image dimension validation in angular 6
0
How to validate dimensions of image on upload.uploading images should be of 100 x 100 size.
Upload.ts
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
reader.readAsDataURL(file);
reader.onload = () => {
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
Upload.html
<div class="row">
<div class="col-md-5">
<input type="file" id="avatar"
(change)="onFileChange($event)" #fileInput name="photo">
<p style="color: red">photo should be 100 x 100 size</p>
</div>
</div>
angular file-upload asked Nov 23 '18 at 5:17
SruthiSruthi
32
add a comment |
0
How to validate dimensions of image on upload.uploading images should be of 100 x 100 size.
Upload.ts
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
reader.readAsDataURL(file);
reader.onload = () => {
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
Upload.html
<div class="row">
<div class="col-md-5">
<input type="file" id="avatar"
(change)="onFileChange($event)" #fileInput name="photo">
<p style="color: red">photo should be 100 x 100 size</p>
</div>
</div>
asked Nov 23 '18 at 5:17
SruthiSruthi
32
add a comment |
0
0
0
How to validate dimensions of image on upload.uploading images should be of 100 x 100 size.
Upload.ts
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
reader.readAsDataURL(file);
reader.onload = () => {
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
Upload.html
<div class="row">
<div class="col-md-5">
<input type="file" id="avatar"
(change)="onFileChange($event)" #fileInput name="photo">
<p style="color: red">photo should be 100 x 100 size</p>
</div>
</div>
asked Nov 23 '18 at 5:17
SruthiSruthi
32
How to validate dimensions of image on upload.uploading images should be of 100 x 100 size.
Upload.ts
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
reader.readAsDataURL(file);
reader.onload = () => {
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
Upload.html
<div class="row">
<div class="col-md-5">
<input type="file" id="avatar"
(change)="onFileChange($event)" #fileInput name="photo">
<p style="color: red">photo should be 100 x 100 size</p>
</div>
</div>
asked Nov 23 '18 at 5:17
SruthiSruthi
32
asked Nov 23 '18 at 5:17
SruthiSruthi
32
edited Nov 23 '18 at 5:23
Sruthi
asked Nov 23 '18 at 5:17
SruthiSruthi
32
asked Nov 23 '18 at 5:17
SruthiSruthi
32
asked Nov 23 '18 at 5:17
SruthiSruthi
32
32
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
0
window.URL = window.URL || window.webkitURL;
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
const img = new Image();
img.src = window.URL.createObjectURL( file );
reader.readAsDataURL(file);
reader.onload = () => {
const width = img.naturalWidth,
const height = img.naturalHeight;
window.URL.revokeObjectURL( img.src );
if( width !== 100 && height !== 100 ) {
this.error = "photo should be 100 x 100 size"
}
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
add a comment |
0
You can use reader.onload() function like below.
reader.onload = () => {
var img = new Image();
img.onload = () => {
console.log(img.width);
console.log(img.height);
// Here you can make use prevention code like shown alert
};
img.src = reader.result; // The data URL
};
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
add a comment |
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2 Answers
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active
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votes
2 Answers
2
active
oldest
votes
active
oldest
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oldest
votes
0
window.URL = window.URL || window.webkitURL;
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
const img = new Image();
img.src = window.URL.createObjectURL( file );
reader.readAsDataURL(file);
reader.onload = () => {
const width = img.naturalWidth,
const height = img.naturalHeight;
window.URL.revokeObjectURL( img.src );
if( width !== 100 && height !== 100 ) {
this.error = "photo should be 100 x 100 size"
}
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
add a comment |
0
window.URL = window.URL || window.webkitURL;
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
const img = new Image();
img.src = window.URL.createObjectURL( file );
reader.readAsDataURL(file);
reader.onload = () => {
const width = img.naturalWidth,
const height = img.naturalHeight;
window.URL.revokeObjectURL( img.src );
if( width !== 100 && height !== 100 ) {
this.error = "photo should be 100 x 100 size"
}
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
add a comment |
0
0
0
window.URL = window.URL || window.webkitURL;
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
const img = new Image();
img.src = window.URL.createObjectURL( file );
reader.readAsDataURL(file);
reader.onload = () => {
const width = img.naturalWidth,
const height = img.naturalHeight;
window.URL.revokeObjectURL( img.src );
if( width !== 100 && height !== 100 ) {
this.error = "photo should be 100 x 100 size"
}
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
window.URL = window.URL || window.webkitURL;
onFileChange(event) {
let reader = new FileReader();
if (event.target.files && event.target.files.length > 0) {
let file = event.target.files[0];
const img = new Image();
img.src = window.URL.createObjectURL( file );
reader.readAsDataURL(file);
reader.onload = () => {
const width = img.naturalWidth,
const height = img.naturalHeight;
window.URL.revokeObjectURL( img.src );
if( width !== 100 && height !== 100 ) {
this.error = "photo should be 100 x 100 size"
}
this.imagePreview = reader.result;
this.employee.photo = reader.result.split(",")[1];
};
}
}
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
answered Nov 23 '18 at 5:31
Padmapriya VishnuvardhanPadmapriya Vishnuvardhan
902311
902311
add a comment |
add a comment |
0
You can use reader.onload() function like below.
reader.onload = () => {
var img = new Image();
img.onload = () => {
console.log(img.width);
console.log(img.height);
// Here you can make use prevention code like shown alert
};
img.src = reader.result; // The data URL
};
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
add a comment |
0
You can use reader.onload() function like below.
reader.onload = () => {
var img = new Image();
img.onload = () => {
console.log(img.width);
console.log(img.height);
// Here you can make use prevention code like shown alert
};
img.src = reader.result; // The data URL
};
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
add a comment |
0
0
0
You can use reader.onload() function like below.
reader.onload = () => {
var img = new Image();
img.onload = () => {
console.log(img.width);
console.log(img.height);
// Here you can make use prevention code like shown alert
};
img.src = reader.result; // The data URL
};
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
You can use reader.onload() function like below.
reader.onload = () => {
var img = new Image();
img.onload = () => {
console.log(img.width);
console.log(img.height);
// Here you can make use prevention code like shown alert
};
img.src = reader.result; // The data URL
};
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
answered Nov 23 '18 at 5:31
Paresh GamiParesh Gami
3,46831429
3,46831429
add a comment |
add a comment |
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