Question

如何为我的函数添加另一个条件，另一个文本字段以及如何使这段代码更简单

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Answer 1

下面的代码将更简单，更容易添加任何新条件：

var fs = require('fs');
var path = require('path');
var execSync = require('child_process').execSync;

// Error when no filename argument provided.
if (!process.argv[2]) {
  console.log('\x1b[31mERR!\x1b[0m Trailing filename arg must be provided.');
  process.exit(1);
}

var fileName = process.argv[2];
var srcPath = path.join('sass', fileName) + '.scss';

// Check source .scss file exists.
if (!fs.existsSync(srcPath)) {
  console.log('\x1b[31mERR!\x1b[0m Path cannot be found: %s', srcPath);
  process.exit(1);
}

// Path to node-sass executable in node_modules directory.
var executablePath = path.join('node_modules', '.bin', 'node-sass');

// Destimation path for resultant .css file.
var destPath = path.join('css', fileName) + '.css';

// The command to be invoked.
var cmd = executablePath + ' ' + srcPath + ' ' + destPath + ' -w';

// Execute the command.
execSync(cmd, {
  cwd: process.cwd()
});

Answer 2

func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool

{
    if textField == textField as? SkyFloatingLabelTextField && (!textField.text.containsString("@") || textField.text.characters.count    < 3 )
    {
            floatingLabelTextField.errorMessage = "Invalid email"
    }
    else
    {
        floatingLabelTextField.errorMessage = ""
    }

return true
}

您可以先检查文本字段是否为您选择的文本字段，并且在相同条件下您还可以检查电子邮件验证。

如何在此函数中添加另一个条件

2 个答案: