CODEWITHSUNDEEP
javascriptangular
Undefitied
Undefitied

Reputation: 747

Angular 2 - add attribute in template based on input value

I want add required to input only if it was set in input.

<input-block 
    name="formName" 
    label="my label" 
    placeholder="test" 
    required
></input-block>

Component:

@Component({
    selector: 'input-block',
    inputs: ['name', 'label', 'placeholder', 'required'],
    template: `
        <label class="input-block">
            <span class="name">{{label}}</span>
            <input type="text" 
                name="{{name}}"
                placeholder="{{placeholder}}"
                <!-- no idea: {{required ? 'required : ''}} -->
            >
        </label>
    `
})

Upvotes: 4

Views: 2533

Answers (1)

kit
kit

Reputation: 4920

try something like that

<input type="text" 
        #myInput
        name="{{name}}"
        placeholder="{{placeholder}}"
        [attr.required]="myInput.value ? "required" : null">

Upvotes: 5

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