JavaScript method to delete elements with specified value from array_javascript tips

The example in this article describes how to delete elements with specified values ​​from an array using JavaScript. Share it with everyone for your reference. The specific analysis is as follows:

The following code uses two methods to delete elements of the array. The first one defines a separate function, and the second one defines a removeByValue method for the Array object. The call is very simple

Define function removeByValue to delete elements

function removeByValue(arr, val) {
  for(var i=0; i<arr.length; i++) {
    if(arr[i] == val) {
      arr.splice(i, 1);
      break;
    }
  }
}
var somearray = ["mon", "tue", "wed", "thur"]
removeByValue(somearray, "tue");
//somearray will now have "mon", "wed", "thur"

Add the corresponding method to the array object, and the call becomes easier. Directly call the removeByValue method of the array to delete the specified element

Array.prototype.removeByValue = function(val) {
  for(var i=0; i<this.length; i++) {
    if(this[i] == val) {
      this.splice(i, 1);
      break;
    }
  }
}
var somearray = ["mon", "tue", "wed", "thur"]
somearray.removeByValue("tue");
//somearray will now have "mon", "wed", "thur"

I hope this article will be helpful to everyone’s JavaScript programming design.