Usage examples

Wildcards

In this example, running grunt jshint:all (or grunt jshint because jshint is a multi task) will lint the project's Gruntfile as well as all JavaScript files in the lib and test directories and their subdirectores, using the default JSHint options.

// Project configuration.
grunt.initConfig({
  jshint: {
    all: ['Gruntfile.js', 'lib/**/*.js', 'test/**/*.js']
  }
});

Linting before and after concatenating

In this example, running grunt jshint will lint both the "beforeconcat" set and "afterconcat" sets of files. This is not ideal, because dist/output.js may get linted before it gets created via the grunt-contrib-concat plugin concat task.

In this case, you should lint the "beforeconcat" files first, then concat, then lint the "afterconcat" files, by running grunt jshint:beforeconcat concat jshint:afterconcat.

// Project configuration.
grunt.initConfig({
  concat: {
    dist: {
      src: ['src/foo.js', 'src/bar.js'],
      dest: 'dist/output.js'
    }
  },
  jshint: {
    beforeconcat: ['src/foo.js', 'src/bar.js'],
    afterconcat: ['dist/output.js']
  }
});

Specifying JSHint options and globals

In this example, custom JSHint options are specified. Note that when grunt jshint:uses_defaults is run, those files are linted using the default options, but when grunt jshint:with_overrides is run, those files are linted using merged task/target options.

// Project configuration.
grunt.initConfig({
  jshint: {
    options: {
      curly: true,
      eqeqeq: true,
      eqnull: true,
      browser: true,
      globals: {
        jQuery: true
      },
    },
    uses_defaults: ['dir1/**/*.js', 'dir2/**/*.js'],
    with_overrides: {
      options: {
        curly: false,
        undef: true,
      },
      files: {
        src: ['dir3/**/*.js', 'dir4/**/*.js']
      },
    }
  },
});

Ignoring specific warnings

If you would like to ignore a specific warning:

[L24:C9] W015: Expected '}' to have an indentation at 11 instead at 9.

You can toggle it by prepending - to the warning id as an option:

grunt.initConfig({
  jshint: {
    ignore_warning: {
      options: {
        '-W015': true,
      },
      src: ['**/*.js'],
    },
  },
});

Ignoring specific files

Occasionally application files and third party libraries share the same directory. To exclude third party code, but include all current and future application files, use a glob for files and specifically exclude libraries using ignores. In this example, the jQuery file is matched by the glob but subsequently ignored when JSHint does its analysis.

grunt.initConfig({
    jshint: {
        files: ['js/*.js'],
        options: {
            ignores: ['js/jquery.js']
        }
    }
});

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