

  const firstCryptoCurrencySymbol = document.querySelector("#currency1 a").dataset.cur;
  const secondCryptoCurrencySymbol = document.querySelector("#currency2 a").dataset.cur;

  fetch("/calculateExchangeRate", {
    method: "POST",
    headers: {
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      firstCryptoCurrencySymbol: firstCryptoCurrencySymbol,
      secondCryptoCurrencySymbol: secondCryptoCurrencySymbol
    })
  })
    .then(res => res.json())
    .then(data => {
      const exchangeRate = data.rate;
      document.querySelector("#firstInput input").value = num / exchangeRate;
    });
});




         
const optionElements = document.querySelectorAll(".option");

optionElements.forEach(function(option) {
  option.addEventListener("click", function(event) {
    if ('ontouchstart' in window || navigator.maxTouchPoints) {
      event.preventDefault();
    }

    let dataCur = this.dataset.cur;
    let imageUrl = this.querySelector(".pm_select_img img").src;
    let optionText = this.querySelector("span").textContent;

    document.querySelector("#firstBtn .pm_select_img img").src = imageUrl;
    document.querySelector("#firstBtn span").textContent = optionText;
    document.querySelector("#firstBtn").dataset.cur = dataCur;

    document.querySelector("#currency1 .pm_select_child").dataset.cur = dataCur;
    document.querySelector("#currency1 .pm_select_child").textContent = dataCur;

    document.querySelector("#hiddenInput").value = dataCur;

    document.querySelector("#amount_send1").dataset.cur = dataCur;
    document.querySelector("#amount_send1 ~ .addons").textContent = dataCur;

    const secondDataCur = document.querySelector("#currency2 a").dataset.cur;

    fetch("/calculateExchangeRate", {
      method: "POST",
      headers: {
        "Content-Type": "application/json"
      },
      body: JSON.stringify({
        firstCryptoCurrencySymbol: dataCur,
        secondCryptoCurrencySymbol: secondDataCur
      })
    })
    .then(res => res.json())
    .then(data => {
      const exchangeRate = data.rate;
      document.querySelector(".rate_info").textContent = `1 ${dataCur} = ${exchangeRate} ${secondDataCur}`;
    });

   
    event.stopPropagation();
  });
});

document.addEventListener("click", function() {
  document.querySelector("#firstDrop").style.display = "none";
});



const optionElementsFirst = document.querySelectorAll(".option1");

optionElementsFirst.forEach(function (option) {
  option.addEventListener("click", function (event) {
    if ("ontouchstart" in window || navigator.maxTouchPoints) {
      event.preventDefault();
    }

    let dataCur = this.dataset.cur;
    let imageUrl = this.querySelector(".pm_select_img img").src;
    let optionText = this.querySelector("span").textContent;

    document.querySelector("#secondBtn .pm_select_img img").src = imageUrl;
    document.querySelector("#secondBtn span").textContent = optionText;
    document.querySelector("#secondBtn").dataset.cur = dataCur;

    document.querySelector("#currency2 .pm_select_child").dataset.cur = dataCur;
    document.querySelector("#currency2 .pm_select_child").textContent = dataCur;

    document.querySelector("#hiddenInput2").value = dataCur;

    document.querySelector("#amount_send2").dataset.cur = dataCur;
    document.querySelector("#amount_send2 ~ .addons").textContent = dataCur;

    const secondDataCur = document.querySelector("#currency1 a").dataset.cur;

    fetch("/calculateExchangeRate", {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        firstCryptoCurrencySymbol: dataCur,
        secondCryptoCurrencySymbol: secondDataCur,
      }),
    })
      .then((res) => res.json())
      .then((data) => {
        const exchangeRate = data.rate;
        document.querySelector(".rate_info").textContent = `1 ${dataCur} = ${exchangeRate} ${secondDataCur}`;
      });

    document.querySelector("#secondDrop").style.display = "none";

    
    event.stopPropagation();
  });
});

document.addEventListener("click", function () {
  document.querySelector("#secondDrop").style.display = "none";
});


let isOpen = false;
const secondBtn = document.querySelector("#secondBtn");
const secondDrop = document.querySelector("#secondDrop");

secondBtn.addEventListener("click", function(event) {
  isOpen = !isOpen;

  if (isOpen) {
    secondDrop.style.display = "block";
  } else {
    secondDrop.style.display = "none";
  }

  event.stopPropagation();
});


document.addEventListener("click", function(event) {
  const secondBtn = document.querySelector("#secondBtn");
  const secondDrop = document.querySelector("#secondDrop");
  const isOpen = secondDrop.style.display !== "none";

  if (
    !event.target.closest("#secondBtn") &&
    !event.target.closest("#secondDrop")
  ) {
    if (isOpen) {
      secondDrop.style.display = "none";
    }
  }
});


  })


What I have tried:

- I was checking if I have syntax errors but, I don't have any
- I was thinking that I use some advanced functions and I remade my code with bubble but it didn't helped
- I was thinking that there is issue with click event so I added ever touch event but it didn't helped
- I tried using simulation on Mac, but in them code worked perfectly
- I used simulation in browser stack and there were my problems
Posted
Comments
Patrice T 10-Aug-23 1:08am    
No error message ? Nothing ? just don't work.
Why don't you ask Apple ?
They got support service.
Peter_in_2780 10-Aug-23 1:10am    
Try caniuse.com
There you can check specific features against versions of Safari.
Also use the dev tools in Safari, compare working and non-working versions side by side.
Richard Deeming 10-Aug-23 4:26am    
Maybe something to do with your use of the "click" event on a device that doesn't have a mouse?

But since you've provided no details of the problem, we can only guess.
raddevus 10-Aug-23 14:34pm    
Way to go! I think you have discovered the answer for this mysterious question -- most likely it is the "click" event that needs to be changed to a "touch" event.

1 solution

I had similar problem on some project before. It turned out there was some invisible div over the element that should fire an event. I've sorted out on Browserstack's iphone emulator with dev console.
 
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