How to delete an element in an array in javascript

Javascript method to delete an element in an array: First, you can define a function for the JS array object to find the position of the specified element in the array; then use to get the index of this element, use js The array's own inherent function is used to delete this element.

The operating environment of this tutorial: Windows 7 system, JavaScript version 1.8.5, DELL G3 computer.

Javascript method to delete an element in an array:

First, you can define a function for the JS array object to find the position of the specified element in the array. , that is, the index, the code is:

Array.prototype.indexOf = function(val) { 
for (var i = 0; i < this.length; i++) { 
if (this[i] == val) return i; 
} 
return -1; 
};

Then use the index to get the element, and use the js array's own inherent function to delete the element:

The code is:

Array.prototype.remove = function(val) { 
var index = this.indexOf(val); 
if (index > -1) { 
this.splice(index, 1); 
} 
};

In this way, such a function is constructed. For example, I have an array:

var emp = ['abs','dsf','sdf','fd']

If we want to delete the 'fd' in it, we can use:

emp.remove('fd');

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