How to split string in jquery

As a JavaScript library, jQuery provides many convenient methods to handle common front-end interactions such as operating DOM and executing AJAX. For string processing, jQuery also provides many useful methods. Among them, splitting a string into an array is a common requirement. This article will introduce how jQuery implements string splitting.

There are two methods of string splitting in jQuery: split() and replace(). These two methods will be introduced in detail below, with specific examples.

1. Split() method

The split() method is JavaScript’s own string method and has also been inherited by jQuery. This method allows us to split a string into an array based on the specified delimiter and then return the array.

Syntax: str.split(separator,limit)

Parameters:

separator: required, used to specify the separator where the string is split, which can be one character String or regular expression. If this parameter is not specified, the entire string is split into a one-element array.

limit: Optional, used to specify the maximum length of the returned array. If this parameter is set, the returned array will not exceed this limit. If this parameter is not set, the complete array is returned.

Example:

Suppose we have a comma separated string like this:

var str = "HTML,CSS,JavaScript,jQuery,AngularJS,React ";

We can use the split() method to split it into an array, as shown below:

var arr = str.split(",");
console.log( arr);

Output result:

["HTML", "CSS", "JavaScript", "jQuery", "AngularJS", "React"]

at In the above example, we use comma as the delimiter to split the string str into an array and store the array in the arr variable. The output shows that the array contains six elements, which are the six strings we got after splitting.

2. Replace() method

The replacement() method is also a method that comes with JavaScript and is inherited by jQuery. This method finds the specified text in a string and replaces it with new text. In this process, we can split the entire string into an array using delimiters and replace the elements in the array with new text when needed.

Syntax: str.replace(regexp|substr,newvalue)

Parameters:

regexp|substr: required, used to specify the string or regular expression that needs to be replaced . If this argument is a string rather than a regular expression, it can only replace the first match. If this parameter is a regular expression, it replaces all occurrences of the pattern.

newvalue: Required, used to specify the text string to be replaced or the function to generate new text.

Example:

Assuming we still use commas as delimiters, we can use the replace() method to split the string into an array and use the "-" sign to replace the commas.

var str = "HTML,CSS,JavaScript,React,Vue,Angular";
var arr = str.replace(/,/g,"-").split("-");
console.log(arr);

Output result:

["HTML", "CSS", "JavaScript", "React", "Vue", "Angular"]

In the above example, we use the regular expression /g to allow the replace() method to replace all commas. Then we split the string into an array based on "-" and store the array in the arr variable. The output is the same as the above example, indicating that the array contains six elements, that is, we have successfully split the string into six strings.

Summary:

Splitting a string into an array is a common requirement. jQuery provides two methods: split() and replace() to meet this requirement. Both methods are relatively simple to understand and offer some flexibility. In actual development, we can choose the appropriate method according to specific needs to achieve better development results.

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