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Filename :
image-preview.js
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function previewFile(input) { "use strict"; var preview = input.previousElementSibling; var file = input.files[0]; var reader = new FileReader(); if(input.files[0].size > 1000000){ alert("Maximum file size is 1MB!"); } else { reader.onloadend = function() { preview.src = reader.result; }; if (file) { reader.readAsDataURL(file); } else { preview.src = ""; } } } function preview86DimensionsFile(input) { "use strict"; var preview = input.previousElementSibling; var file = input.files[0]; var reader = new FileReader(); if (file.type !== 'image/png') { alert("Accepted file is png."); return } var img = new Image(); img.src = window.URL.createObjectURL( file ); img.onload = function() { var width = this.naturalWidth, height = this.naturalHeight; if (height !== 86){ preview.src = ""; alert("Need to height is 86!"); return } if (width !== 86){ preview.src = ""; alert("Need to width is 86!"); return; } }; if(input.files[0].size > 1000000){ alert("Maximum file size is 1MB!"); }else { reader.onloadend = function() { preview.src = reader.result; }; if (file) { reader.readAsDataURL(file); } else { preview.src = ""; } } } function preview148DimensionsFile(input) { "use strict"; var preview = input.previousElementSibling; var file = input.files[0]; var reader = new FileReader(); if (file.type !== 'image/png') { alert("Accepted file is png."); return } var img = new Image(); img.src = window.URL.createObjectURL( file ); img.onload = function() { var width = this.naturalWidth, height = this.naturalHeight; if (height !== 148){ preview.src = ""; alert("Need to height is 148!"); return } if (width !== 148){ preview.src = ""; alert("Need to width is 148!"); return; } }; if(input.files[0].size > 1000000){ alert("Maximum file size is 1MB!"); }else { reader.onloadend = function() { preview.src = reader.result; }; if (file) { reader.readAsDataURL(file); } else { preview.src = ""; } } } function preview505540DimensionFile(input) { "use strict"; var preview = input.previousElementSibling; var file = input.files[0]; var reader = new FileReader(); if (file.type === 'image/png' || file.type === 'image/jpg' || file.type === 'image/jpeg') { var img = new Image(); img.src = window.URL.createObjectURL( file ); img.onload = function() { var width = this.naturalWidth, height = this.naturalHeight; if (width !== 505){ preview.src = ""; alert("Need to width is 505!"); return } if (height !== 540){ preview.src = ""; alert("Need to height is 540!"); return; } }; if(input.files[0].size > 1000000){ alert("Maximum file size is 1MB!"); }else { reader.onloadend = function() { preview.src = reader.result; }; if (file) { reader.readAsDataURL(file); } else { preview.src = ""; } } } else { alert("Accepted file is jpg/jpeg/png."); return } } function preview300343DimensionFile(input) { "use strict"; var preview = input.previousElementSibling; var file = input.files[0]; var reader = new FileReader(); if (file.type === 'image/png' || file.type === 'image/jpg' || file.type === 'image/jpeg') { var img = new Image(); img.src = window.URL.createObjectURL( file ); img.onload = function() { var width = this.naturalWidth, height = this.naturalHeight; if (width !== 300){ preview.src = ""; alert("Need to width is 300!"); return } if (height !== 343){ preview.src = ""; alert("Need to height is 343!"); return; } }; if(input.files[0].size > 1000000){ alert("Maximum file size is 1MB!"); }else { reader.onloadend = function() { preview.src = reader.result; }; if (file) { reader.readAsDataURL(file); } else { preview.src = ""; } } } else { alert("Accepted file is jpg/jpeg/png."); return } } function preview12041DimensionFile(input) { "use strict"; var preview = input.previousElementSibling; var file = input.files[0]; var reader = new FileReader(); if (file.type === 'image/png' || file.type === 'image/jpg' || file.type === 'image/jpeg') { var img = new Image(); img.src = window.URL.createObjectURL( file ); console.log(window.URL.createObjectURL( file )) img.onload = function() { var width = this.naturalWidth, height = this.naturalHeight; if (width !== 120){ alert("Need to width is 120!"); return } if (height !== 41){ preview.src = ""; alert("Need to height is 41!"); return; } }; if(input.files[0].size > 1000000){ alert("Maximum file size is 1MB!"); }else { reader.onloadend = function() { preview.src = reader.result; }; if (file) { reader.readAsDataURL(file); } else { preview.src = ""; } } } else { alert("Accepted file is jpg/jpeg/png."); return } }