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63 lines
2.0 KiB
63 lines
2.0 KiB
7 years ago
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// This implementation only tests support for interactive form validation.
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// To check validation for a specific type or a specific other constraint,
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// the test can be combined:
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// - Modernizr.inputtypes.numer && Modernizr.formvalidation (browser supports rangeOverflow, typeMismatch etc. for type=number)
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// - Modernizr.input.required && Modernizr.formvalidation (browser supports valueMissing)
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//
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(function(document, Modernizr){
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Modernizr.formvalidationapi = false;
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Modernizr.formvalidationmessage = false;
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Modernizr.addTest('formvalidation', function() {
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var form = document.createElement('form');
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if ( !('checkValidity' in form) || !('addEventListener' in form) ) {
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return false;
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}
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if ('reportValidity' in form) {
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return true;
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}
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var invalidFired = false;
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var input;
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Modernizr.formvalidationapi = true;
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// Prevent form from being submitted
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form.addEventListener('submit', function(e) {
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//Opera does not validate form, if submit is prevented
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if ( !window.opera ) {
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e.preventDefault();
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}
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e.stopPropagation();
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}, false);
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// Calling form.submit() doesn't trigger interactive validation,
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// use a submit button instead
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//older opera browsers need a name attribute
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form.innerHTML = '<input name="modTest" required><button></button>';
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Modernizr.testStyles('#modernizr form{position:absolute;top:-99999em}', function( node ) {
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node.appendChild(form);
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input = form.getElementsByTagName('input')[0];
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// Record whether "invalid" event is fired
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input.addEventListener('invalid', function(e) {
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invalidFired = true;
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e.preventDefault();
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e.stopPropagation();
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}, false);
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//Opera does not fully support the validationMessage property
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Modernizr.formvalidationmessage = !!input.validationMessage;
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// Submit form by clicking submit button
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form.getElementsByTagName('button')[0].click();
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});
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return invalidFired;
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});
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})(document, window.Modernizr);
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