JavaScript Tutorial - Variable Mutation And Data Corecion | Edit Variable | Promt | Alert
JavaScript Tutorial - Variable Mutation And Data Corecion | Edit Variable | Promt | Alert
JavaScript Tutorial - Variable Mutation And Data Corecion | Edit Variable | Promt | Alert
A javascript variable is named associated or assigned with a value, in other words, we can say variable allow store and manipulate data in a javascript variable.
Variable allows you to store and manipulate data in your programs. For example, the following line of javascript assign the value 3 to a variable named i, and after the program run you add 3 in variable i, and assign the result to a new variable is 6. So you can manipulate the value of pre-assign variable value.
For Example, you assign a value in a javascript variable, you can change the value in after the program.
Javascript Prompt.
Javascript prompt is displayed on the window like a dialog box that prompts the visitor or user for user input.
A prompt box is often for want the user input a value before entering or loading the page.
The prompt function in javascript that return input value if the user clicks on ok then the value is saved in variable otherwise if the user clicks on cannel on prompt dialogue the value return null.
Javascript alert().
The javascript alert function displays an alert box a specified message for ok. The javascript alert box is often used if you make sure the information given by alert comes through to the user.
like example,
alert('we are using your data for future use');
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