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VisualizaçõesHow to make TextInput only accept up to 2 decimal places with a max value?
Here's my code snippet of a TextInput component in React-Native:
The render on the simulator looks like this:
I want to make the input field only accept decimal number <= 11.99 to mimic the highest input for inches for a person's height. In onChangeText function, I'm updating the value of the state.
Any ideas how I can implement this input bound with a max value? Do I check the value inside onChangeText and then set the values accordingly?
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Juan Pablo Isaza
2 Respostas
Responde à pergunta0
Instead of step="any", which allows for any number of decimal places, use step=".01", which allows up to two decimal places.
this question is duplicate. try this link
allow 2 decimal
·
Juan Pablo Isaza
Relatório
0
Your can check the value of the user's input in the onChangeText.
onChangeText={(value) => {
const parsedQty = Number.parseFloat(value) // Convert input value to a Float
if(Number.isNaN(parsedQty)){
setFieldValue(0) // In case user input a characters instead of a number
} else if(parsedQty >= 11.99) {
setFiledValue(11.99) // Set the value to 11.99 if the user input more than 11.99
} else if (parsedQty < 0) {
setFieldValue(0) // Set the value to 0 if the user input is below 0. You can customize this part if you want a minimum value
} else {
setFieldValue(parsedQty)
}
}}
·
Juan Pablo Isaza
Relatório
Responde à pergunta